Irregular Patents (Class 267/180)
  • Patent number: 10384877
    Abstract: A spring assembly includes a resilient member having a first and second end shanks and a central helical portion. The first end shank extends in a first direction from the central helical portion, and has a longitudinal axis from a proximal end to a distal end. The second end shank extends in a second, opposite direction from the central helical portion, and has a longitudinal axis from a proximal end to a distal end. The central helical portion includes one or more coils disposed about a central longitudinal axis, and has a first end attached to the proximal end of the first end shank and a second end attached to the proximal end of the second end shank. The axes of the shank ends and the axis of the central helical portion are parallel or are collinear. The assembly also includes an attachment site at each of the end shanks.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: August 20, 2019
    Assignee: General Kinematics Corporation
    Inventors: Kerry Quinn, Ed Steffes, Jr., Matt Pennington
  • Patent number: 10364891
    Abstract: The present invention relates to a method for fabricating a helical coil spring type seal. The method of the present invention is able to make the stacked layers of ring sharing the same center point during the making of the helical coil spring type seal.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: July 30, 2019
    Assignee: NEO MECHANICS LIMITED
    Inventor: Stanley Moon Kai Ko
  • Patent number: 10151372
    Abstract: A torque transmission apparatus including a first rotor, a second rotor, an elastic body deployed in a torque transmission path between the first rotor and the second rotor to absorb torque fluctuation between the first and second rotors, and a pair of seat members. The pair of seat members include holding portions for holding ends of the elastic body at one end surfaces and contact surfaces at the other end surfaces, and the contact surfaces are formed into convex curved surfaces so as to rollably contact concave curved lateral end surfaces of a housing of the first rotor and concave curved lateral end surfaces of projecting portions of the second rotor.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: December 11, 2018
    Assignee: Honda Motor Co., Ltd.
    Inventor: Toshiki Murata
  • Patent number: 10011034
    Abstract: A cutting plotter includes a driving roller, a rotating shaft, pinch rollers, a cutter, and a press roller. The driving roller extends in a direction of a first axis and rotates around the first axis. The rotating shaft extends in a direction of a second axis parallel to the first axis, and is configured to be rotatable around the second axis. A passage through which a cutting target passes is formed between the driving roller and the rotating shaft. The pinch rollers are provided on the rotating shaft. The cutter is selectively pressed to the cutting target. The press roller is provided on the rotating shaft between the pinch rollers, and presses the cutting target against the driving roller. The press roller is formed by a coil spring into which the rotating shaft is inserted.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: July 3, 2018
    Assignee: Graphtec Corporation
    Inventors: Kazuhiro Watanabe, Ryoichi Oka
  • Patent number: 9981646
    Abstract: A spring-type brake cylinder that includes a compression spring, a pressure chamber, a dividing wall disposed between the compression spring and the pressure chamber, a piston having an inner wall and a bottom, and a nut disposed inside the piston and configured to be held on a release bolt. A support structure is disposed inside the piston and configured to abut against the nut while the release bolt is screwed into the nut. The piston comprises a first retaining structure and a second retaining structure, the first retaining structure configured to hold the support structure in an assembly position and the second retaining structure configured to hold the support structure in a drive position. The support structure is moveable from the assembly position to the drive position by a movement of the nut relative to the piston.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: May 29, 2018
    Assignee: WABCO Europe BVBA
    Inventors: Bartosz Dobrowolski, Oktawian Szuberski
  • Patent number: 9913740
    Abstract: The present disclosure describes methods and apparatus for endoluminal devices, such as stents, that have components with varying cross-sections at various points about the length of the endoluminal device, with various benefits resulting therefrom.
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: March 13, 2018
    Assignee: W. L. Gore & Associates, Inc.
    Inventor: Vincent L. Perko
  • Patent number: 9868652
    Abstract: A flexible thermoplastic tube having a stiffening member installed inside is described herein. Mechanisms to couple both the stiffening member and outer tube are also described. The stiffened tube is particularly useful in oil skimming equipment for remediation of hydrocarbons in containment pools.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: January 16, 2018
    Assignee: OIL SKIMMERS, INC.
