Including Cam Patents (Class 267/172)
  • Patent number: 10704634
    Abstract: A lower-side spring receiving member is adapted to receive a compression spring provided with an effective part, end turn parts which do not elastically deform, and rising parts located between the effective part and the end turn parts, at a lower side of the compression spring. The lower-side spring receiving member is provided with a contact part which is formed to protrude outward from an end at one side in the extending direction thereof, and which is in contact with the rising part so as not to form a gap between the contact part and the rising part. The contact part is in contact with the rising part of the compression spring by an elastic force caused by elastic deformation, regardless of a load on the compression spring.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: July 7, 2020
    Assignee: NHK Spring Co., Ltd.
    Inventors: Shuji Ohmura, Shohei Hosomi, Jun Umeno
  • Patent number: 9873303
    Abstract: A strut-type damper is disclosed. The damper has a shock absorber having a housing with a telescoping piston rod, a coil spring, an upper spring seat operably coupled to a distal end of the piston rod, and a lower spring seat operatively coupled to the housing. The upper and lower spring seats capture the coil spring therebetween. The lower spring seat has a base portion having an opening for receiving the housing and is fixedly securable to the housing. A generally circumferential wall portion extends from the base portion and forms a catcher for catching a broken portion of the coil spring if the coil spring fractures. An impact absorbing structure is formed on the lower spring seat adjacent both of the catcher and the base portion, and is configured to be crushed in the event of a fracture of the coil spring.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: January 23, 2018
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: Sven Broeckx, Tomasz Górski, Julien Wilkin, Jan Wójtowicz
  • Patent number: 9038996
    Abstract: A spring comprising a spring itself and end seat plates and a mount. In the spring seat plates are mechanically connected (constantly, variably, or actuable to connect) to each other and to the mount, so when a force or moment is applied to one of those seat plates its movement induce the movement of other seat plate as well, changing the total movement of the spring. Furthermore, there are provided mechanical means (a cams, a gears, a levers etc.) for changing the linkage between the end seat plates and the mount, which result in increasing, remaining the same (constant spring) or decreasing the spring constant. So, the spring constant of the spring can be controlled as to be adjustable.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: May 26, 2015
    Inventors: Rouslan Gousseinov, Eldar Guseynov
  • Patent number: 8439027
    Abstract: A door control mechanism which is attached near the hinge region of a door to bias the door to a closed orientation, and after a prescribed location, bias the door toward an open location to a sufficient degree such that the door is noticeably open. The door control mechanism in one form may have a cam extension that engages a spring member to supply stored energy to and from the spring member to bias the door closed and to bias the door open after a prescribed amount of rotation.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: May 14, 2013
    Assignee: Wood Stone Corporation
    Inventors: Lawrence Byron Johnson, Tadeusz Karabin
  • Patent number: 8430089
    Abstract: Provided is a heating cooker which allows a door on a cooking chamber to be opened without direct handling of the door by a user. The heating cooker includes a body having a cooking chamber defined therein, a door hingably mounted to the body to open and close the cooking chamber, a door holder positioned in the body to hold the door and keep the cooking chamber closed by the door, and a hinge part connected between the door and the body to guide rotation of the door such that when the door is released from the door holder, the door is automatically opened.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: April 30, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung Kwang Kim, Dae Sung Han, Yong Hyun Kwon, Seok Weon Hong, Tae Uk Lee, Pung Yeun Cho, Han Seong Kang, Sung Soo Park, Han Jun Sung, Tae Hun Kim
  • Publication number: 20130043629
    Abstract: A spring comprising a spring itself and end seat plates and a mount. In the spring seat plates are mechanically connected (constantly, variably, or actuable to connect) to each other and to the mount, so when a force or moment is applied to one of those seat plates its movement induce the movement of other seat plate as well, changing the total movement of the spring. Furthermore, there are provided mechanical means (a cams, a gears, a levers etc.) for changing the linkage between the end seat plates and the mount, which result in increasing, remaining the same (constant spring) or decreasing the spring constant. So, the spring constant of the spring can be controlled as to be adjustable.
