|| List of recent Stuffing-related patents
| Polish rod locking clamp|
A pump drive head for a progressing cavity pump comprises a top mounted stuffing box rotatably disposed around a compliantly mounted standpipe with a self or manually adjusting pressurization system for the stuffing box. To prevent rotary and vertical motion of the polish rod while servicing the stuffing box, a polished rod lock-out clamp is provided with the pump drive head integral with or adjacent to a blow-out-preventer which can be integrated with the pump drive head to save space and cost.
|Techniques for forming interconnects in porous dielectric materials|
Techniques are disclosed for forming interconnects in porous dielectric materials. In accordance with some embodiments, the porosity of a host dielectric layer may be reduced temporarily by stuffing its pores with a sacrificial pore-stuffing material, such as titanium nitride (tin), titanium dioxide (tio2), or other suitable sacrificial material having a high etch selectivity compared to the metallization and dielectric material of the interconnect.
|Method for producing a large sized dumpling|
A method for producing a large size of dumpling is disclosed. The method comprises preparing a pre-stuff for producing dumpling by putting a bun stuffing into a skin; fermenting the pre-stuff in temperature of 30 to 50° c.
Dim Sum Food Co., Ltd.
|Method for stuffing food products in casings and stuffing machine for its execution|
A method for stuffing food products in casings comprising the steps that consist in inserting the product to be stuffed in a first casing, which is permeable to air, and in a second casing, which is impermeable to air and is arranged outside the first casing, creating an at least partial vacuum at least between the first casing and the second casing.. .
Inox Meccanica - S.r.l.
|Multi-rate transparent mux for optical communications networks|
Bit-transparent muxing of an input signal for transport through an optical communications network. A fixed length container of the optical communications network is defined, which includes an overhead and a payload.
Rpx Clearinghouse Llc
|Flexible stuffing box packing assembly|
A flexible stuffing box packing assembly has fifth rings which are placed within a stuffing box. The pressures are transferred along the sequence of the first, second, third, fourth and fifth rings.
A dumpling maker is provided with a dough container; two rotating rollers for compressing dough batch into a continuous dough sheet; dough pressing units for further pressing the continuous dough sheet; hand wheels each for adjusting a gap between the gauging rollers; a flour hopper for applying an amount of flour onto the continuous dough sheet; a brush member for rubbing the continuous dough sheet; a dough cutting unit for cutting the continuous dough sheet into respective dough sheets; a stuffing hopper; a mixer for uniformly mixing stuffing contained in the stuffing hopper; a stuffing feeding device for feeding an amount of the stuffing from the stuffing hopper onto each respective dough sheet; a dough mold for shaping the respective dough sheets into groove-shaped dough sheets; and two pressing rollers for pressing curved, upward bent portions of the groove-shaped dough sheets together to form dumplings.. .
Chi Chiao Frozen Foods Co., Ltd.
|Foldable garment toy and pillow|
A convertible apparatus comprises a foldable object and a hood attached to the foldable object. The foldable object is configured to be capable of folding and stuffing into the hood.
Hll Design, Inc.
|Brineless, low-acid packaged olives|
The invention relates to olive processing, and includes methods for producing low-acid olives, as well as the olives produced thereby. In one aspect, the invention provides compositions directed towards packaged olive preparations having novel and beneficial characteristics, for example, olive preparations that are free of packing liquids such as brine solutions.
Musco Olive Products, Inc.
|Device and generating postal items|
A method and a device for generating postal items with: a linearly formed first feed channel for feeding first documents of a postal item, with a first transport device, which transports the first documents in a first transport direction along a first straight transport line; an identification device for identifying the first documents; a second feed channel for feeding second documents of a postal item; an identification device for identifying the second documents; a collecting channel arranged downstream of the first feed channel and downstream of the second feed channel, for receiving first documents or groups of first documents from the first feed channel and/or of second documents or groups of second documents from the second feed channel, wherein the documents received in the collecting channel are collected as document group, wherein each document group forms the content of a postal item; and an envelope stuffing device arranged downstream of the collecting channel, in which the document groups coming from the collecting channel are inserted into an envelope. To achieve a higher throughput of postal items generated, the second transport device deflects the second documents, without stopping the documents, from a second transport direction along a second straight transport line into a third transport direction along a third straight transport line..