    Inventor: Robert B Washburn
  • Patent number: 9783017
    Abstract: A suspension coil spring, when assembled to a suspension device, in which a spring reaction axis (AR) is positioned coincident with or sufficiently close to a load input axis (AA), and the design and manufacture of coil springs are facilitated. Namely, a suspension coil spring (10) in a free state is formed so that a coil axis (AC) is bent in V-shape at bend point (PB) and the distance from the end turn center (CU) of the upper seating surface (38) to an imaginary coil axis (AI) is an upper inclination amount (VU), and the distance from the end turn center (CL) to the imaginary coil axis (AI) is a lower inclination amount (VL). When the suspension coil spring (10) is interposed between spring seats (22, 24) in the suspension device and compressed along a strut axis, the spring reaction AR axis of the suspension coil spring (10) is inclined and offset with respect to the imaginary coil axis (AL) according to the inclination amounts (VU, VL).
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: October 10, 2017
    Assignee: MITSUBISHI STEEL MFG. CO., LTD.
    Inventors: Junji Ogura, Yukihiro Sugimoto, Masahiko Shimizu
  • Patent number: 9248242
    Abstract: A safety device for a medicine cartridge comprising a body for receiving a cartridge, a guard for covering a used needle, a plunger to dispense medicine from the cartridge and a spring for activation of the guard. The trigger fingers of the guard are spaced to avoid or minimize contact with the spring flange during assembly to avoid trigger finger unseating. An elongated trigger finger head enables the device to activate for all known syringe and syringe plunger tolerances. The spring end coils have larger diameter than the inner coils to reduce the likelihood of the spring end coil end interfering with the cartridge subassembly. Syringe capture features are configured to retain a syringe having a small round or conventional cut flange in place during use and reduce the stress on the syringe flange during insertion while maintaining the ability to hold the syringe in place during use.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: February 2, 2016
    Assignee: SAFETY SYRINGES, INC.
    Inventors: James M. Verespej, Ryan Schoonmaker, Philip Dowds, Frederic P. Field
  • Patent number: 9182000
    Abstract: A spring element for a drug delivery device is proposed, the spring element comprising multiple windings with two windings being mechanically coupled to each other by a rigid transverse connection. Furthermore, a drug delivery device comprising such a spring element and using such a spring element in a drug delivery device are proposed.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: November 10, 2015
    Assignee: SANOFI-AVENTIS DEUTSCHLAND GMBH
    Inventors: Michael Harms, Steffen Raab, Uwe Dasbach
  • Patent number: 9145871
    Abstract: A V-spring member (18) for use in a driving system for a personal care appliance has regions (34, 36) at the ends of the spring which are large enough to support a contact with an end clamping assembly, the spring member including a cross-piece (40) extending between the longitudinal edges of the spring at the end regions, such that the ends of the spring member define a closed line. End clamping assemblies (16, 24) provided for such a V-spring member include a body portion (64) having a lower support portion (66) on which the V-spring is supported and a mating clamping member (88) positioned in registry with the support portion on top of the V-spring.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: September 29, 2015
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Tyler G. Kloster, Hendrik Richard Jousma, Michiel Allan Aurelius Schallig, Martinus Bernardus Stapelbroek, Patrick A. Headstrom, Scott E. Hall, Wolter F. Benning
  • Patent number: 9010740
    Abstract: Coil, tube, and other structures configured with a plurality of individual coils, internal structures, legs or extensions with each having multiple cants per coil, internal structure, leg or extension, and wherein the cants formed therein allow for a load-deflection force when each is compressed. In addition, any horizontal or moment forces are substantially reduced and/or eliminated when a downward vertical force is applied, as minimal or no torsion is created in the individual coils, legs or extensions.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: April 21, 2015
    Assignee: Veloce Labs, LLC
    Inventor: Mark L. Jaster
  • Patent number: 9010726
    Abstract: A technique provides a component actuation system in a space efficient form. A movable actuator member may be positioned within a corresponding housing in a manner which forms an annulus between the movable actuator member and the surrounding wall of the housing. A spring is located in the annulus and is designed such that the spring extends part way along a circumference of the actuator member to create an open annular region between circumferential ends of the spring. The open annular region provides space for a system related component without requiring additional longitudinal or radial space.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: April 21, 2015
    Assignee: Schlumberger Technology Corporation
    Inventor: David James Biddick
  • Publication number: 20150084251
    Abstract: A high tension coil spring for a bed mattress having an exposed wiring portion which is formed on the coil spring and works together with a body spring to absorb an external load. A gap A is provided on at least one of upper and lower end wiring portions 14 and 14? so as to define a space in which at least one of turns 16-5 and 16-5? of upper and lower exposed wiring portions 16 and 16? moves upward and downward while the coil spring is being compressed. Frictional noise between the upper and lower end wiring portions and the upper and lower turns 16-5 and 16-5? of upper and lower exposed wiring portions 16 and 16? is fundamentally prevented. The elasticity of the upper and lower exposed wiring portions is increased. The wiring portions move only upward and downward without being displaced or deformed in the lateral direction, thereby increasing longevity.