    Type: Application
    Filed: December 2, 2011
    Publication date: February 21, 2013
    Inventors: Rouslan Gousseinov, Eldar Guseynov
  • Patent number: 8251338
    Abstract: A constant bearer having a fastening part, a load-bearing part and a spring system which is arranged between the fastening part and the load-bearing part for generating a carrying force which remains constant over a carrying travel of the load-bearing part with respect to the fastening part, where the spring system has a suspension system for absorbing the load, a compensation device for compensating for changing spring forces of the suspension system over the carrying travel, and a prestressing device for setting a prestressing force of the suspension system.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: August 28, 2012
    Assignee: LISEGA Aktiengesellschaft
    Inventors: Hans-Herlof Hardtke, Heinz-Wilhelm Lange
  • Publication number: 20120074256
    Abstract: A wing deploy initiator for deploying guidance wings of a rocket or missile, such as the APKWS, provides enhanced wing deploy performance with reduced complexity, cost, and likelihood of failure. The invention includes a cam which is driven between the stowed guidance wings by at least one compression spring, thereby forcing the guidance wings outward through slots in the fuselage of the rocket or missile. Oblique flat sides of the cam can push against beveled edges on the wings. The cam can be attached to spring mandrels, and the cam and mandrels can pass through a retaining plate as the springs decompress. Embodiments can exert sufficient push force to enable the wings to break through frangible slot covers. An embodiment applicable to the APKWS includes only 13 parts, and can exert up to 10 lb push force on each wing after 0.3 inches of wing travel.
    Type: Application
    Filed: April 4, 2011
    Publication date: March 29, 2012
    Inventors: Amy Pietrzak, Michael J. Krueger
  • Publication number: 20090174128
    Abstract: A device for adjusting the elastic force exerted by a plurality of springs, wherein there are provided main springs and auxiliary springs connected to two mutually movable structures. There are provided means for operatively coupling or uncoupling the connection of the free end of one or more of the auxiliary springs with respect to at least one of the structures.
    Type: Application
    Filed: April 18, 2007
    Publication date: July 9, 2009
    Applicant: DONATI S.P.A.
    Inventor: Armando Donati
  • Publication number: 20080224369
    Abstract: A suspension assembly of a motor vehicle including a suspension spring, a sheathing to be placed on a portion of at least an end coil of the suspension spring, a center cup on which the sheathed end of the suspension spring is placed, a mechanism for indexing the angular position of the sheath with regard to the centering cup, and a mechanism for indexing the angular position of the suspension spring with regard to the sheath.
    Type: Application
    Filed: September 28, 2006
    Publication date: September 18, 2008
    Applicant: Renault s.a.s.
    Inventors: Frederic Barraja, Laurent Urrutia
  • Publication number: 20080121197
    Abstract: A variable mechanical valve control for an internal combustion engine is provided having an underhead camshaft for adjusting a valve stroke and an opening and closing time, making it possible to achieve a very compact transmission gear between the push rod drive and the intake and exhaust valves, to reduce the number of components required for the transmission gear, and to obtain a mechanical, completely variable valve train with an underhead camshaft.
    Type: Application
    Filed: November 9, 2007
    Publication date: May 29, 2008
    Applicants: Hydraulik-Ring GmbH, Entec Consulting GmbH
    Inventor: Rudolf Flierl
  • Patent number: 6453795
    Abstract: A spring-actuated output drive device is used for example in medical aerosol therapy for a miniaturised high-pressure producing device for atomising a small dose of a liquid medicament. A locking-stressing-mechanism for such an output d rive device is to be stressed with the application of a relatively small amount of force and is to be released with one hand and is to operate reliably over a prolonged period of time. The locking-stressing-mechanism comprises a force step-up transmission, for example a screw thrust transmission for stressing the spring, an annularly arranged locking member with engaging locking surfaces, two abutments for limiting the travel of the spring and a release button. It is compact, economical to produce, easy to assemble and comprises components with a low rate of wear. It can be reliably and easily handled by unskilled persons, even when high spring forces are involved. A medicament to be atomised can thus be metered with a very high degree of accuracy.
    Type: Grant
    Filed: November 10, 1998
    Date of Patent: September 24, 2002
    Assignee: Boehringer Ingelheim International GmbH
    Inventors: Joachim Eicher, Michael Schyra, Richard Forster
  • Patent number: 6375175
    Abstract: The invention relates to a lifting mechanism for spring-assisted actuation of a covering means of a dishwasher such as a door or shutter, having at least one lever which is mounted on a shaft and is connected to a tension spring. Arranged, in this case, between the lever and the spring is a mechanical control means which brings about a more or less constant lever arm between an articulation point of the spring and the shaft over an angle of rotation of the shaft of up to approximately 100°.
    Type: Grant
    Filed: July 6, 2000
    Date of Patent: April 23, 2002
    Assignee: Winterhalter Gastronom GmbH
    Inventors: Michael Baumann, Hans Peter Hager
  • Patent number: 6273407
    Abstract: A bearing for a spring strut as well as for a coil spring of the spring strut is provided by way of spring supports which rest against supporting elements and are held in a mutually non-rotatable manner by twist fixations. The spring elements are constructed such that the same stiffnesses are formed over the circumference of the spring winding even though the twist fixation is provided. Furthermore, a spring plate of the lower bearing of the spring is provided. The spring plate is adjustably arranged on the shock absorber tube, and thus springs which have different lengths can be used.
