Patents Examined by Douglas C. Butler
  • Patent number: 7195234
    Abstract: A gas spring suspension system that adjusts the spring rate as the travel is adjusted. The suspension system includes a frame, a pressure chamber, a compression piston assembly, an adjustment assembly, a piston tube, and a shaft. The piston tube is operatively connected to the adjustment assembly and the compression piston assembly, and the compression piston assembly is configured to slidably displace along the piston tube to change the pressure in the pressure chamber. The adjustment assembly is associated with the frame and is operable to axially position the piston tube and, in turn the compression piston assembly, relative to the frame to adjust the travel of the suspension system. The shaft is configured to be variably positionable within the pressure chamber in response to axial displacement of the piston tube and the compression piston assembly by the adjustment assembly, the variable positioning of the shaft within the pressure chamber changing the pressure therein.
    Type: Grant
    Filed: November 28, 2003
    Date of Patent: March 27, 2007
    Assignee: SRAM Corporation
    Inventors: Brian T. Jordan, Christopher A. Shipman, John D. Cheever, Steven J. Olds
  • Patent number: 7156215
    Abstract: A quick change shock absorber for providing for the quick and easy removal of a shock absorber from a fixture of an industrial machine. The quick change shock absorber provides a housing having a smooth, outer bore and a blind bore adaptable to hold a fluid. A piston is slidably disposed within the bore of the housing and is engageable with a driver for movement between an extended position, wherein the piston has a portion extending outwardly from the housing, and a retracted position, wherein the piston is disposed within the housing. The outer periphery is receivable by the fixture which has a bore for complementarily receiving the outer periphery of the housing. A rubber retaining ring seated within a recess of the housing of the shock absorber creates a level of friction between the outer periphery of the housing and the fixture that constitutes a snug fit for quick change removal and replacement of the housing from the fixture.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: January 2, 2007
    Assignee: Enertrols, Inc.
    Inventors: Richard T. Mitera, Robert Heideman, Ronald F. Legawiec
  • Patent number: 7118099
    Abstract: in particular for a motor vehicle, includes a high pressure chamber containing a gas cushion acting as a spring, and a working cylinder which is filled with damping medium under pressure of the gas cushion. A working piston carried by a hollow piston rod divides the working cylinder into two working spaces, wherein one of the working spaces is connected to the high pressure chamber to drive the piston under the pressure of the gas cushion, the piston having at least one non-return valve which permits flow from the one working space to the other working space.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: October 10, 2006
    Assignee: ZF Sachs AG
    Inventor: Hubert Beck
  • Patent number: 7077249
    Abstract: This invention is a new type of drum brake and its variants for motor vehicles, the shoe mechanism assembly of which has at least one set of interconnected shoe mechanism and automatic adjusting mechanism of brake clearance. The interconnected shoe mechanism consists of two interconnected composite shoes of multiple degrees of freedom. Each composite shoe consists of a shoe and a driving lever. The shoe is jointed to the driving lever with a cylindrical pin or a elliptical pin matching with a cylindrical hole or a spherical joint, and the driving lever is pivoted on the backplate of brake with a cylindrical pin or a elliptical pin matching with a cylindrical hole or a spherical joint. The automatic clearance adjusting mechanism is fixed on the backplate and interconnected with the driving lever.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: July 18, 2006
    Assignee: Tsinghua University
    Inventors: Zhenhua Lü, Wenming Han
  • Patent number: 7040722
    Abstract: The invention relates to a method for redundantly estimating, i.e. by various sub-methods, the risk of lateral overturn of a vehicle. One sub-method involves estimating the risk of overturn according to the actual braking state of the vehicle—braking or strong braking, or not braking or slight braking—by monitoring the rotational speed behavior of the wheels on the inside of the turn. Another sub-method involves pre-calculating the rolling motion of the vehicle about the longitudinal axis thereof over a short time span of, for example, 0.5 s to 1.5 s on the basis of instantaneous movement parameters and assessing the risk of overturn on the basis of the anticipated rolling motion.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: May 9, 2006
    Assignee: Knorr-Bremse Systeme Fuer Nutzfahrzeuge GmbH
    Inventors: Gergely Szabo, Tamás Dohany, Valér Merza
  • Patent number: 7021609
    Abstract: A gas spring has a cylinder body, a rod member internally slidably fitted in the cylinder body, and a gas chamber which is formed inside the cylinder body and filled with compressed gas. The seal members for sealing between the cylinder body and the rod member are disposed at both sides of the gas chamber, while ring members for partitioning the gas chamber are disposed at the end portions of the gas chamber close to the seal members, and accordingly, annular grease chambers for grease between the seal member and the ring member are formed, and it is possible to prevent grease shortage by the grease in the grease chambers.