    Type: Application
    Filed: September 23, 2014
    Publication date: March 26, 2015
    Inventor: Yoo Soo Ahn
  • Patent number: 8985234
    Abstract: A coulter assembly for an agricultural implement. The coulter assembly includes a support structure and a disc blade rotatably mounted to the support structure. The coulter assembly also includes a spring assembly coupled to the support structure and configured to urge the disc blade into soil. The spring assembly includes a variable rate spring.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: March 24, 2015
    Assignee: CNH Industrial Canada, Ltd.
    Inventors: Gerard James Gadzella, Robin Bruno Schilling
  • Patent number: 8979079
    Abstract: A progressive spring coil comprises a first spring portion comprising a top end and a bottom end and having a first spring rate, wherein the first spring rate is substantially linear or substantially nonlinear; a second spring portion comprising a top end and a bottom end and having a second spring rate, wherein the second spring rate is substantially linear or substantially nonlinear; and a third spring portion disposed between the first spring portion and the second spring portion, wherein the third spring portion has a third spring rate, wherein the third spring rate is substantially linear or substantially nonlinear.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: March 17, 2015
    Assignee: Dreamwell, Ltd.
    Inventors: Michael S. DeFranks, David Brooks, Michael Golin, Rahul Kirtikar
  • Publication number: 20150068568
    Abstract: An opening spring for multiple fold automatic open-close umbrellas is revealed. The opening spring is disposed in a shaft to provide power for extending the shaft while opening the umbrella. The opening spring is formed by a wound wire with a constant wire diameter and having a plurality segments of coils with different outer diameters. A gradually changing part is disposed between two adjacent segments of coils. The coil outer diameter of the gradually changing part is reduced from top to bottom along the axial direction.
    Type: Application
    Filed: September 12, 2013
    Publication date: March 12, 2015
    Inventor: Tsun-Zong Wu
  • Publication number: 20150023713
    Abstract: [Problem] To provide a coil spring for cosmetic material that can provide wide variety of functions with one spring and a cosmetic container including the coil spring for cosmetic material. [Solution] A coil spring for cosmetic material 5 is a one spring where a first spring part 5a and a second spring part 5b whose winding wire diameters and spring constants differ from one another are continuously and integrally formed via a stepped part 5d. Accordingly, the use of the first spring part 5a and the second spring part 5b allows, for example, achieving absorbing an impact in both directions of an axial direction and sequential movements of the components constituting the cosmetic container, thus allowing providing wide variety of functions with the one spring. For example, the use of the stepped part 5d also allows locking the component constituting the cosmetic container.
    Type: Application
    Filed: June 19, 2014
    Publication date: January 22, 2015
    Inventor: Yukikazu ISHIDA
  • Patent number: 8925908
    Abstract: A spring (10), for a locking device of a vehicle seat, is designed as a yoke spring defining an axis (A) and made of a spring wire. A cross section diameter (q) has one leg (10a) on each of both ends of the spring wire. The two legs (10a) can pivot relative to each other in a circumferential direction of the axis (A), thereby transitioning the spring (10) from a relaxed state into a tensioned state. At least one first winding (10b) is provided between the legs (10a) that is wound completely around the axis (A) and having a winding diameter (di) in the relaxed state. At least one adjacent second winding (10b) is provided between the legs (10a) and disposed offset along by the axis (A) by a pitch (h), wherein the second winding (10b) may optionally be wound not fully about the axis (A). The second winding (10b) has a winding diameter (d2) in the relaxed state. The pitch (h) is less than the cross section diameter (q).
    Type: Grant
    Filed: December 5, 2009
    Date of Patent: January 6, 2015
    Assignee: Johnson Controls Components GmbH & Co. KG.