BÖwe Systec Gmbh
Therapeutic heart pad
Provided is a post-operative pillow garment for therapeutic use by patients recovering from chest or abdominal surgery, particularly heart surgery, and having two detachable members wherein the members include a front member and rear member. The front member and rear member can be attached to one another via adjustable shoulder and torso straps forming a vest-like garment, covering the front and back midsection region of the patient and extending from the cervical area to the navel.
Stuffing box isolation apparatus and methods of using
A stuffing box isolation apparatus and method for use with a stuffing box at a wellhead. The stuffing apparatus includes an anchor component that secures the apparatus within the stuffing box, when inserted into an open bore of a stuffing box.
Chevron U.s.a. Inc.
Pet toy containing a treat compartment
A hollow pet toy containing an interior compartment is described. The toy's interior compartment is accessed through an opening in the exterior fabric of the toy.
Apparatus for transmitting broadcast signals, receiving broadcast signals, transmitting broadcase signals and receiving broadcast signals
A method and an apparatus for transmitting broadcast signals thereof are disclosed. The method for transmitting broadcast signals includes processing input streams into bb frames in plps; encoding data of the plps; building at least one signal frame by mapping the encoded data of the plps; and modulating data in the built signal frame by ofdm method and transmitting the broadcast signals having the modulated data, wherein at least one of the bb frames includes a stuffing field and a first indicator describing whether the stuffing field is included in the bb frame..
Lg Electronics Inc.
Device of contrast of gastroesophageal reflux in children
The present invention concerns a device (10) to counteract gastroesophageal reflux in babies, including at least a flat rigid support (12), with a supporting side covered with stuffing or cushion (11), characterized in that it is supplied with mechanisms of assemblage (19) with a frame (30, 30′) supplied with wheels, the supporting side of said rigid support (12) taking an inclination of 70-90° compared to the horizontal and by the fact that includes also a sling (13) coupled with said rigid support (12) and fitted on said supporting side for placing and securing a baby (20) with his abdomen facing said cushion, in the space between said cushion (11) and said sling (13), said sling (13) including a back rest (15) inclined in the same direction of the rigid support (12) and whose upper extremity is higher than the upper extremity of said rigid support (12) and said cushion (11).. .
Dr Albani Limited
Device for feeding granulate and filler material to an extruder screw of an extruder
A device for feeding granulate and filler material to an extruder screw of an extruder, includes a cyclone with an inlet opening for introducing a delivery flow of pneumatically delivered filler material and an outlet opening for discharging the filler material which has been separated from the delivery flow, a feed funnel for the fresh granulate and a mixing section, to which the separated filler material and the fresh granulate are fed from the feed funnel. The cyclone is disposed at least partially in the feed funnel and coaxial with the latter, so that the outlet opening of the cyclone extends into a feed funnel outlet region which surrounds the outlet opening in an annular manner, wherein a stuffing screw passes axially through the outlet opening of the cyclone and protrudes at least partially into the mixing section which axially adjoins the outlet opening..
Bsw Machinery Handels-gmbh
Stuffing box leak containment apparatus
An apparatus for containing leaks from a stuffing box on a wellhead production assembly is provided. The apparatus comprises a containment vessel consisting of two half shells that are joined below the stuffing box.
Anti-pollution Technology, L.p.
Methods of self-forming barrier integration with pore stuffed ulk material
A process is provided for methods of reducing contamination of the self-forming barrier of an ultra-low k layer during semiconductor fabrication. In one aspect, a method includes: providing a cured ultra-low k film which contains at least one trench, and the pores of the film are filled with a pore-stuffing material; removing exposed pore-stuffing material at the surface of the trench to form exposed pores; and forming a self-forming barrier layer on the surface of the trench..
Methods for integration of pore stuffing material
A process is provided for methods of reducing damage to an ultra-low k layer during fabrication. In one aspect, a method includes: providing a cured ultra-low k film containing pores filled with a pore-stuffing material; and modifying an exposed surface of the ultra-low k film to provide a modified layer in the ultra-low k film.
Boot saver system
A base assembly includes two vertical lower segments, one vertical upper segment, and an intermediate segment there between. A cover has linear leg sections covering the lower segments, a head section covering the upper segment, and a shoulder section covering the intermediate segment.
