Patents Examined by Richard Potosnak
  • Patent number: 4964625
    Abstract: A hydraulic damper has an oil lock mechanism for preventing bottoming when the hydraulic damper is fully compressed. The hydraulic damper also includes an outer tube, an inner tube, a cylinder movable with the inner tube, a piston rod movable with the outer tube, a piston fixed to a distal end of the piston rod, and a coil spring disposed in the inner tube. The oil lock mechanism comprises an oil lock piece mounted on an upper end of the cylinder, and an oil lock tube disposed concentrically between the cylinder and the inner tube and having a larger-diameter portion which can be spaced from the oil lock piece when the hydraulic damper is extended and a smaller-diameter portion which can be held in sliding contact with the oil lock piece when the hydraulic damper is compressed.
    Type: Grant
    Filed: July 12, 1988
    Date of Patent: October 23, 1990
    Assignee: Kabushiki Kaisha Showa Seisakusho
    Inventor: Sadao Kawamura
  • Patent number: 4964623
    Abstract: A fluid filled resilient bushing assembly for vibration control in the radial and axial directions or combinations thereof, particularly adapted for use in a suspension system, which comprises an elongate inner rigid member and an elongate outer rigid sleeve member, a resilient member interposed between the inner and outer members. The resilient member together with the outer member defines two circumferentially and axially-spaced chambers and a restricted passageway connecting the chambers. The chambers and passageway contain an incompressible fluid. By axially and circumferentially spacing the chambers, the desired damping in the axial and radial direction is obtained.
    Type: Grant
    Filed: December 7, 1987
    Date of Patent: October 23, 1990
    Assignee: Lord Corporation
    Inventor: Richard P. Thorn
  • Patent number: 4901942
    Abstract: A clamping brake for selectively braking each thread in a warp mill having a plural number of threads includes first and second brake disks which can move together to brake a thread in a thread guide positioned between the brake disks. The second brake disk is moved by pneumatic fluid, opposed by either gravity or a spring force.
    Type: Grant
    Filed: September 3, 1987
    Date of Patent: February 20, 1990
    Assignee: Norddeutsche Faserwerke GmbH
    Inventors: Jurgen Beitz, Karl-Heinz Erren, Gunter Mobius
  • Patent number: 4893565
    Abstract: A mobile track working machine comprises a machine frame and an apparatus for lifting and laterally moving the track in a switch section, which apparatus comprises a vertically and laterally movable tool carrier frame, power-actuated drives linking the tool carrier frame to the machine frame for vertically and laterally moving the tool carrier frame with respect to the machine frame, a pair of flanged wheels supporting the tool carrier frame for mobility on the track, a respective one of the flanged wheels being associated with each track rail and serving as track lining element, and a respective rail gripping device mounted on the tool carrier frame for engagement with the field side of the associated rail and including a first rail gripping hook transversely and vertically adjustable for engagement with the associated rail and a rail gripping member of a different type for subtending the rail head at the field side of the associated rail.
    Type: Grant
    Filed: May 22, 1989
    Date of Patent: January 16, 1990
    Assignee: Franz Plasser Bahnbaumaschinen-Industriegesellschaft m.b.H.
    Inventors: Josef Theurer, Wilhelm Praschl
  • Patent number: 4892173
    Abstract: A caliper is mounted on an axle casing of a rail vehicle by a first bracket and by a second bracket positioned between the disc and the first bracket. One of the brackets is detachably mounted on the casing and is removable to permit the caliper to be removed by movement in a generally axial direction. To permit this to happen the caliper and the other detachable bracket both lie outside the projected peripheral edge of a flange on the axle on which a wheel is mounted.
    Type: Grant
    Filed: November 4, 1988
    Date of Patent: January 9, 1990
    Assignee: Lucas Industries Public Limited Co.
    Inventor: Anthony W. Harrison
  • Patent number: 4892174
    Abstract: The present invention provides a nutation damper having a hollow ring-shaped container installed concentrically to the axis of spin of a spinning body, with a viscous fluid sealed inside, and partially filling the container so as to leave a gap. The volume of the viscous fluid is determined as less than or equal to 1/2 of the volume enclosed by the outer wall of the container. It can provide a nutation damper of simple construction which can damp nutation arising in high-speed spinning bodies and allow these spinning bodies to spin stably.
    Type: Grant
    Filed: July 21, 1988
    Date of Patent: January 9, 1990
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Shigeru Takekado
  • Patent number: 4890822
    Abstract: A suspension system according to the present invention comprises a cylinder assembly, which includes a cylinder and a rod fitted therein for axial reciprocation. An oil chamber containing oil and a gas chamber containing gas are defined inside the cylinder assembly. A damping-force generating mechanism is provided in the oil chamber, whereby a damping force is applied to the reciprocation of the rod. A bellows is contained in the cylinder assembly. The bellows includes an oil-resistant body made of an elastomer, and a gas-barrier film made of a material impermeable to gas and formed on the surface of the body. The oil and gas chambers are isolated completely from each other by the bellows.
    Type: Grant
    Filed: October 6, 1988
    Date of Patent: January 2, 1990
    Assignee: NHK Spring Co., Ltd.
