Bizarre Patents
A method for inducing cats to exercise consists of directing a beam of invisible light produced by a hand-held laser apparatus onto the floor or wall.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8025135 | Hydraulic damping device for drawer A hydraulic damping device for drawer includes a cylinder holding a hydraulic fluid, a piston rod moving in and out of the cylinder and having a pin at one end inside the cylinder, a rigid valve block affixed to the inner end of the pin of the piston rod and having ... | 09/27/2011 |
| 8016088 | Damping mechanism A damping mechanism (1) that generates a damping force in response to a liquid flow between a first liquid chamber (R1) and a second liquid chamber (R2) comprises a partitioning member (2) separating the first liquid chamber (R1) a... | 09/13/2011 |
| 7721856 | Vibration damper having an amplitude-selective damping device A vibration damper having a sensitive response behavior at very low amplitudes comprises a separating piston being disposed inside a bypass so as to move axially freely. The separating piston divides the bypass into two chambers mutually sealed from one another. Two... | 05/25/2010 |
| 7628257 | Hydraulic damper for drawer A hydraulic damper includes a cylinder holding a hydraulic fluid, a piston rod movable in and out of the cylinder, a rigid valve block coupled to the piston rod and having equiangularly spaced through holes, a piston coupled to the piston rod and having a plurality ... | 12/08/2009 |
| 7600617 | Industrial shock absorber for use in a conveyor system An apparatus for controlling relative movement between two interconnected bodies includes a first end cap, a second end cap having an opening, a sleeve interconnecting the end caps to define a chamber between the sleeve and the end caps, a piston assembly including ... | 10/13/2009 |
| 7458448 | Hydraulic shock absorber A hydraulic shock absorber in which the flow of hydraulic fluid induced in each of extension and compression hydraulic fluid passages, by sliding movement of a piston, is controlled by a main disk valve to generate damping force. The valve opening pressure of the ma... | 12/02/2008 |
| 7322449 | Hydraulic shock absorber A piston connected to a piston rod is fitted into a cylinder in which a hydraulic fluid is sealably contained. A flow of the hydraulic fluid is generated in an extension-side fluid passage and a compression-side fluid passage according to a sliding motion of the pis... | 01/29/2008 |
| 7269893 | Tool for piercing nut A tool for piercing nuts that includes a die part, a punch part and a piercing nut feeder incorporated into the punch part. The piercing nut feeder is adapted to feed piercing nuts into a piercing nut holder in the punch part so that these nuts, when the punch part ... | 09/18/2007 |
| 7240606 | Crimped piston to rod joint A method for assembling a piston on a rod, and resultant piston and rod assembly, uses one or more lock rings that are mechanically deformed radially inwardly into respective locking grooves in the rod, thereby axially locking the lock ring to the rod. The lock ring... | 07/10/2007 |
| 7213689 | Shock absorber for a remote-controlled model car A shock absorber for a remote-controlled model car includes a sealing member fixed on the topside of a piston. The sealing member has two opposite flexible portions respectively matching with the flow-guiding holes of the piston, with flow gaps formed between the fl... | 05/08/2007 |
| 7172057 | Vibration damper with amplitude-dependent damping force Vibration damper comprising a piston rod, which is guided with freedom of axial movement in a damping medium-filled cylinder and which carries a piston, which divides the cylinder into two working spaces. At least one of the two working spaces has a flow connection ... | 02/06/2007 |
| 7104180 | Low noise linear actuator A linear actuator system including a cylinder, a piston slidably received within the cylinder and defining a piston chamber and a rod chamber in the cylinder, wherein the piston includes a plurality of orifices therethrough that place the piston chamber and the rod ... | 09/12/2006 |
| 7104369 | Vibration damper with stroke-dependent damping force A piston rod with a piston is installed with freedom of axial movement in a damping medium-filled cylinder, where, as a function of the stroke position of the piston, a bypass connects the two working spaces separated from each other by the piston. The piston has at... | 09/12/2006 |
| 7097016 | Fulcrum blow off valve for use in a shock absorber A shock absorber includes a rebound valve assembly which performs the flexing disc function normally required for allowing the passage of fluid from one side of a piston assembly to the opposite side during the stroke of the shock absorber. The rebound valve assembl... | 08/29/2006 |
| 7040468 | Hydraulic shock absorber A hydraulic shock absorber includes a cylindrical housing within which a piston assembly is slidably received. The piston assembly includes a piston element connected to a piston rod and adapted to divide an interior of the housing into compression and rebound chamb... | 05/09/2006 |
| 6988600 | High frequency dampening apparatus A high frequency dampening apparatus for dampening the travel of a high frequency cycling driver. The present invention provides an enclosed housing having a fluid disposed therein. A piston rod is partially disposed within the housing and is engageable with a high ... | 01/24/2006 |