Rotary piston pump
A rotary piston pump with at least two double- or multi-lobe rotary pistons rotating in opposite directions, the drive shafts whereof include seals, wherein the seals are constituted as slip ring seals or lip seals or stuffing-box seals, which in each case are disposed on the shaft shoulder belonging to the respective rotary piston, and one slip ring per seal is provided with a locking device, which includes a large number of fixing positions. The seals are pushed onto a tubular shoulder of the rotary piston, the rotary piston is introduced into the pump housing, the securing element is connected to the slip ring seal in a form-fit manner by rotation of the rotary piston and the shaft shoulder is then rigidly connected to the drive shaft..
Envelope-stuffing machine for stuffing piles of articles in sheet form
A stuffing machine (1) for stuffing piles (2) of sheet articles, comprising: a first conveyor (11) for moving piles (2) of sheet articles in a first advancement direction (a1); a second conveyor (12) arranged downstream of the first conveyor (11) with respect to the first advancement direction (a1), which second conveyor (12) is angularly arranged with respect to the first conveyor (11); a third conveyor (13) arranged downstream of the first conveyor (11) with respect to the first advancement direction (a1), which third conveyor (13) is aligned with the first conveyor (11), is extensible in a second advancement direction (a2) opposite the first advancement direction (a1), such as to assume an operating configuration (o) in which it passes over the second conveyor (12) and defines, with the first conveyor (11), a first conveying pathway (p1) and is retractable in a same direction as the first advancing direction (a1) in order to assume an inactive configuration (i) which enables the first conveyor (11) and the second conveyor (12) to define a second conveying pathway (p2); a first stuffing unit (3) positionable along the first conveying pathway (p1) for stuffing the piles (2) of sheet articles; a second stuffing unit (4) positionable along the second conveying pathway (p2) for stuffing the piles (2) of sheet articles.. .
Filled amorphous bag positioning screened devices and the use thereof
A filled amorphous bag apparatus, similar to a “bean bag”, comprises at least one amorphous bag, a malleable filling within the amorphous bag, and at least one first connector on or within the amorphous bag. The malleable filling may include, but not be limited to, a plurality of pellets (e.g.
A stuffing apparatus includes a main body case, a stuffing nozzle for discharging a material, a material feed pump for feeding the material into the stuffing nozzle, a pump drive motor for driving the material feed pump, and a conveying device for conveying a stuffed casing in a direction in which the material discharged is discharged, wherein a hopper into which the material is charged from above is provided above the material feed pump, the material feed pump, the pump drive motor, and the hopper are provided on the main body case on which the stuffing nozzle and the conveying device are provided, and the material which is fed from the material feed pump is automatically stuffed by being fed into the stuffing nozzle via a material feed pipe.. .
Method and microwave treatment of dielectric films
A method for processing a dielectric film on a substrate comprises: depositing a porous dielectric film on a substrate; removing the porogen; stuffing the film with a protective polymeric material; performing at least one intermediate processing step on the stuffed dielectric film; placing the film in a microwave applicator cavity and heating to a first temperature to partially burn out the polymeric material; introducing a controlled amount of a polar solvent into the porosity created by the partial burn out; applying microwave energy to heat the film to a second selected temperature below the boiling point of the solvent to clean away remaining polymeric material; and applying microwave energy to heat the film to a third temperature above the boiling point of the solvent to completely burnout the residues of polymeric material. The interaction of the polar solvent with the microwaves enhances the efficiency of the cleaning process..
Method and smoothing jitter generated by byte stuffing
Systems and methods for smoothing jitter generated by byte stuffing. A frequency synthesizer comprises a smoothing logic coupled with a pll.
Stuffed, flavored and packaged olives
The invention relates to olive processing, and includes methods for producing olives, as well as the olives produced thereby. In one aspect, the invention provides compositions directed towards packaged olive preparations having novel and beneficial characteristics, for example, olive preparations that are free of packing liquids such as brine solutions.
System and constructing huggable fabric arms
This disclosure relates to a system and method for constructing huggable fabric arms. Specifically, the huggable fabric arms can comprise a pair of hands comprising a left hand and a right hand, wherein said pair of hands comprises a set of open fingers.
Mechanical engine driven water pump
A mechanical engine driven water pump is disclosed for converting energy from an input heat source to a reciprocating mechanical output for powering the water pump. The mechanical reciprocating engine comprises an engine bore having an input port and an output port.