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: April 4, 2006
    Assignee: Pascal Engineering Corporation
    Inventor: Seiji Kimura
  • Patent number: 7014178
    Abstract: A hydraulically damping bush bearing is presented, in which an inner rubber mount, which comprises an essentially cylindrical or nearly cylindrical inner part (1) with an axial through hole (2), an outer sleeve (3) surrounding the inner part (1) as well as an elastomeric damping member (4), which is arranged between the inner part (1) and the outer sleeve (3) and is connected to them by vulcanization, is surrounded at its axial ends by chambers (5, 5?) for receiving a fluid damping agent, wherein the chambers (5, 5?) are formed by a hydraulic area, which is arranged separately around the rubber mount and which comprises a rigid channel carrier (6) pushed over the outer sleeve (3) of the rubber mount with a channel (7) for the flow-conducting connection of the chambers (5, 5?), an outer bush (8) supported axially on the channel carrier, and means (9, 9?) arranged axially on both sides of the rubber mount for closing the bush bearing, wherein the means (9, 9?) consist in their radially outer area of an elastome
    Type: Grant
    Filed: April 9, 2002
    Date of Patent: March 21, 2006
    Assignee: ZF Lemförder Metallwaren AG
    Inventors: Andreas Vossel, Andreas Rodenberg
  • Patent number: 7011379
    Abstract: A control circuit for a controllable electric solenoid valve of a brake system of a motor vehicle is described, in which the actual values of a controlled variable (f(t)), e.g., the vehicle deceleration, a wheel slip, a driving speed, an angle of rotation or the like are returned to a predetermined tolerance band. The actual value of the controlled variable is measured continuously and compared with the predetermined tolerance band, which is stored in an EEPROM, for example. If the actual value of the controlled variable leaves the predetermined tolerance band (22), a correction device (15) intervenes and returns the actual value to the predetermined tolerance band by increasing or decreasing the trigger current for the solenoid valve (1).
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: March 14, 2006
    Assignee: Robert Bosch GmbH
    Inventors: Thomas Rader, Alexander Haeussler, Frank Kaestner
  • Patent number: 6988718
    Abstract: A wheel-guiding spring strut, optionally with internal level regulation, including a shock strut, optionally constructed as a self-pumping hydropneumatic spring strut, a piston rod supported at an upper supporting bearing, and a coil spring which is fixed between the spring strut and the supporting bearing at a spring plate. The spring plate that cooperates with the end of the piston rod is arranged so as to be cardanically movable relative to the piston rod.
    Type: Grant
    Filed: July 14, 2000
    Date of Patent: January 24, 2006
    Assignee: Mannesmann Sachs AG
    Inventors: Hans-Dieter Eulenbach, Hubert Beck, Albrecht Nachtigall
  • Patent number: 6984002
    Abstract: A brake hydraulic pressure generator is proposed in which the brake stroke fluctuate less when the amount of brake fluid consumed in the wheel brakes fluctuates. Even when the brake pedal force is increased after the brake assisting force has reached its maximum, the reaction force to the pedal force as well as the master cylinder pressure increases corresponding to the increased pedal force. The brake hydraulic pressure generator has a control valve including a spool and a cylinder and adapted to control the hydraulic pressure in a dynamic pressure chamber to a value corresponding to the stroke of an input shaft. It further includes a pressure sensor, a solenoid valve and a fluid chamber.