    Type: Grant
    Filed: August 21, 2000
    Date of Patent: August 14, 2001
    Assignee: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventor: Francesco Germano
  • Patent number: 5871198
    Abstract: A vehicle seat suspension includes a bottom frame adapted to be mounted on the vehicle and a top frame located above the bottom frame and adapted to support a seat thereon. A substantially fully collapsible scissors linkage is interconnected between the bottom frame and the top frame enabling the bottom frame and the top frame to move relative to each other substantially in parallelism. A biasing arrangement is disposed between the top frame and the bottom frame and has a preload force urging the top frame away from the bottom frame. A first adjustment mechanism is located in the top frame and selectively enables fore and aft adjustment of the top frame relative to the bottom frame.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: February 16, 1999
    Assignee: H. O. Bostrom Company, Inc.
    Inventors: John M. Bostrom, Douglas P. Gennrich, Charles A. Van Breemen
  • Patent number: 5839321
    Abstract: An assembly that automatically compensates for backlash. The assembly includes two nut portions engaged to prevent relative rotation but permit relative movement in an axial direction. A sleeve is disposed between the nut portions with the opposite ends of the sleeve abutting annular rims formed on the nut portions. One end of the sleeve has at least one helical ramp extending around the its periphery that abuts a complementarily shaped ramp formed on the annular rim of one of the nut portions, while the other end of the sleeve has a flat outer surface abutting the flat annular rim of the other nut portion. A torsion spring has tangs secured to the sleeve and one of the nut portions and biases the sleeve rotatively with respect to the nut portions.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: November 24, 1998
    Assignee: Ball Screw & Actuators Co.
    Inventor: Alexander H. Siemons
  • Patent number: 5833317
    Abstract: The seat back flanges (32) mount a seat back (34) to a seat frame for reclining movement relative to the seat frame and a control mechanism controls the pivotal movement of the seat back (34). The control mechanism includes a tubular cylinder (54) and a first coil spring (56) is wound around and in gripping engagement with the cylinder (54). The cylinder (54) is non-rotatably secured to the seat frame by being welded or otherwise secured to the flanges (32). The first coil spring (56) has first (58) and second (60) ends extending tangentially from the cylinder (54). A second coil spring (62) is wound in the opposite direction around and is in gripping engagement with the cylinder (54) and, likewise, has third (64) and fourth (66) ends extending tangentially from the cylinder (54).
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: November 10, 1998
    Assignee: Lear Corporation
    Inventors: Andrew Massara, Philip Leistra, III, James Masters, Russell Davidson, Richard Lawrence Matsu, Sheryar Durrani
  • Patent number: 5765802
    Abstract: A vehicle seat suspension includes a bottom frame adapted to be mounted on the vehicle and a top frame located above the bottom frame and adapted to support a seat thereon. A substantially fully collapsible scissors linkage is interconnected between the bottom frame and the top frame enabling the bottom frame and the top frame to move relative to each other substantially in parallelism. A biasing arrangement is disposed between the top frame and the bottom frame and has a preload force urging the top frame away from the bottom frame. A first adjustment mechanism is located in the top frame and selectively enables fore and aft adjustment of the top frame relative to the bottom frame.
    Type: Grant
    Filed: August 2, 1996
    Date of Patent: June 16, 1998
    Assignee: H.O. Bostrom Company, Inc.
    Inventors: John M. Bostrom, Douglas P. Gennrich, Charles A. Van Breemen
  • Patent number: 5470049
    Abstract: A bearing assembly is disclosed for supporting a coil spring, for example for an automobile suspension system. The bearing assembly includes an elastic support having a sloped spring supporting surface corresponding to the pitch of the spring. At the side opposite the spring, the elastic support is supported by a distance element. The distance element and elastic support are geometrically configured so that a uniform axial length of the elastic support member is disposed between the spring and the distance element over a substantial circumference of the coil spring. In certain embodiments, recesses are formed in the elastic support member for engaging with cams at the distance element, with the ends of the cams and the bottoms of the recesses dimensioned so that there is a constant height of the elastic support between the spring and the distance element.
    Type: Grant
    Filed: March 25, 1993
    Date of Patent: November 28, 1995
    Assignee: Dr. Ing. h.c.F. Porsche AG
    Inventors: Hans J. Wohler, Francesco Germano
  • Patent number: 5351941
    Abstract: A constant force spring system having a coil spring with first and second arms, a ramp for the second arm to contact and a pin mounted on a base. The coil spring is mounted on the pin and the ramp is positioned such that the second arm of the spring contacts the sloped surface of the ramp. When a force is applied to the first arm of the spring it tends to move the second arm up the sloped ramp. This interaction of the second arm and sloped surface produces a reaction force. The slope angle and ramp configuration is configured such that there are equal and opposite forces produced by the spring system.