Apparatus for changing an advancement direction of piles of inserts to be stuffed in envelopes
An apparatus for changing, in an envelope stuffing machine, an initial advancement direction of piles made up of inserts to be put in envelopes comprises at least a thrust device for pushing a pile in a thrust direction perpendicular or oblique with respect to an initial advancement direction, and at least a connecting device comprising drawing means for transporting piles along a transport pathway at a terminal end of which there is an outlet of the connecting device, the drawing means receiving piles which are supplied in initial advancement direction, the drawing means being curved so that the transport pathway comprises at least an arced tract with a center of curvature on a main axis perpendicular to the initial advancement direction, whereby, upon crossing the arced tract, the piles exhibit an intermediate advancement direction oblique or transverse to the initial advancement direction; the thrust device being downstream of the connecting device so as to receive piles which exit from the connecting device.. .
Device and method to simulate cooking stuffing in a bird
The present invention provides a device and method for simulating cooking stuffing in a bird, such as a turkey. Stuffing prepared with the device and method of the invention has both the appearance and taste of cooked-in-the-bird stuffing.
Low latency multiplexing for optical transport networks
Techniques for multiplexing and demultiplexing signals for optical transport networks are presented. A network component comprises a multiplexer component that multiplexes a plurality of signals having a first signal format to produce a multiplexed signal in accordance with a second signal format, while maintaining error correction code (ecc) of such signals and without decoding such signals and associated ecc.
Dynamic buffer for a continuous envelope stuffing system
A dynamic buffer suitable for supplying piles from a cutting station to a continuous stuffing system has two storage levels, upper and lower, each having parking cells arranged in series for receiving, retaining and dispensing the piles. Each cell comprises two consecutive roller-counter-roller pairs, spaced by a distance smaller than a longitudinal extension of the piles, motorized in synchrony, suitable for adheringly gripping and drawing a pile; sensor means designed to detect whether each parking cell is free or occupied by a pile.
Animal and human related products and methods of manufacturing such
A stuffed article, for example a toy, flying disk, bed, or etc., and manufacturing methods of such are disclosed which has volume and which upon destruction by an animal will not release stuffing as with most common stuffed toys, flying disks, or beds. The article is made from at least one material such as fabric, canvas, denim, nylon, fleece, rubber, plastic, leather, rawhide, animal parts, fiber (or other pliable material) which, through the article's configuration and manufacturing process is filled with the same type of material used to form the outer layers, multiple layers may be used for increased strength, and specifically the inner cavity contains material which is one and the same type of material as the outer layer(s)..
Device for filling a thin-walled transport container with notes of value
A device (10) for filling a thin-walled transport container (18) made of flexible material with notes of value is described. For this, the device (10) comprises a supply unit (12), a stacking unit (14) and a receiving unit (16) for receiving the thin-walled transport container (18).
Corrosion resistant emi shielding assembly for a stuffing tube and a making a gasket for use therewith
An elongated, flexible composite gasket member having a knitted wire mesh rope at least partly impregnated with a soft, tacky, flowable, pre-cured polyurethane gel for use in a stuffing tube assembly. The stuffing tube assembly is used in a deck or bulkhead of a ship.
Stuffing tube centering device and centering a stuffing tube
A stuffing tube centering device for concentric alignment of the stuffing tube to a casing stick and a corresponding method, and where two oppositely disposed centering members movable towards each other between which the stuffing tube can be held and centered.. .
A wireline apparatus comprises a sheave for accommodating a wireline and a sheave mounting configured for coupling to a wireline stuffing box. The apparatus includes a sensor for measuring at least one of wireline tension and deployed wireline length at the sheave..
Pump deployment via cable
A method can include providing a pump connected to a power cable with a smooth surface; providing a stuffing box with a valve configured to form a seal with the smooth surface of the power cable in a closed state and to form a passage for the pump as connected to the power cable in an open state; providing a lubricator; providing a blow-out protector with a valve configured to form a seal with the smooth surface of the power cable in a closed state and to form a passage for the pump as connected to the power cable in an open state; and controlling the states of the valves while lowering the pump via the power cable through the stuffing box, the lubricator, and the blow-out protector to position the pump into a bore of a well. Various other apparatuses, systems, methods, etc., are also disclosed..
Piston assembly transportation and installation apparatus and methods of transporting and installing a piston assembly therewith
A piston assembly transportation and assembly apparatus and methods of transporting and installing a piston assembly therewith are provided. The apparatus maintains a piston assembly in its assembled state during transportation without allowing damage and contamination to the piston assembly.
