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Stiffness patents

      

This page is updated frequently with new Stiffness-related patent applications.




 High speed actuator including active stiffness controller and  driving the same patent thumbnailnew patent High speed actuator including active stiffness controller and driving the same
Disclosed is a high speed actuator. The high speed actuator includes an actuation part configured to cause deformation such as bending or twisting and an active stiffness controller on a surface of the actuation part or in the actuation part configured to control in real time a stiffness (e.g., of the actuator) according to an external signal.
Snu R&db Foundation


 Mems device mechanical amplitude control patent thumbnailnew patent Mems device mechanical amplitude control
A system and/or method for utilizing mechanical motion limiters to control proof mass amplitude in mems devices (e.g., mems devices having resonant mems structures, for example various implementations of gyroscopes, magnetometers, accelerometers, etc.). As a non-limiting example, amplitude control for a mems gyroscope proof mass may be accomplished during normal (e.g., steady state) gyroscope operation utilizing impact stops (e.g., bump stops) of various designs.
Invensense, Inc.


 Hingeless, large-throw negative stiffness structure patent thumbnailnew patent Hingeless, large-throw negative stiffness structure
A negative stiffness structure for vibration isolation, shock mitigation, and/or signal processing includes a flexible tensile member and a curved compressive member. A first end of the tensile member is attached to a first structure.
Hrl Laboratories, Llc


 Permanent magnet motor pump patent thumbnailnew patent Permanent magnet motor pump
A structural improvement of the canned pump is to improve the stiffness of a stationary shaft and, according to requirement, to dispose a monitor device. The method for improving the stiffness of the stationary shaft includes axially inserting a shaft metal rear support of the metal structural of a motor rear casing of a canned motor into the inner side of a rotor yoke of an inner rotor of the canned motor, tightly attaching the shaft metal rear support to a rear shaft seat for improving the stiffness of the stationary shaft by longer hold length, and for shortening an arm length of the composite force.
Assoma Inc.


 Permanent magnet motor pump patent thumbnailnew patent Permanent magnet motor pump
A structural improvement of the canned pump is to improve the stiffness of a stationary shaft and, according to requirement, to dispose a monitor device. The method for improving the stiffness of the stationary shaft includes axially inserting a shaft metal rear support of the metal structural of a motor rear casing of a canned motor into the inner side of a rotor yoke of an inner rotor of the canned motor, tightly attaching the shaft metal rear support to a rear shaft seat for improving the stiffness of the stationary shaft by longer hold length, and for shortening an arm length of the composite force.
Assoma Inc.


 Support device with controlled stiffness patent thumbnailnew patent Support device with controlled stiffness
The invention concerns the field of support devices for equipping various types of structures. More particularly, the invention concerns a support device (100) comprising a plurality of force transmission parts (1, 2a, 2b) in mutual contact so as to transmit forces directed substantially in a predefined direction (d).
Soletanche Freyssinet


 Producing polyolefin products with improved stiffness, toughness, and processability patent thumbnailnew patent Producing polyolefin products with improved stiffness, toughness, and processability
Polymers, and systems and methods for making and using the same are described herein. A polymer includes ethylene and at least one alpha olefin having from 4 to 20 carbon atoms.
Univation Technologies, Llc


 Producing polyolefin products with improved stiffness, toughness, and processability patent thumbnailnew patent Producing polyolefin products with improved stiffness, toughness, and processability
Polymers, and systems and methods for making and using the same are described herein. A polymer includes ethylene and at least one alpha olefin having from 4 to 20 carbon atoms.
Univation Technologies, Llc


 Motor vehicle having structurally integrated battery elements patent thumbnailnew patent Motor vehicle having structurally integrated battery elements
A motor vehicle includes several battery elements placed in modules of a first type and modules of a second type. The battery elements in each module of first type are grouped together in an assembly such that the battery elements can shift when exposed to a force, while the assembly is deformable.
Audi Ag