    Inventors: Peter Müller, Volker Windecker
  • Publication number: 20140283922
    Abstract: In accordance with an exemplary embodiment, a method for manufacturing a bypass valve of a turbine engine control system is described. The bypass valve includes a proportional valve and an integrator valve and the integrator valve includes an integrator spring assembly. The method includes forming the integrator spring assembly using an additive manufacturing technique. The integrator spring assembly comprises first and second end portions with a spring portion disposed between the first and second end portions. The first and second end portions and the spring portion are formed as an integral unit without welding or brazing using the additive manufacturing technique. The method further includes assembling the integrator spring assembly, the integrator valve, and the proportional valve into a complete bypass valve assembly.
    Type: Application
    Filed: January 15, 2013
    Publication date: September 25, 2014
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventor: HONEYWELL INTERNATIONAL INC.
  • Publication number: 20140250602
    Abstract: A complex spring unit (10) comprises at least a first spring portion (12) and a second spring portion (14), which first and second spring portions are integrally formed, wherein the first spring portion is arranged in use to be placed under compression, and the second spring portion is arranged in use to be placed under tension, during compression of the complex spring unit.
    Type: Application
    Filed: October 10, 2012
    Publication date: September 11, 2014
    Applicant: SPINKO LIMITED
    Inventors: Simon Paul Spinks, David Clare
  • Publication number: 20140219713
    Abstract: Coil springs with a plurality of interconnected coils each being defined by a wire path that results in a coil cross section that, when viewed along the coil axis, has at least two differentiated spaces each confined by the wire. Assemblies using such coil springs are also disclosed.
    Type: Application
    Filed: January 27, 2014
    Publication date: August 7, 2014
    Applicant: BAL SEAL ENGINEERING, INC.
    Inventors: Peter J. Balsells, Richard Dawson
  • Publication number: 20140162794
    Abstract: Improved performance of arc coil springs by stress reduction when they are bottomed out is achieved by forming the coil spring wire in a substantially trapezoidal or other shape such that when bottomed, the side surfaces of the coil abut and carry the bottoming load which is distributed over a comparatively large surface area. The angles of the sidewalls of the substantially trapezoidal cross section wire are preferably coincident with lines of radius when the spring is installed in an arc in a clutch, damper or flywheel. The radius of the outer surface of the arc coil spring wire is matched to the radius of the inner surface of the guide or housing so that the area of contact is large, thereby distributing the outwardly directed spring force over a large area, reducing the force per unit area and improving lubrication retention on the contacting surfaces.
    Type: Application
    Filed: December 10, 2012
    Publication date: June 12, 2014
    Applicant: GM Global Technology Operations LLC
    Inventor: Andrew W. Phillips
  • Patent number: 8684342
    Abstract: A coil spring has a spring wire wound in a coil shape having an outer diameter side portion and an inner diameter side portion on a peripheral shape in a cross section thereof, one of the outer diameter side portion and inner diameter side portion formed in a semi-circular shape expressed by x2+y2=b2, the other thereof formed in a non-circular shape with a long diameter “a” and a short diameter “b” expressed by (x/a)?+(y/b)?=1, and value of the “?” set in a range of 1.85 to 2.45, and contact faces provided between the inner diameter side portion and the outer diameter side portion on the peripheral shape in the cross section such that each contact face comes into contact with a contact face of an adjacent coil in an axial direction along an axis line of the coil spring.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: April 1, 2014
    Assignee: NHK Spring Co., Ltd.
    Inventors: Daniel Fenioux, Nobuharu Kato, Takeshi Yabushita
  • Patent number: 8641023
    Abstract: The invention relates to a method of manufacturing a spring for a timepiece, including the following steps: (a) forming a body using first and second metallic materials secured to each other; (b) decreasing the section of the body; and winding the body to form the spring. The invention also relates to the spring obtained via the method. The invention concerns the field of regulating members for timepieces.
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: February 4, 2014
    Assignee: Nivarox-FAR S.A.
    Inventors: Christian Charbon, Marco Verardo, José Quintina
  • Publication number: 20130330122
    Abstract: Canted coil springs are disclosed wherein wires used to form the springs have sections with shapes that are not generally round. The different shapes are configured to increase contact surface areas by providing more surface-to-surface contacts with adjacent surfaces of a housing and a shaft over a single point contact typically found with round wires. The disclosed springs may be used with a housing and a shaft in a holding application, a latching application, a locking application, or combinations thereof.