Two-dimensional run-length limited codec with protection words and using same
The invention provides a two-dimensional run-length limited (rll) (1,3) code method and apparatus. The codec comprises an encoder and a decoder comprising a data buffer and grouping module, a two-dimensional code word generating module, a two-dimensional word unit page constructing module, a two-dimensional code word write array module, and a protection word stuffing module.
Method and device for tapping and tracing a conduit
Disclosed are a method and a device for tapping and tracing a conduit that is obstructed from view such as a subterranean pipe. The invention allows the conduit to be traced while the conduit continues to function.
Pillow having a plurality of polygonal units
A pillow having a plurality of polygonal units, includes: a triangular pentahedron unit having a shape of a triangular prism; a one-side inclined square hexahedral unit having a shape of a square pillar; a rectangular hexahedron unit having a shape of a rectangular pillar; a both-side inclined rectangular hexahedron unit having a shape of a rectangular pillar; a rhombic hexahedron unit having a shape of a rhombic pillar; an isosceles-triangular pentahedron unit having a shape of an isosceles triangular prism; and a rectangular panel-shaped hexahedron unit having a shape of a rectangular pillar, whereby the units are sewn together in such a way so as to selectively come into surface contact with each other or be stacked, thus forming one pillow, with the respective units being filled with stuffing.. .
Device and method to simulate cooking stuffing in a bird
The present invention provides a device and method for simulating cooking stuffing in a bird, such as a turkey. Stuffing prepared with the device and method of the invention has both the appearance and taste of cooked-in-the-bird stuffing.
An improved system for stuffing material is described. The clipping system includes a first clipper comprising a clip reel, a clip rail, a punch, and a die, the punch configured to engage a single clip and the die having a set of two depressions configured to engage and bend a pair of legs of the single clip, and further includes a second clipper mounted adjacent the first clipper, the second clipper comprising a second clip reel, a second clip rail, a second punch, and a second die, the second punch configured to engage a pair of clips and the second die having two sets of two depressions configured to engage and bend the legs of the pair of clips..
Inner tube with film
The present invention discloses a type of secure and efficient wheel assembly using fluid or solid stuffing materials so as to minimize the blowout risks, a wheel rim transmission assembly, an energy exchanging arrangement used in transporting system, and a vehicle energy storage system, as well as corresponding methods for manufacturing and preparing such assemblies and arrangements in applications.. .
Novelty furniture and novelty furniture coverings featuring decorative appendages
A novelty furniture covering is provided for use with children's furniture. The device comprises a covering having an elongated body section that is adapted to conform to a given style of furniture.
Environmental friendly method to produce artificial rocks and other items with recycled materials
A method to produce artificial rock which includes the following steps: (1) lay down a piece of plastic film as a working surface. Prepare a mold with plastic bags, used bottles, containers and papers.
Packing assembly for a pump
A header ring for use in a stuffing box comprising an annular body portion of an elastomeric material, an annular radially inward projecting sealing lip portion formed on said body portion and an annular, axially facing pedestal portion formed on said body portion, said pedestal portion defining an annularly extending radially inwardly facing pedestal surface, the sealing lip portion defining an annularly extending, radially inward facing sealing surface, the sealing surface and the pedestal surface forming a juncture, at least a portion of the pedestal portion adjacent the juncture and forming the pedestal surface and at least a portion of the sealing lip portion adjacent the juncture and forming a portion of the sealing surface being comprised of a layer of reinforced elastomeric material bonded to the body portion.. .
A geotextile container has a bag section, a cover section and a stuffing space. The bag section has a bag cloth, a bag non-woven fabric and a trapezoidal longitudinal section.
Dispensing bath toy
A dispensing bath toy provides a refillable dispensing container within a plush toy. An outer cloth shell in the form of a living thing and has an interior portion enclosing a liquid-wicking stuffing.
Low diffusivity barrier fluid packing system
In accordance with the present invention, there is provided a fluid or liquid barrier packing system which is adapted to minimize voc emissions, while also providing live-loading and continuous load monitoring functions. The components of the packing system (including the liquid barrier) are adapted to be installed in a traditional stuffing box of a valve utilizing a top entry method, and without the necessity of having to inject the liquid through any side ports of the valve.
Method for correcting messages containing bit stuffing
The invention relates to a method for correcting a message the generation of which involves transforming an initial message and inserting bit stuffing into the transformed message, which method comprises providing an observation sequence containing the message to be corrected. A number of path hypotheses are generated via a trellis diagram associated with the transformation.