 Method and  active dynamic trimming of suspension damping including negative stiffness patent thumbnailnew patent Method and active dynamic trimming of suspension damping including negative stiffness
A suspension assembly between a sprung element and an unsprung element includes a load-carrying spring and a negative stiffness element between the sprung element and the unsprung element. The load-carrying spring element is configured with a positive spring rate to support a static load of the sprung element.
Gm Global Technology Operations Llc


new patent

Multi-vector traction device for the lumbar spine

Some embodiments of the present disclosure include a traction device for relieving lower back pain and stiffness and reducing lumbar spine intervertebral disc displacement. The device may include a sliding spine assembly attached to a head rest pad, a torso pad, and a hip pad, an adjustable length vector bar extending outwardly from the spine assembly, wherein the vector bar is rotatably attached to the sliding spine assembly such that the vector bar is configured to move in a plurality of vectors, a cross bar foot brace tube attached to the vector bar; a foot rest positioned on the foot brace tube, a belt positioned proximate to the torso pad, and a strap assembly attached to the foot brace tube or the distal end of the vector bar, the strap assembly configured to attach to the belt and apply traction to a user's back..

new patent

Bendable catheter arms having varied flexibility

In various embodiments, a catheter comprising an expandable electrode assembly or basket is provided. In specific embodiments, the basket is particularly useful for mapping electrical activity at one or more locations within the heart.
St. Jude Medical, Atrial Fibrillation Division, Inc.

new patent

Elongate medical device including chamfered ring electrode and variable shaft

An elongate medical device shaft may comprise an elongate body and an annular electrode disposed on the elongate body. The annular electrode may define a longitudinal axis and have an outer diameter.
St. Jude Medical, Cardiology Division, Inc.

new patent

Steerable medical devices, systems, and methods of use

Steerable medical devices and methods of use. In some embodiments, the steerable medical devices include a steerable portion with a stiffness that varies along the length of the steerable portion..

Variable stiffness compression apparatus, systems and methods of using the same

The present invention comprises an apparatus for use in line with a chain or a strap tie-down assembly. When the chain or strap tie-down assembly is tightened on a commodity to prevent movement of the same during shipping, the apparatus compresses and stretches.
Holland Lp

Airless tire construction having multiple layers

A tire includes a wheel portion having an axis of rotation and an annular outer surface. The tire further includes a webbing extending from an annular inner surface of the wheel portion towards the axis of rotation.
Bridgestone Americas Tire Operations, Llc

Sheet transport system

A sheet transport system comprising an endless carrier belt that has a predetermined stiffness and is arranged to carry the sheets towards an end of a conveyer path where the sheet is separated from the carrier belt by passing this belt around a separating member that has a predetermined curvature, wherein the carrier belt runs in parallel with an endless conveyer that has a larger stiffness than the carrier belt and, at the end of the conveyer path, has a smaller curvature than the separating member.. .
Oce-technologies B.v.

Film structures for use in recylcable packaging

A recyclable food package, such as stand up pouch (sup) is prepared using a polyethylene structure having a first web and a second web. Each of the first web and second web contains at least one layer of high density polyethylene (hdpe) to provide stiffness.
Nova Chemicals (international) S.a.

Board testing apparatus

A board testing apparatus and method and in particular a testing apparatus for testing a board made of a corrugated material, such as corrugated cardboard, for failure characteristics. The method comprises taking a corrugated board from a corrugator or converter, locating at least a part of the board into a testing machine, performing a non-destructive compression test on a sample region of the part of the board within the machine and providing a compression test characteristic reading of that region of the board, comparing that characteristic reading against a predefined acceptable compression test characteristic reading that design of corrugated board should have and concluding from the comparison as to whether the board, or that sample region of the board, meets a required compression stiffness parameter..
Ds Smith Packaging Ltd

Fiber winding system for composite projectile barrel structure

A composite projectile barrel is disclosed comprising a continuous fiber composite outer shell whose average effective coefficient of thermal expansion in the longitudinal direction approximately matches that of an inner liner. In one embodiment, the composite barrel comprises pan precursor carbon fiber and a thermoset epoxy resin, with the carbon fiber wound at varying winding angles to form a plurality of regions within the outer shell.
Proof Research, Inc.