    Type: Grant
    Filed: October 20, 2003
    Date of Patent: January 10, 2006
    Assignee: Advics Co., Ltd.
    Inventors: Koichi Hashida, Haruo Arakawa
  • Patent number: 6984001
    Abstract: A braking system includes at least one power supply, and first and second brake component each at least partially operated by electrical power. First and second power supply networks electrically connect the power supply with the first brake component and the second brake component respectively. An auxiliary power supply link is activatable to electrically connect the first brake component and the second brake component when a failure occurs in one of the first power supply network or the second power supply network, the auxiliary power supply link adapted to transmit the electrical power between the first brake component and the second brake component when the failure occurs.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: January 10, 2006
    Assignee: Haldex Brake Products AB
    Inventor: Peter Nilsson
  • Patent number: 6978866
    Abstract: Wheel-bearing and brake-disk unit designed such that forces (deformations) when the rim is being screwed on largely avoid resulting axial run-out in the brake disk. The bearing flange to which the rim and pot-shaped part of the brake disk are attached has first fastening openings and a larger diameter in the regions of the first openings and a smaller diameter between adjacent first openings. The pot-shaped part of the brake disk has second fastening openings and a larger diameter in the regions of the second openings and a smaller diameter between adjacent second openings.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: December 27, 2005
    Assignee: FAG Kugelfischer AG
    Inventors: Peter Niebling, Heinrich Hofmann, Jens Heim, Horst Masuch
  • Patent number: 6976564
    Abstract: A quick change shock absorber for providing the quick and easy removal of a shock absorber from a fixture of an industrial machine. The quick change shock absorber provides a housing having a bore adaptable to hold a fluid therein. A piston is slidably disposed within the bore of the housing and is engageable with a driver for movement between an extended position, wherein the piston has a portion extending outwardly from the housing, and a retracted position, wherein the piston is disposed within the housing. A connecting member extends from the housing and is engageable with a fixture having a bore therein for releasably connecting and locating the housing to the fixture.
    Type: Grant
    Filed: December 27, 2004
    Date of Patent: December 20, 2005
    Assignee: Ace Controls, Inc.
    Inventors: Richard T. Mitera, Robert Heideman
  • Patent number: 6974002
    Abstract: An adjustable shock absorber for applying a force to a moving member so as to decelerate the member. The present invention provides a cylindrical outer tube having a plurality of circular, angular grooves formed in the inner surface of the tube. A cylindrical inner tube is rotatably disposed within the outer tube. A piston is slidably disposed within the inner tube and is engageable with the moving member. The piston moves between a compressed position and an extended position. The inner tube has a plurality of apertures extending therethrough and fluidly communicatable with the grooves in the outer tube. A screw thread is formed in the outer surface of the inner tube and is fluidly communicatable with the grooves in the outer tube. The inner tube and the outer tube rotate with respect to each other to adjust the level of fluid communication between the rearward end and the forward end of the shock absorber to adjust the level of force applied to the moving member.
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: December 13, 2005
    Assignee: Ace Controls, Inc.
    Inventor: Robert Heideman
  • Patent number: 6974000
    Abstract: An apparatus comprising a frame; a member movable relative to said frame; a damping device interconnected between the frame and the movable member; a controller for activating the damper to generate a damping condition at a predetermined member operating condition; and system for activating the damping device at a predetermined operating condition of the moving member during a loss of power to the apparatus. The damping device may comprise a field controllable damper that includes a volume of field controllable fluid, which may in turn comprise magnetorheological fluid for example. The rheology of the field controllable fluid is effected during the application of the field.