    Type: Application
    Filed: June 3, 2013
    Publication date: December 12, 2013
    Inventors: Majid Ghasiri, Peter J. Balsells
  • Patent number: 8590867
    Abstract: A canted coil spring includes a plurality of canted coils generally canted relative to a centerline extending through the coils. At least one coil when viewed in the direction of the centerline appears to have a non-elliptical shape and a non-circular shape when the at least one coil is in the unbiased state. The plurality of coils is generally canted at a first coil angle relative to the center line. The at least one coil includes at least one section canted at a second coil angle relative to the centerline. The second coil angle is different from the first coil angle when the at least one coil is in an unbiased state.
    Type: Grant
    Filed: September 15, 2010
    Date of Patent: November 26, 2013
    Assignee: Bal Seal Engineering, Inc.
    Inventor: Gordon Leon
  • Patent number: 8413969
    Abstract: A nodal-mounted spring arrangement for an electronic toothbrush includes a V-shaped spring member secured at both ends so that it can operate in out-of-phase torsion mode along the axial dimension thereof. A mounting plate is connected between a node point along the V-shaped spring member and the housing of the toothbrush. In one embodiment, the V-shaped spring member includes opposing slots on opposite sides of the node point, the slots extending in an axial direction, creating an integrated torsion bar node spring, while reducing stress in the vicinity of the nodal point.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: April 9, 2013
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Gerrit Jan De Jong, Michiel Allan Aurelius Schallig, Hendrik Richard Jousma, Martinus Bernardus Stapelbroek, Tyler G. Kloster, Scott E. Hall, Patrick A. Headstrom
  • Publication number: 20130062821
    Abstract: A coil spring forming apparatus including a core bar 2 which rotates around an axis thereof and on which a wire material W fed from a wire material-feeding means is wound; a clamping portion 22 which rotates integrally with the core bar 2 and grips an end of the wire material W on the core bar 2; and first guide rollers 30 and second guide rollers 40 for guiding the wire material W onto the core bar 2; wherein the first guide rollers 30 and the second guide rollers 40 are provided so as to move independently from each other in parallel with the axis of the core bar 2, and a coil spring formed by the above coil spring forming apparatus.
    Type: Application
    Filed: September 14, 2012
    Publication date: March 14, 2013
    Applicant: Mitsubishi Steel Mfg. Co., Ltd.
    Inventor: Takashi Eto
  • Patent number: 8393602
    Abstract: A coil spring with irregular cross section according to the present invention is made by subjecting a coil wire having an irregular cross section to a fatigue-strength improving treatment including a shot peening treatment after coiling the coil wire into a spring configuration, and the coil spring with irregular cross section has a vertical cross sectional profile whose coil inner-peripheral-side section is expressed by following Equation (1) and Equation (2) in a polar coordinate system and orthogonal coordinate system: x=(LR??b)cosnxr ?+?b??(1) y=SR sinnyr ???(2) wherein ? is a deflection angle in said polar coordinate system; and 0°??<90°, 270°??<360°, 0.7?nxr?0.9, 0.8?nyr?1.0, and 0.1SR??b?0.3SR; in said Equation (1) and Equation (2). In accordance with the present invention, it is possible to provide a coil spring with irregular cross section that exhibits more uniform and higher fatigue strength along a cross-sectional peripheral direction of the coil wire.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: March 12, 2013
    Assignee: Togo Seisakusyo Corporation
    Inventors: Hisao Isobe, Jun Matsumoto
  • Publication number: 20130031726
    Abstract: Encased hourglass coils and encased hourglass coil mattress cores have steel wire coils with an hourglass profile encapsulated in a sheet material enclosure, package, casing, housing, containment or encapsulation, wherein coils are enclosed within an enclosure made of fabric, non-woven, or other material which encapsulates each individual coil spring and serves to maintain multiple coil springs in an array or alignment in a mattress core. The hourglass configurations of the coils, wherein at least one helical convolution of the coil body located between the coil ends has a diameter which is less than every other convolution of the coil body, provides a mattress core which has a relatively lower spring rate upon initial compression and a higher spring rate at higher compression loads.