    Inventors: Nobuya Ezure, Ichiro Takadera, Kohei Taguchi
  • Patent number: 4889374
    Abstract: A two-stage automobile bumper comprising two buffers set in two inner supporting frames which are supported in two outer supporting frames welded at the front of the chassis and a bumper fixed at the front end of the buffers. When the bumper receives a shock, pins combining the buffers with said inner supporting frames are to be cut into two pieces and coiled springs are to be compressed to absorb the shock force.
    Type: Grant
    Filed: June 16, 1988
    Date of Patent: December 26, 1989
    Inventor: Sain-Lu Choun
  • Patent number: 4889211
    Abstract: A printing press idle roller braking system is provided with a friction member mounted to the printing press frame for making frictional circumferential contact with an outer circumferential periphery of a cylindrical idle roller to reduce and control the speed of rotation of the cylindrical idle roller to prevent accumulation of ink and lint on the outer circumferential periphery and create tension in the web sheet.
    Type: Grant
    Filed: September 14, 1988
    Date of Patent: December 26, 1989
    Inventor: Sterling R. Carlson
  • Patent number: 4886250
    Abstract: An adjustable coil seat is provided which utilizes the combination of a plurality of parallel rows of sinuous springs which are connected at opposite ends of the frame, at least one row of tapered conical coil springs in transverse relation to the sinuous springs and positioned in supporting relationship under the sinuous springs at a location between the ends of the sinuous springs, and a rigid cross-support beam structure which supports the bottom end of the tapered coiled springs. The cross support structure may be of adjustable height to vary pretension of the spring mechanism.
    Type: Grant
    Filed: August 7, 1987
    Date of Patent: December 12, 1989
    Assignee: Schweiger Industries, Inc.
    Inventor: Thomas H. Lucas
  • Patent number: 4883149
    Abstract: A braking member for a brake of the liquid cooled type is provided on at least one side with an annular reservoir for cooling liquid, and passages are arranged to control the release of liquid from the reservoir to braking surfaces in response to centrifugal force.
    Type: Grant
    Filed: July 28, 1988
    Date of Patent: November 28, 1989
    Assignee: Lucas Industries public limited company
    Inventors: Roy Campbell, Anthony G. Price, Andrew P. Green
  • Patent number: 4875664
    Abstract: For use, for example, in mounting a personnel accommodation module on an offshore drilling rig to attenuate the transmission of vibration use is made of an anti-vibration mounting comprising a rigid fluid container having an opening, a rigid support member for closing at least a part of that opening, a flexible seal comprising at least one element of elastomeric material arranged to extend between confronting surfaces of the fluid container and rigid support member thereby to form a fluid chamber within the anti-vibration mounting, liquid supply passage for the flow of liquid to and from that chamber, and gas supply passage for the flow of gas to and from that chamber, the liquid and gas supply passage being independent of one another whereby the quantities of liquid and gas within the chamber may be varied independently by flow through the passage.
    Type: Grant
    Filed: March 31, 1987
    Date of Patent: October 24, 1989
    Assignee: Dunlop Limited a British Company
    Inventor: Alan F. Moore
  • Patent number: 4875560
    Abstract: A damping force adjustable hydraulic shock absorber includes a piston rod projecting from a cylinder and an actuator for adjusting the level of damping force generated in the shock absorber, the actuator having a bottom portion and an axially extending outer peripheral portion. The shock absorber further includes a casing and retaining device. The casing has a bottom portion secured to the projecting end portion of a piston rod, a first rising portion which extends upward from the outer peripheral edge of the bottom portion, a flange portion which extends outward from the upper end of the rising portion and on which is placed the bottom portion of the actuator, and a second rising portion which extends upward from the outer edge of the flange portion, the second rising portion receiving at least a part of the outer peripheral portion of the actuator to prevent horizontal movement of the actuator.
    Type: Grant
    Filed: September 17, 1987
    Date of Patent: October 24, 1989
    Assignee: Tokico Ltd.
    Inventor: Tomio Imaizumo
  • Patent number: 4874196
    Abstract: A truck cover having an improved telescopic arm assembly for drawing a cover across an open topped truck body or other vessel or container. The assembly is powered by a pneumatic, hydraulic or other power source and comprises a pair of pivoting telescopic arms motivated by actuators The activators cause the telescopic arms to move pivotally from one end of the container to the opposite end and during the pivotal movement to cause the telescopic arms to retract as they move to a vertical position and to extend as they move from the vertical position to the opposite end of the container. The extension and retraction of the telescopic arms during pivotal movement from one end of the container to the opposite end causes a flexible cover carried by the upper ends of the telescopic arms to be drawn across the container in a low trajectory resulting in improved ease and safety of operation and reduced opportunity for damage to the flexible cover.
    Type: Grant
    Filed: June 18, 1987
    Date of Patent: October 17, 1989
    Assignee: Pioneer Consolidated Corp.
    Inventors: Harvey R. Goldstein, Edward N. Haddad, Jr.