    Type: Grant
    Filed: February 20, 2002
    Date of Patent: December 13, 2005
    Assignee: Lord Corporation
    Inventors: J. David Carlson, Michael J. Chrzan, Lynn C. Yanyo, Thomas Peuker
  • Patent number: 6971489
    Abstract: A motor and brake assembly having a disengaging mechanism for use with RV's are disclosed. The assembly includes a motor and a disengaging mechanism that is mounted thereon. The disengaging mechanism includes a motor mount comprised of a cylindrical piece with a plurality of holes disposed on the periphery of an outer flange of the cylindrical piece. The cylindrical piece extends over the barrel of the motor and is secured to the barrel with a plurality of screws. Through manipulation of the cylindrical piece, the user can selectively engage or disengage the brake from the motor.
    Type: Grant
    Filed: November 21, 2003
    Date of Patent: December 6, 2005
    Assignee: RBW Industries, Inc.
    Inventor: Raymond Willis Blodgett, Jr.
  • Patent number: 6971488
    Abstract: A brake rigging comprising first and second brake beams. A brake shoe assembly including a brake shoe adjacent each end of brake beams. A first force transfer mechanism connected intermediate first and second ends thereof to the first brake beam for moving a brake shoe into engagement with confronting wheels during braking. A second force transfer mechanism connected intermediate first and second ends thereof for moving brake shoes into engagement with confronting wheels during braking. A first force transmitting device engageable with such second brake beam for rotating such second force transfer mechanism. An adjustable length second force transmitting device having one end connected to the first force transfer mechanism and another end connected to the second force transfer mechanism and an apparatus engageable with such second force transmitting device and a portion of such brake rigging for changing a length of the second force transmitting device.
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: December 6, 2005
    Assignee: Westinghouse Air Brake Technologies Corporation
    Inventors: Michael E. Ring, James M. Zemyan
  • Patent number: 6971726
    Abstract: A system is presented for controlling the stability of a vehicle. The system includes a controller using a slip parameter GOPT corresponding to a predetermined value of the coefficient of friction ? or a controller maintaining the functioning of the tire at an optimal value ?OPT of the drift angle corresponding to the maximum value of the draft thrust Ftarget. The controller performs the following operations (where X is either the slip G or the drift angle ?, and Y is either ? or F). Estimations or measurements are determined for at least one pair of values (Xi, Yi). The corresponding values of the slope ?i are determined for the straight line passing through the origin (Xi, Yi). Coefficients Ap are calculated by direct calculation or by a regression from a sufficient number of pairs with (?i, Xi) so as to model a variation curve ?i=f(Xi, Ap). A target value XTarget is calculated by using a predetermined invariant “Invt”.
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: December 6, 2005
    Assignee: Michelin Recherche et Technique S.A.
    Inventors: Georges Levy, Nicolas Fangeat
  • Patent number: 6971723
    Abstract: A release graduating proportioning valve for a rail car brake system having a brake pipe, a brake cylinder, and a load sensor valve. The release graduating proportioning valve has a conventional proportioning piston with a control volume communicating on a first side thereof and a second volume communicating on an opposite side thereof. A graduated release valve member, which can be incorporated into the top of the proportioning valve, is interposed between the control volume and atmosphere for providing a graduated release of brake cylinder pressure via the control volume. The graduated release valve member is activated by movement of the proportioning piston.
    Type: Grant
    Filed: January 3, 2005
    Date of Patent: December 6, 2005
    Assignee: Wabtec Holding Corp.
    Inventors: Thomas H. Engle, John Carroll, Gary Sich
  • Patent number: 6968931
    Abstract: The present invention relates to an improved shock absorber with guiding system for, for example, racing and Formula cars and such, due to which larger horizontal bend powers F can be taken without considerable wear and further problems, in which the shock absorber consists of a telescopic first or upper tube (15) and second or bottom tube (16) with a damping, for oil bored piston (17), in which the sliding into each other of the mentioned tube parts is executed by means of roller bearings (22, 23), which are adjusted to the radius of the concerned tube, through which in a surprisingly inventive way a very high-quality spring and shock absorber is created for the Formula cars.
    Type: Grant
    Filed: May 22, 2002
    Date of Patent: November 29, 2005
    Inventor: Marius Jacobus Huisman