    Type: Application
    Filed: August 13, 2012
    Publication date: February 7, 2013
    Applicant: Sealy Technology, LLC
    Inventor: Larry K. DEMOSS
  • Patent number: 8337368
    Abstract: A floor system (20) includes a plurality of cushioning devices (22) attached to a lower side (40) of a wood floor (32). Each cushioning device (22) includes a spring (46) that may be attached at each of its ends to first and second caps (48, 50). The spring (46) includes longitudinally aligned regions (58, 60) interposed between the caps (48, 50). The region (58) exhibits a lower spring rate (64) than a spring rate (66) of the other region 60. In response to an imposed force, the first region (58) of spring (46) first compresses. When the imposed force is great enough, due to a user's weight, the second region (60) of spring (46) will then compress.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: December 25, 2012
    Inventor: Scott M. Weller
  • Patent number: 8297600
    Abstract: A plastic spring having a corrugated tubular body with connection surfaces at its ends for transmitting force between two structural component parts which are movable relative to one another. A connection surface of the plastic spring is constructed as a tubular body which engages in a cup element of one of the supporting structural component parts. The cup element can be filled with a displacement mass, and the tubular body accordingly carries out a displacing movement within the cup element for axially adjusting the preloading of the plastic spring.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: October 30, 2012
    Assignees: ZF Friedrichshafen AG, Leichtbau-Zentrum Sachsen GmbH
    Inventors: Hendrik Marquar, Manfred Schuler, Josef Renn, Klaus Stretz, Karin Sundermann, Michael Zutzmann, Werner Hufenbach, Martin Lepper, Jens Werner, Christian Köhler
  • Patent number: 8267384
    Abstract: An annular seal device includes a mandrel, at least one cone axially moveable on the mandrel, at least one sealing element having a frustoconical outer surface and a frustoconical inner surface, at least one contact feature at the at least one cone and operably engageable with the at least one sealing element, and at least one of a blocking element and a resilient member at the mandrel, the at least one of a blocking element and a resilient member supporting a blocking surface in opposition to the at least one contact feature. The resilient member itself includes a tubular body having spring rings at axial ends thereof, and a plurality of beams extending spirally from one axial end to the other axial end.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: September 18, 2012
    Assignee: Baker Hughes Incorporated
    Inventors: Marcus A. Avant, Rafeal Ramirez
  • Publication number: 20120186027
    Abstract: A spring assembly including a helical coil formed from a multi-strand cord.
    Type: Application
    Filed: January 23, 2012
    Publication date: July 26, 2012
    Applicant: DREAMWELL, LTD.
    Inventors: RICHARD F. GLADNEY, BERNHARD W. KUCHEL, MICHAEL S. DEFRANKS
  • Patent number: 8214184
    Abstract: A finite element analysis (FEA) based coil spring design method that utilizes a reverse engineering based concept. The method involves first designing a desired jounce profile, which is typically an output in the conventional FEA based design, and then reversely determining the corresponding free profile necessary for manufacturing a spring having desired performance specifications.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: July 3, 2012
    Assignee: NHK International Corp.
    Inventors: Shinichi Nishizawa, Tadashi Sakai
  • Patent number: 8210067
    Abstract: A shifting device for a manual transmission having a shift rocker formed by two rocker arms connected by a rocker bridge, which is arranged over a shift sleeve via two slide-blocks attached to a holder at the end of each rocker arm, which pivots about a transverse axis defined by bearing points. A carrier element is positioned off-center on the rocker bridge to engage with a shifting pin of a shifting shaft. The rocker arm closer to the carrier element has a lower elastic rigidity than the other rocker arm. To produce different spring rigidities, the rocker arm closer to the carrier element has the geometrical form of a spring element which is elastic in the pivoting direction. The, rocker arm farther away from the carrier element is a bracket with relatively greater elastic rigidity.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: July 3, 2012
    Assignee: ZF Friedrichshafen AG
    Inventor: Uwe Beer
  • Publication number: 20120112396
    Abstract: A progressive spring coil comprises a first spring portion comprising a top end and a bottom end and having a first spring rate, wherein the first spring rate is substantially linear or substantially nonlinear; a second spring portion comprising a top end and a bottom end and having a second spring rate, wherein the second spring rate is substantially linear or substantially nonlinear; and a third spring portion disposed between the first spring portion and the second spring portion, wherein the third spring portion has a third spring rate, wherein the third spring rate is substantially linear or substantially nonlinear.