  • Patent number: 4872537
    Abstract: A piston and cylinder arrangement, which includes a piston and piston rod assembly and which is filled with a damper-fluid, is attached to an auxiliary tank by a flow channel. A first restriction in the piston and piston rod assembly substantially controls the low velocity flow of the damper fluid during extension strokes and a second restriction in the piston and piston rod assembly substantially controls high velocity flow of the damper fluid during the extension strokes. A third restriction in the flow channel substantially controls the low velocity flow of the damper-fluid during compression strokes, and a fourth restriction in the flow channel substantially controls the high velocity flow of the damper-fluid during the compression strokes. Substantially unrestricted flow of the damper-fluid through the piston and piston rod assembly is permitted during the compression strokes, and substantially unrestricted flow of the damper-fluid through the flow channel is permitted during extension strokes.
    Type: Grant
    Filed: June 6, 1988
    Date of Patent: October 10, 1989
    Inventor: Brian Warner
  • Patent number: 4871151
    Abstract: A fluid-filled resilient bushing is disclosed, which includes a resilient member interposed between inner and outer sleeves, and an elastically yieldable partition member disposed in an axial void which is formed in the resilient member and extends over an entire axial length of the same. The resilient member and the partition member cooperate with the outer sleeve to fluid-tightly define a pressure-receiving chamber and an equilibrium chamber, which are disposed opposite to each other in a vibration-input direction in which the bushing receives a vibrational load. The chambers are filled with incompressible fluid and communicate with each other through an orifice. The inner and outer sleeves are disposed in eccentric relation with each other in the vibration-input direction.
    Type: Grant
    Filed: March 24, 1988
    Date of Patent: October 3, 1989
    Assignee: Tokai Rubber Industries, Ltd.
    Inventor: Ryouji Kanda
  • Patent number: 4869472
    Abstract: This invention is directed to an improved device for connecting an elastic suspension leaf arranged between a load and a carrier, particularly of a vehicle, to the walls or the like and to the chassis. The suspension leaf comprises a composite material having in its vertical plane of symmetry a thickness increasing from the chassis to the end support of the wheel, its cross-section remaining approximately constant. At least one device for connecting to the chassis includes a lower part which retains the leaf and which has a trapezoidal shape in projection in a horizontal plane and a U-shaped cross-section in a vertical plane, and a semi-cylindrical upper part possessing an axial bore which receives a shock-absorbing device for fastening the device to the assembly. The dimensions of the lower part ensure that the part fits onto the gradually varying shape portion of the leaf at the fastening points of the leaf.
    Type: Grant
    Filed: June 6, 1988
    Date of Patent: September 26, 1989
    Assignee: Bertin & Cie.
    Inventor: Louis de Goncourt
  • Patent number: 4869350
    Abstract: The wear indicator comprises essentially a coaxial cable (4, 5) of which the conducting core (4) and the conducting sleeve (5) are connected electrically by a socket (6, 6', 6", 6'41 ). One bared end of the core (4) is disposed on a wear limit plane of a lining forming part of a friction member. A rotating member, disc or drum then cuts the end of the core when the lining reaches its permissible wear limit.
    Type: Grant
    Filed: July 5, 1988
    Date of Patent: September 26, 1989
    Assignee: Bendix France
    Inventors: Eric Fargier, Jean-Claude Mery
  • Patent number: 4867283
    Abstract: A slack adjustable operator for a spring applied disc brake has a spring motor operating a disc brake through a tubular pushrod having an over-running clutch permitting axial movement of the pushrod in a brake application direction, but not in a brake releasing direction. The over-running clutch operates in longitudinal load roller slots in the outer periphery of the pushrod and having a ramp load roller retaining ring slidable laterally on the outer periphery of the pushrod, the retainer ring being retained in a stepped bore of a housing to be laterally operable, along with longitudinal operation of the pushrod for brake release only to an extent to provide normal clearance for pads of the brakes, this limitation being effective to initiate threaded slack adjustment of the pushrod to compensate for wear of the brake pads.
    Type: Grant
    Filed: June 22, 1988
    Date of Patent: September 19, 1989
    Assignee: General Signal Corporation
    Inventor: Michael J. Dill
  • Patent number: 4863147
    Abstract: This is a suspension system for use on a vehicle between an axle and a load carrying body. It includes a plunger tube which is attached to the axle of the vehicle. The plunger tube extends upwardly into the annulus between an outer cylindrical housing, which is secured to the frame of the vehicle, and an interior piston rod. There is a main cavity within the piston rod and an annular cavity between the piston rod and the plunger tube. At least one orifice extends through the piston rod to permit fluid communication between the main cavity within the piston rod and the annular cavity. A second passage therebetween includes a ball check valve which permits flow of fluid only from the main cavity to the annular cavity. A movable orifice metering ring can be raised or lowered from the exterior of the suspension system to vary the size of the orifice between the main cavity and the annular cavity.
    Type: Grant
    Filed: June 13, 1988
    Date of Patent: September 5, 1989
    Assignee: Unit Rig, Inc.
    Inventors: Frederick W. Loeber, Richard L. Hoffelmeyer, Jeffrey A. Jackson