Class 188/282.7 - Ball-type valve

Subclass of Class 188 - Brakes
Definition: Valved piston in which the size varying element is a sphere,
No. of patents: 27
Last issue date: 02/28/2012

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Number	Title	Issue Date
8123005	End-stop damper An end-stop damper including a damper body in the form of a cylinder, wherein a piston is guided so that it is displaceable in the cylinder receiving chamber. An air pressure is formed in the receiving chamber produces a braking force acting on the piston during its...	02/28/2012
7565956	Shock absorber with a damping device A shock absorber has an outer tube, an inner tub, a piston rod, a piston and a damping device. The inner tube is slidably inserted into the outer tube and has an inner space with an inner diameter. The piston is securely mounted on the piston rod, is slidably held i...	07/28/2009
7337885	Telescoping cylinder A telescoping fluid cylinder having an inner rod and outer rod moving between extended and retracted positions. A first piston and second piston move the outer rod and inner rod through the cylinder in which a valve of the first piston provides for independent movem...	03/04/2008
7299907	Hydraulic shock absorber and method A hydraulic shock absorber has an outer body with a central bore. A first piston is telescopingly received in the central bore adjacent a closed end thereof, and has a generally annular shape with an inner surface defining a central piston bore, and an outer surface...	11/27/2007
7134534	Damper for front fork of vehicle A front fork for a vehicle includes an upper front fork tube, a lower front fork tube movably coupled to the upper front fork tube, a fluid contained in the upper and lower front fork tubes, and a damper fixedly sealedly mounted inside the upper front fork tube. The...	11/14/2006
7070028	Frequency dependent damper A gas shock absorber has a pressure tube which defines a working chamber. A piston divides the working chamber into an upper working chamber and a lower working chamber. A flow path extends through the piston to provide fluid communication between the upper and lowe...	07/04/2006
7007588	Device for adjusting the pressure in a hydraulic jack The invention relates to a device for adjusting the pressure in the chambers of a hydraulic jack comprising a hollow valve seat extending substantially longitudinally between two end sections, the body of the valve seat being connected to a source of pressurised flu...	03/07/2006
6969080	Damper for front fork of vehicle A front fork shock-absorbing damper for use in between an upper front fork tube and a lower front fork tube of a vehicle's front fork for producing a damping effect upon movement of the upper front fork tube relative to the lower front fork tube includes a control r...	11/29/2005
6691842	Shock absorber for a radio control model A shock absorber for a radio control model includes a cylinder and a piston reciprocally received in the cylinder. The piston has an annular groove defined in the periphery thereof and dividing the piston into an upper portion and a lower portion. At leas...	02/17/2004
6659239	Shock absorber through the rod damping adjustment A shock absorber is provided that includes a shock absorber body defining a cavity that is at least partially filled with hydraulic fluid. A piston is slidably arranged within the body and separates the cavity into rebound and compression fluid chambers. ...	12/09/2003
6254067	Fluid regulating device for use with a hydraulic cylinder to obtain a variable shock absorbing effect A fluid regulating device includes a regulator housing that confines a valve receiving chamber and a fluid chamber filled with hydraulic fluid. The regulator housing is formed with a fluid opening that is in fluid communication with the valve receiving ch...	07/03/2001
6202807	Speed controlling hydraulic dampener A speed controlling hydraulic dampener comprises a tubular housing defining a closed cylindrical chamber for containing a hydraulic fluid. The chamber containing two separate pistons and piston rods that extend through sealed openings in the ends of the h...	03/20/2001
6182575	Adjustable stop-wagon retarders with locking function for wagons at high speed and disposal methods thereof The invention relates to adjustable stop-wagon retarders with locking function for wagons at high speed and disposal methods thereof, which are suitable for railway marshaling yards or rail lines where it is required to prevent wagons from running away, w...	02/06/2001
5653425	Energy absorbers A railway buffer capsule comprising a hollow cylindrical plunger slidably mounted in a cylinder. The cylinder is closed at one end. The plunger is closed at its outer end, and in its inner end is formed a fixed area orifice of flow restricting dimensions....	08/05/1997
5522482	Suspension control system A suspension control system has a relative displacement sensor for detecting a relative velocity between a vehicle body and a wheel, and a controller which sets a relatively large value as a damping coefficient for the extension stroke of a hydraulic shoc...	06/04/1996
5026248	Hydrodynamic swing damper and tree handling vehicle incorporating the same A swing damper and a swing damper in one or more pivot joints, suspending a work tool such as a grapple from a boom. The swing damper is a hydraulic pivot joint where pivoting at the joint causes movement of a piston, in a closed chamber, that separates t...	06/25/1991
4874066	Variable flow shock absorber and method A shock absorber including a piston with two relatively movable elements defining a variable-sized, fluid-filled space. The size of the space is decreased when subjected to external fluid pressure and fluid flow through the piston is modified in response ...	10/17/1989
4832318	Lifting telescoping tube The invention discloses a lifting telescoping tube which comprises a first tube receiving a pressure liquid, a second tube filled with a pressure gas, a first piston affixed to one open end of the second tube having a first through-passage and a second th...	05/23/1989
4588054	Linear motion damper A linear motion damper is disclosed which comprises a hollow sleeve member, a rod reciprocating within the sleeve member, and a piston adapted to engage a fluid filled cylinder to provide resistance to linear motion by the exertion of lateral fluid pressu...	05/13/1986
4545769	Tilt locking system for boat propellers Two embodiments of hydraulic control systems for outboard drives that permit the motor to pop up when an underwater obstacle is struck and return to its normal condition once the obstacle is cleared under a controlled force. Each embodiment includes a sim...	10/08/1985
4475635	Vortex flow shock absorber with one-way valve A vortex flow shock absorber includes a piston having a vortex chamber therein. The piston communicates with one fluid chamber defined in a absorber cylinder via a vortex chamber and with the other fluid chamber separated from the former by the piston via...	10/09/1984
4445673	Shock absorber and air spring assembly A shock absorber and air spring assembly particularly adapted for use in a tilt cab suspension system. It provides the capability of remotely adjusting the amount of damping of the damper piston on the upstroke and, to a lesser extent, on the down stroke ...	05/01/1984
4419083	Tilt lever returning mechanism for outboard engine A tilting supporting arrangement for an outboard drive unit that permits it to be pivoted from a normal running position to a tilted up position. A tilt stop mechanism is provided for holding the unit in its tilted up position and a tilt locking mechanism...	12/06/1983
4271938	Hydraulic shock absorbing arrangement for pipe conduit systems Hydraulic shock absorbing arrangement for pipe conduit systems including a piston slidably mounted in a liquid-filled cylinder to define spaced chambers. The piston has a rod connected thereto which is slidable in a guide positioned at one end of the cyli...	06/09/1981
4190239	Shock absorber assembly and installation A pneumatic shock absorber comprises a cylinder and a piston defining a pressure chamber in the cylinder. The shock absorber has an inlet passage and an outlet passage which communicate with the pressure chamber. The inlet passage is permanently connected...	02/26/1980
4185356	Door closer A door closer is connected to a door. The movements of the door cause a piston member in the door closer to pump a pressure medium through a flow duct. There is also a flow limiting member influencing at least the speed of the opening movement of the door...	01/29/1980
3939947	Dashpot for either push or pull damping A dashpot is disclosed which can exhibit either push or pull damping depending upon the orientation of the valve members thereof. The dashpot includes a cylinder, a piston sealingly slidable within the cylinder and a piston rod operatively connected to th...	02/24/1976

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Class 188/282.7 - Ball-type valve