    Type: Application
    Filed: November 9, 2011
    Publication date: May 10, 2012
    Applicant: DREAMWELL, LTD
    Inventors: Michael S. DeFranks, David Brooks, Michael Golin, Rahul Kirtikar
  • Patent number: 8152147
    Abstract: A torsion spring assembly includes a torsion spring body and a fixed base. The torsion spring body has a first coil part and a second coil part. The first coil part connects to the second coil part. The fixed base has a first fixed arm and a second fixed arm. The first coil part is wound around the first fixed arm and the second coil part is wound around the second fixed arm. The winding direction of the first coil part is perpendicular to the winding direction of the second coil part. A portable electronic device with the torsion spring assembly is also disclosed.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: April 10, 2012
    Assignee: ASUSTeK Computer Inc.
    Inventor: Wei-Te Yang
  • Patent number: 8099811
    Abstract: A spring assembly including a helical coil formed from a multi-strand cord.
    Type: Grant
    Filed: January 29, 2007
    Date of Patent: January 24, 2012
    Assignee: Dreamwell, Ltd.
    Inventors: Richard F. Gladney, Bernard W. Kuchel, Michael S. DeFranks
  • Patent number: 8066036
    Abstract: A complex coil and a fixture for forming same configured such that loops are formed having various configurations relative to each other. The configurations provide improved thrombus formation and reduced rotation or tumbling once implanted. The complex coil is formed of a material that may deformed for purposes of placing the complex coil into a catheter and returns to a complex shape that includes said loops once deployed.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: November 29, 2011
    Assignee: Microvention, Inc.
    Inventors: Richard Monetti, George Martinez, Matthew Fitz, Damian Jonathan Perez
  • Patent number: 8061696
    Abstract: A shock-absorbing spring for vehicles has a deformed egg-shaped cross section different from a conventional round cross section. In comparison to the conventional spring under a same length, the invention has a lighter weight and a longer spring travel. Moreover, stress can be uniformly distributed toward two sides of the cross section of the invention so that the invention can bear more stress and lengthen its service life.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: November 22, 2011
    Assignee: Yang Min Enterprise Corporation
    Inventor: Ching-Liang Liu
  • Publication number: 20110169205
    Abstract: This invention provides a helical spring formed of plastic material, comprising a pair of end coils situated at respective ends of said helical spring; at least one full pitch active coil between said pair of end coils; a pair of transition coils, each transition coil interconnecting an end of a respective end coil to an end of a respective proximate full pitch active coil, and having a varying pitch.
    Type: Application
    Filed: January 8, 2010
    Publication date: July 14, 2011
    Inventors: Stephen Kempf, Albert Mangels, Subramanya Naglapura, Sean Diamond, Brian Moulder, Brian Straiton
  • Patent number: 7950596
    Abstract: A fuel injector includes a fuel injector body defining a fuel inlet and at least one fuel outlet, a valve having a first valve state and a second valve state and an actuator for the valve. The fuel injector includes a biasing spring including a cylindrical rolled sheet having a first spring end, a second spring end and defining a longitudinal center axis. The cylindrical rolled sheet is configured to change in length to bias the actuator toward the first actuator position and includes a helical seam located between the first spring end and a second spring end which has a shape adapted to reduce non-uniformity in a spring constant via distributing stiffness about the longitudinal center axis.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: May 31, 2011
    Assignee: Caterpillar Inc.
    Inventors: Jay Venkataraghavan, Michael Long, Zhenlong Xu, Stephen Lewis
  • Publication number: 20110068523
    Abstract: A canted coil spring includes a first section having a plurality of first canted coils generally canted at an acute first angle relative to a first direction of a centerline extending through the first canted coils, and at least a second section coupled to the first section and having a plurality of second canted coils generally canted at an acute second angle relative to a second direction of the centerline extending through the second canted coils. The second direction is opposite to the first direction when the centerline is in a linear configuration. A method of manufacturing the canted coil includes fabricating a first wire section in a canted helical configuration thereby forming the plurality of first coils, and fabricating at least a second wire section in a canted helical configuration thereby forming the plurality of second coils. The first wire section is coupled to the second wire section.