A bagging assembly for bagging bales of fibrous material is disclosed. The bagging assembly incorporates a chute defining a channel for receiving a bale, which is pushed there between by a stuffing assembly.
Apparatuses and methods for bitstream bitstuffing
Examples of methods and apparatuses for inserting and removing stuffing data in a bitstream described. An encoding system may include an encoder configured to receive a video signal and stuffing data.
Decoding method and decoder
The method according to the invention relates to the decoding of a sequence of symbols, the sequence of symbols having been generated by: calculating a crc value for an initial message; combining the initial message and the crc value so as to produce a transformed message; and, encoding the transformed message. The decoding comprises: generating a number of path hypotheses via a trellis diagram corresponding to the trellis diagram of a finite-state machine comprising the encoder and the crc generator, in which the encoder and the crc generator are supplied with the same input.
Convertible stuffed toy
A stuffed toy 11 convertible to another stuffed toy, or a cushion 13. The stuffed toy 11 has a first shape formed by a first shell 35 and a second shape formed by a second shell 41, the shells being joined by a zip fastener 47 to form a contiguous hollow structure when unzipped.
Feeding and cutting structure of stuffing machine
A feeding and cutting structure of stuffing machine includes a hopper assembly and a transmission device. The hopper assembly includes a base having a top to which a plurality of inclined feeding tubes is mounted and a plurality of funnel-like feeding hoppers.
Printed circuit board and manufacturing printed circuit board
A printed circuit board includes an inner substrate, a stuffing layer, an adhesive layer and a plurality of second copper trace layer. The inner substrate includes an insulating layer and an copper trace layer formed on a surface of the insulating layer.
Envelopes and methods for their production
An envelope is formed from continuous copp film web by precreasing envelope body (13) and flap (14) fold lines along the web, continuously installing an adhesive tape along the flap portions and pre-cutting relief slots in the web corresponding to the flap side edges (15). The pre-creased web is folded and cut into individual envelopes by hot knife cutting, whereby the presence of the slots prevents the flaps from welding to the side seams even with the flap folded over.
A stuffing box for a wellhead, the stuffing box comprising: a stationary housing defining a passage for receiving a well tubular; a tubular shaft mounted on the stationary housing for rotation within the passage and defining an inner axial bore adapted to form a static seal around a well tubular in use; and a dynamic pressure seal mounted within an annular cavity defined by respective cylindrical surfaces of the stationary housing and tubular shaft, in which one or both of the respective cylindrical surfaces are tapered to decrease the radial cross sectional area of a seal travel portion of the annular cavity in an axial direction downstream from a well end of the stuffing box.. .
Method and injecting packing into stuffing boxes for reciprocating rods
A stuffing box for a polished rod used with a downhole pump uses injectable packing to provide a seal around the polished rod. The stuffing box has a chamber for receiving the packing.
Stuffing box cooling system
A system for cooling packing material utilized for sealing a shaft moving therethrough is described. The packing material held in place by at least one packing cup, wherein a coolant is directed axially through a significant volume of each packing cup close to the packing material.
Stuffing box flow diverter and methods therefor
A stuffing box flow diverter including a body including first, second, and third connector portions. The third connector portion is configured for connection to a stuffing box.
This stuffed article (1) of the present invention is made of ticking (2a, 2b) filled with a stuffing. The stuffing is a long-fiber wad (8) formed by integrating an effect yarn with a core yarn.
Self-aligning and leak monitoring stuffing box
Disclosed is an improved stuffing box that is adapted to articulate within a housing body to accommodate a polished rod misalignment, maintain compression of a graphite stuffing material, prevent cross contamination of debris through the stuffing box interior and provide a means to monitor for fluid leaks. The device comprises a housing having an internally supported stuffing box, where the stuffing box is supported along an angular seat within the housing that allows reorientation of the box as the polished rod passes therethrough.
Disclosed is an optical head, including a hollow micro-pipe and a stuffing member, the micro-pipe having a diameter-extended portion and a diameter-diminishing portion adapted allowing the incident light to transmit from the diameter-extended portion to the diameter-diminishing portion to emerge from its tip, and the stuffing member being disposed inside of the micro-pipe compared to prior techniques. The optical head of the invention is easier to be made, and it has a better focus for achieving optical exposure of sub-wave length focal spot and deep depth of focus..