Wind turbine blade

A wind turbine blade which is at least 45m long. The blade has a main axis in the lengthwise direction from root to tip and an aerodynamic shell surrounding a spar which extends in a lengthwise direction along a substantial proportion of the blade at least a portion of the half of the shell closest to the tip.
Blade Dynamics Limited

Single polymer film structures for use in stand-up-pouches

The present invention relates to film structure suitable for use in stand up pouches comprising all polyethylene material. The film structure can be a monolayer film or a multilayer film structure having specific requirements for each layer.

Variable stiffness guidewire

This invention includes a highly torqueable, pushable guidewire with a relatively stiff proximal (preferably in one embodiment), stainless steel (ss) section and kink resistant nitinol medial to distal section attached to a shapeable ss, in one embodiment, (such as a ss ribbon) distal tip. The very distal ss tip will have the ability to be shaped by the end user in order to facilitate entry into the chosen vessels..
Lake Region Manufacturing, Inc.

Steerable laser probe

A steerable laser probe may include a handle, an actuation structure of the handle, a housing tube, a wire having a pre-formed curve, and an optic fiber disposed within the housing tube and an inner bore of the handle. The housing tube may include a first housing tube portion having a first stiffness and a second housing tube portion having a second stiffness.
Katalyst Surgical, Llc

Variable stiffness devices and methods of use

Variable stiffness devices and methods of their use are provided. In some embodiments, a variable stiffness device comprises an inner member defining a compartment for receiving an actuating fluid; an outer member disposed around the inner member; and a granular medium disposed between the inner member and the outer member; wherein the inner member is being moveable in a radial direction from a relaxed state to an expanded state by introducing the actuating fluid into the compartment of the inner member to compress the granular medium against the outer member to increase the stiffness of the device..
Worcester Polytechnic Institute

Temporarily stiffened mesh prostheses

The present invention relates to medical prostheses and methods of manufacturing those devices. In particular, the prostheses are temporarily stiffened meshes with particular coatings to provide initial stiffness and thereby permit easier surgical handling for treatment or reconstruction of soft tissue defects.
Tyrx, Inc.

Instrument panel frame assembly and methods of use and manufacture thereof

Some embodiments are directed to a frame assembly that includes a supplemental beam portion, and a main beam portion adjacent the supplemental beam portion. The main beam portion includes a central portion as well as left and right portions disposed at opposing sides of the central portion.
Honda Motor Co., Ltd.

Molded foam push-to-fit earplug, s

A push-to-fit type earplug (100) including a sound attenuating portion (113) and a semi-rigid stem portion (114) having a relatively greater stiffness than the sound attenuating portion is disclosed. The sound attenuating portion and stem portion are made of a closed-cell, slow-recovery foam..
3m Innovative Properties Company

Anti-aspiration prosthesis

A prosthesis and a method of manufacturing the prosthesis for controlling flow through a bodily lumen are provided. The prosthesis includes a body having a proximal portion, a distal portion and a lumen extending therethrough.
Cook Medical Technologies Llc

Motion analysis apparatus, analyzing motion, and motion analysis program

In order to estimate a movement command that a central nervous system is to select to implement a desired movement based on three feature amounts under the concepts of an antagonistic muscle ratio and an antagonistic muscle sum and based on a musculoskeletal model, a movement analysis apparatus includes: a myoelectric potential measurement unit to measure a myoelectric potential of a person who performs a movement; a movement measurement unit to measure a body movement; and a stiffness-ellipse calculation unit, an equilibrium-point calculation unit and a muscle synergy calculation unit to calculate, from measurement information obtained at the measurement units, feature amounts of a stiffness ellipse, an equilibrium point, and a muscle synergy that are base vectors describing the equilibrium point at an operating point based on a musculoskeletal model.. .
Osaka University

Drive mechanism

When an actuator using a conventional piezoelectric element is used as a general-purpose mechanical component, such as a linear actuator and an electric cylinder, the absence or weak constraint of a guide in the moving direction causes the problem that the moving direction of a moving member is changed or the moving member is rotated due to a change in the posture of the moving member by an external force. A restraint member presses a rectangular parallelepiped-shaped output shaft, which has high stiffness, thermal conductivity, and lubricity and to which a piezoelectric element is attached at one end, against a guide member so as to limit the degree of freedom to one degree, in order to realize a linear actuator, an electric cylinder, and a force generation device that can be used for general purposes and have a high straight movement property.
Microb Co., Ltd.