    Type: Application
    Filed: September 21, 2010
    Publication date: March 24, 2011
    Inventor: Shawn Noh
  • Publication number: 20110031667
    Abstract: A coil spring with irregular cross section according to the present invention is made by subjecting a coil wire having an irregular cross section to a fatigue-strength improving treatment including a shot peening treatment after coiling the coil wire into a spring configuration, and the coil spring with irregular cross section has a vertical cross-sectional profile whose coil inner-peripheral-side section is expressed by following Equation (1) and Equation (2) in a polar coordinate system and orthogonal coordinate system: x=(LR??b)cosnxr?+?b??(1) y=SRsinnyr???(2) wherein ? is a deflection angle in said polar coordinate system; and 0°??<90°, 270°??<360°, 0.7?nxr?0.9, 0.8?nyr?1.0, and 0.1SR??b?0.3SR; in said Equation (1) and Equation (2). In accordance with the present invention, it is possible to provide a coil spring with irregular cross section that exhibits more uniform and higher fatigue strength along a cross-sectional peripheral direction of the coil wire.
    Type: Application
    Filed: February 23, 2009
    Publication date: February 10, 2011
    Inventors: Hisao Isobe, Jun Matsumoto
  • Patent number: 7841088
    Abstract: A suspension coil spring, when assembled to a suspension device, in which a spring reaction axis is positioned coincident with or sufficiently close to a load input axis, and the design and manufacture of coil springs are facilitated. Namely, A suspension coil spring (19) in a free state is formed so that a coil axis (AC) is bent in V-shape at bend point (PB) and the distance from the end turn center (CU) of the upper seating surface (38) to an imaginary coil axis (AI) is an upper inclination amount (VU), and the distance from the end turn center (CL) to the imaginary coil axis (AI) is a lower inclination amount (VL). When the suspension coil spring (10) is interposed between spring seats (22, 24) in the suspension device and compress along a strut axis, the spring reaction axis of the suspension coil spring (10) is inclined and offset with respect to the imaginary coil axis (AI) according to the inclination amounts (VU, VL).
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: November 30, 2010
    Assignee: Mitsubishi Steel Mfg. Co., Ltd.
    Inventors: Junji Ogura, Yukihiro Sugimoto, Masahiko Shimizu
  • Patent number: 7814594
    Abstract: A one-sided mattress construction includes a spring assembly with asymmetric spring coils. Only the bottom portion of each spring coil is attached, either to adjacent spring coils or to a bottom surface of the mattress. The top portion of each spring may have a narrowing taper that permits the top to move independent of other adjacent springs.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: October 19, 2010
    Assignee: Dreamwell, Ltd.
    Inventors: Michael S. DeFranks, Bernhard W. Kuchel
  • Patent number: 7793923
    Abstract: A wave coil spring includes: a spring main body which has a spiral structure of a wave-shaped spring material, the spring main body bearing an axial compressive load in such a state that surfaces of the spring main body which face each other are brought into contact with each other at a plurality of contact portions, the plurality of contact portions including: a first contact portion where a component of force is produced with application of the compressive load, which attempts to cause the spring main body to slide in a direction in which the coil main body is wound spirally; and a second contact portion where a component of force is produced with application of the compressive load, which attempts to cause the spring main body to slide in a direction in which the spring main body is unwound spirally.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: September 14, 2010
    Assignee: Piolax, Inc.
    Inventor: Hiroyuki Suzuki
  • Patent number: 7731562
    Abstract: Toy helices each having a variable rate of movement. The toy helices, such as springs and coils, for example, may be formed of at least two different types of material each having different properties such as elasticity, flexibility, and attraction. In one embodiment, a first portion of a toy helix may be constructed of a first material having a first elasticity and a second portion of a toy helix may be coupled to the first portion and constructed of a second material having a second elasticity. The first elasticity and second elasticity are not identical and, thus, have different restoring forces acting to return the toy helix to its original shape. After such a toy helix is stretched, for example, the helix has a variable rate of movement during return to the compressed state because the first portion returns to its original shape at a different rate than the second portion.
    Type: Grant
    Filed: September 12, 2006
    Date of Patent: June 8, 2010
    Inventor: Virgil D. Huber