    Type: Grant
    Filed: August 13, 1993
    Date of Patent: October 4, 1994
    Inventor: Paul C. Hwang
  • Patent number: 5094262
    Abstract: A regulator with a hysteresis-affected characteristic curve has a manually operable actuating element for presetting a desired control variable, an axially displaceable control slide for adjusting the preset control variable and a control incline which is coupled to the actuating element. The control incline converts, by means of a rising control face, the adjustment movement of the actuating element into a axial displacement of the control slide. For the purpose of compensating the hysteresis when adjusting a control a variable such that the same control variable is brought about by rotating the actuating element to the left or to the right into the same setting, the control incline bears a toothing along its control face. Each tooth has, in two planes which extend along the displacement direction of the control face and are perpendicular to one another, a sawtooth-like contour with in each case a rising edge for running up the control slide and a falling edge which follows in the displacement direction.
    Type: Grant
    Filed: May 28, 1991
    Date of Patent: March 10, 1992
    Assignees: Mercedes-Benz AG, Walter Alfmeier GmbH & Co.
    Inventors: Rudolf Andres, Michael Dimitrov, Holger Seel, Dietmar Zwolfer, Klaus-Jurgen Heimbrodt, Gerold Dierks, Klaus Engelhardt, Dieter Simon
  • Patent number: 5018700
    Abstract: A suspension system for supporting pipes under generally constant tension comprises a main spring system including a main spring located between a suspension portion and a load-bearing portion for applying spring-biasing forces to the suspension portion. An additional spring system includes an additional spring which compensates for variations in the spring-biasing forces of the main spring through associated cam and cam followers. An auxiliary hydraulically operated mechanism is provided for applying a supplementary predetermined biasing force to increase or decrease the biasing forces of the main springs in response to detected value/parameters.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: May 28, 1991
    Assignee: Lisega GmbH
    Inventor: Hans-Herlof Hardtke
  • Patent number: 4768762
    Abstract: The weight of a pivoted body is counterbalanced by a spring acting on a cam connected to that body to pivot therewith. A band, connected to that spring, attaches to the cam and wraps around the cam. The cam's profile is contoured to produce moment arms of various lengths, through which the force of the spring acts, balancing the variable torque of the weight of the pivoted body.
    Type: Grant
    Filed: April 27, 1987
    Date of Patent: September 6, 1988
    Inventor: Kurt O. Lund
  • Patent number: 4687022
    Abstract: A pressure relief valve and regulator in which the valve chamber has a side port for connecting to the pressure line to be monitored. The valve seat opens to an exhaust and has a diameter slightly larger than the chamber diameter. The valve incorporates a double ended piston, spring, and cam whereby the cam offsets the normal compression gradient of the spring by rotating as the piston moves in and out.
    Type: Grant
    Filed: January 9, 1986
    Date of Patent: August 18, 1987
    Inventor: Jacob E. Iverson
  • Patent number: 4613822
    Abstract: An adjustable electrical load bank which comprises an upper and lower horizontal, electrically conducting plates mounted parallel to each other on a frame and both electrically insulated from this frame. The lower plate is fixedly mounted on the frame while the upper plate is movably connected thereto through four spring devices. Three vertical piles of disk-shaped carbon elements are disposed between the two horizontal plates and each have an electrical resistance between their respective upper and lower ends which varies with pressure applied thereon. An upper and lower pistons separated by an helicoidal spring are disposed in a vertical cylinder mounted on the frame. The upper piston is associated with a manually operated cam while the lower piston is fixedly connected to the upper plate. Upon operation of the cam, the helicoidal spring produces a force acting against a force generated by the four spring devices for applying pressure on the piles.
    Type: Grant
    Filed: October 21, 1983
    Date of Patent: September 23, 1986
    Inventor: Donald Reid
  • Patent number: 4613119
    Abstract: A suspension device for suspendingly supporting loads under a generally constant spring-biasing support force defined by two relatively movable portions, a first of the portions being secured to a support and a second of the portions being secured to a load to be suspendingly supported thereby, a main spring for biasingly mounting the first and second portions relative to each other, the second portion being an elongated member having an upper end portion, at least one compensatory spring adjacent the upper end portion of the elongated member, a pivoted lever between the one spring and the elongated member upper end portion, and a cam and cam follower carried by the lever and its elongated member upper end portion which compensates the tension and/or compression forces of the main spring as the cam and cam follower operate relative to each other.
    Type: Grant
    Filed: August 5, 1985
    Date of Patent: September 23, 1986
    Assignee: LISEGA Kraftwerkstechnik GmbH
    Inventor: Hans-Herlof Hardtke