Sliding frame

A band or frame for wearing on a person's head, as for example eyewear, is provided with a frame that has an inner frame member that is slidable relative to an outer frame element for stiffness or sizing adjustment of the band.. .
Google Inc.

Vibratory flowmeter and methods and diagnostics for meter verification

A vibratory flowmeter (5) for meter verification is provided, including meter electronics (20) coupled to the first and second pickoff sensors (170l, 170r) and coupled to a driver (180), with the meter electronics (20) configured to: vibrate the flowmeter assembly (10) in a single mode using the driver (180), determine a single mode current (230) of the driver (180) and determine first and second response voltages (231) generated by the first and second pickoff sensors (170l, 170r), respectively, compute frequency response functions for the determined first and second response voltages (231) from the determined single mode current (230), fit the generated frequency response functions to a pole-residue model, and verify proper operation of the vibratory flowmeter (5) using the meter stiffness value (216), residual flexibility (218), and the meter mass (240) in embodiments.. .
Micro Motion, Inc.

Fiber winding system for composite projectile barrel structure

A composite projectile barrel is disclosed comprising a continuous fiber composite outer shell whose average effective coefficient of thermal expansion in the longitudinal direction approximately matches that of an inner liner. In one embodiment, the composite barrel comprises pan precursor carbon fiber and a thermoset epoxy resin, with the carbon fiber wound at varying winding angles to form a plurality of regions within the outer shell.
Proof Research, Inc.

Flexible support structure for a geared architecture gas turbine engine

A geared architecture for a gas turbine engine includes a fan shaft and a frame which supports said fan shaft. The frame defines a frame stiffness.
United Technologies Corporation

A power tool for tightening a fastener and a method

A power tool for tightening a fastener includes: an angle measurement unit for measuring a rotational angle (α) of the fastener; a torque measurement unit for measuring a torque (t) delivered to the fastener during tightening; a motor connected to rotatable parts of the power tool for driving the tightening of the fastener; a processor for calculating a tightening energy (et) needed to complete tightening of the fastener from α to a predetermined target angle (αt), wherein et is calculated based on α, αt and a stiffness (k) of a joint; and a regulator to regulate a rotational speed (ω) of the motor to provide rotational energy (er) in the form of rotational inertia in the rotatable parts of the power tool to meet the needed et, wherein the power tool interrupts the tightening of the fastener at αtt, αt defined from snug, at a snug angle (α0).. .
Atlas Copco Industrial Technique Ab

Ultrasonic device, ultrasonic probe, electronic equipment, and ultrasonic imaging apparatus

An ultrasonic device includes: an ultrasonic element array substrate having a plurality of ultrasonic elements that each include a piezoelectric body; an acoustic lens secured via an acoustic matching layer to a surface, formed with the ultrasonic elements, of the ultrasonic element array substrate; and a support member secured to a surface, opposite to the surface formed with the ultrasonic elements, of the ultrasonic element array substrate, wherein the support member is formed to have a larger area, in plan view in the thickness direction of the ultrasonic element array substrate, and a higher bending stiffness than the ultrasonic element array substrate, and the acoustic lens is formed to have a lower bending stiffness than the ultrasonic element array substrate. The above-described ultrasonic device further includes an acoustic matching layer filled between the ultrasonic element array substrate and the acoustic lens..
Seiko Epson Corporation

Deflectable catheter bodies with corrugated tubular structures

A guidable, or steerable, or deflectable catheter is provided that includes a proximal portion and a distal portion for insertion into a body cavity. A selectively deflectable segment having an anisotropic bending stiffness for deflection in individual planes is incorporated into the distal portion of the catheter shaft.
St. Jude Medical, Cardiology Division, Inc.

Variable stiffness cannulae and associated delivery systems and methods

The disclosure relates to cannulae, delivery systems, methods of making cannulae, and methods of making delivery systems. A cannula comprises an elongate tubular member having a circumferential wall extending between a proximal end and a distal end and defining an interior lumen.
Cook Medical Technologies Llc

Expandable vascular occlusion device with lead framing coil

An occlusion device for treating an aneurysm can have an inner embolic device with a proximal section and a distal section. The distal section has a first stiffness and the proximal section has a second stiffness.
Depuy Synthes Products, Inc.

Variable thickness diaphragm for a wideband robust piezoelectric micromachined ultrasonic transducer (pmut)

A diaphragm for a piezoelectric micromachined ultrasonic transducer (pmut) is presented having resonance frequency and bandwidth characteristics which are decoupled from one another into independent variables. Portions of at least the piezoelectric material layer and backside electrode layer are removed in a selected pattern to form structures, such as ribs, in the diaphragm which retains stiffness while reducing overall mass.
The Regents Of The University Of California

Electronic device package, electronic device structure and fabricating electronic device package

According to embodiments of the disclosure, an electronic device package may include a wire layer and a rigid element. The wire layer includes a first surface and a second surface opposite to each other, and the second surface of the wire layer has at least one coarse structure.
Industrial Technology Research Institute

Collection, release, and detection of analytes with polymer composite sampling materials

A unique fiber core sampler composition, related systems, and techniques for designing, making, and using the same are described. The sampler is used to interface with existing field instrumentation, such as ion mobility spectrometer (ims) equipment.
Battelle Memorial Institute

Increased stiffness center optic in soft contact lenses for astigmatism correction

A molded contact lens comprising a stiffer optic zone relative to the peripheral zone of the contact lens provides an optical element for correcting astigmatism without the need for or substantially minimizing the need for the correction of rotational misalignment. The higher elastic modulus optic zone vaults over the cornea thereby allowing a tear lens to form.
Johnson & Johnson Vision Care, Inc.

Collection, release, and detection of analytes with polymer composite sampling materials

A unique fiber core sampler composition, related systems, and techniques for designing, making, and using the same are described. The sampler is used to interface with existing field instrumentation, such as ion mobility spectrometer (ims) equipment.
Battelle Memorial Institute

Vibration-harvesting, variable-stiffness system and method

A system for modifying a stiffness of a structure of a vehicle using vibrational energy of the vehicle includes a variable-stiffness layer, having a selectively controllable young's modulus, attached to the structure, and a conversion layer, coupled to the variable-stiffness layer, the conversion layer configured to convert vibrational energy from the structure into electrical energy, and to supply the electrical energy to the variable-stiffness layer to adjust a stiffness of the variable-stiffness layer.. .
The Boeing Company

Lightweight internal cobustion engine with a ferrous reinforced cylinder block

An internal combustion engine includes a cylinder block made of a first material having a plurality of cylinders and an insert made of a second material having a greater stiffness and a lower thermal coefficient of expansion than the first material and casted-in-place into the cylinder block. For each cylinder of the cylinder block, the insert includes a bolted anchor having a first threaded bore suitable to be engaged by an head bolt for fixing a cylinder head to the cylinder block, and a second threaded bore suitable to be engaged by a cap bolt for fixing a main bearing cap to the cylinder block, and a lubrication gallery connected to a plurality of the anchors..
Gm Global Technology Operations Llc

Viscoelastic medical article

A medical article and methods of using same. The medical article can include a machine direction (md) and a cross-machine direction (cmd); a support layer; and a viscoelastic layer.
3m Innovative Properties Company

Stents having radiopaque mesh

A stent including a mesh made of strands. The mesh has at least one radiopaque strand and at least one non-radiopaque strand, and the at least one radiopaque strand and the at least one non-radiopaque strand each have different diameters.
Covidien Lp

Tapered flex plate for prosthetic foot

Prosthetic feet that provide improved rollover and performance are provided. A prosthetic foot can include a lower foot member extending from a heel end to a toe end, a second foot member disposed above the lower foot member, and an optional third foot member disposed above the second foot member.
Össur Iceland Ehf

Direct fabrication of orthodontic appliances with elastics

Improved orthodontic appliances, along with related systems and methods, are provided. In one aspect, an appliance includes a shell having a plurality of cavities shaped to receive teeth, a discontinuity formed in the shell, and an elastic member positioned to interact with the discontinuity.
Align Technology, Inc.



Stiffness topics:
  • Brush Assembly
  • Electronic Device
  • Piezoelectric


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