| 6974005 | Vibration damper with overload protection Vibration damper comprising a damping medium-filled pressure tube, in which a displacer is installed, where a damping device produces a damping force as a function of the movement of the displacer. A damping force-limiting device, independently of the flow of the da... | 12/13/2005 |
| 6966411 | Valve structure of hydraulic shock absorber for vehicle In a valve structure of a hydraulic shock absorber for a vehicle structured by laminating a first leaf valve, a small-diameter leaf valve and a plurality of second leaf valves, an inner leaf valve is provided between a plurality of second leaf valves. An annular out... | 11/22/2005 |
| 6959906 | Blow-off valve for a hydraulic dashpot A blow-off valve for a hydraulic dashpot comprising a fluid charged cylinder (1) and a piston (3) that travels back and forth therein on the end of a piston rod. The piston partitions the cylinder into two compartments (6 & 7) and is prov... | 11/01/2005 |
| 6918473 | Stroke dependent bypass A shock absorber has a pressure tube with a piston assembly slidably disposed within the pressure tube and attached to a piston rod. The piston assembly divides the pressure tube into an upper working chamber and a lower working chamber. The piston assembly includes... | 07/19/2005 |
| 6899207 | Extra support area for valve disc A valve for controlling fluid flow through a passage defined by a valve body or a piston includes a valve disc which abuts the valve body or the piston. The valve body or the piston defines a first land for supporting the valve disc, a second land for supporting the... | 05/31/2005 |
| 6860370 | Controllable damping force hydraulic shock absorber A piston having a piston rod connected thereto is slidably fitted in a cylinder in which a hydraulic fluid is sealably contained. Extension-stroke and compression-stroke pilot type damping force control mechanisms are provided in the piston. Check valves are provide... | 03/01/2005 |
| 6837344 | Piston and rod assembly for air-actuated variable damping A damper includes a piston that carries a relatively compact control valve for controlling fluid flow through the piston. The control valve provides a variable amount of damping by regulating damper fluid flow between the extension chamber and the compression chambe... | 01/04/2005 |
| 6681906 | Device for increasing shock absorption A device for increasing shock absorption by hydraulic means in the terminal section (19 & 27) of hydraulic shock absorbers with a shock-absorption piston (3) that divides the shock absorber into two compartments. The width of a channel that conveys hydrau... | 01/27/2004 |
| 6644445 | Floating port blocker A shock absorber includes a piston assembly having a compression valve assembly and a rebound valve assembly. One of the valve assemblies includes a free floating port blocker disc disposed in a pressure chamber. The blocker disc allows for the low speed ... | 11/11/2003 |
| 6581734 | Damping valve for a shock absorber Damping valve comprising a damping valve body with at least one flow-through channel, the outlet of which is covered at least by an elastic valve disk, which is pretensioned against the damping valve body at least indirectly by a spring, where at least on... | 06/24/2003 |
| 6474454 | Damping force control type hydraulic shock absorber A pilot chamber is formed at the back of a disk valve for each of the fluid flow systems for the extension and compression strokes. Damping force in a low piston speed region is controlled with a pressure control valve. The valve opening pressure of the d... | 11/05/2002 |
| 6390257 | Suspension damper having piston plate with coined, continuously curved bypass A suspension damper or shock absorber for a vehicle suspension system includes a piston assembly across which damping fluid is metered to control relative movement between the vehicle body and chassis. The piston assembly includes a piston plate in which ... | 05/21/2002 |
| 6371262 | Damping force control type hydraulic shock absorber The flow of a hydraulic fluid, which occurs under a sliding movement of a piston in a cylinder, is directly controlled by virtue of an extension-stroke pressure control valve and a compression-stroke pressure control valve. At the same time, the pressure ... | 04/16/2002 |
| 6371264 | Fulcrum blow off valve for use in a shock absorber A shock absorber includes a rebound valve assembly which performs the flexing disc function normally required for allowing the passage of fluid from one side of a piston assembly to the opposite side during the stroke of the shock absorber. The rebound va... | 04/16/2002 |
| 6336536 | Reversing valve with a passage which is dependent on the direction of flow Disclosed is a vibration damper with a damping valve having a reversing valve. The reversing valve has valve body having at least one passage opening with a cross section therein; a valve plate at least partially covering the passage opening and a reversi... | 01/08/2002 |
| 6264015 | Continuously variable single-tube shock absorber with bidirectional control valve A continuously variable single-tube shock absorber operating according to the skyhook principle and having bidirectional control valves comprising a working cylinder, a piston with piston rod which is movable therein, openings cut out in the piston, sprin... | 07/24/2001 |
| 6247563 | Piston with floating valve for hydraulic damper tube, especially one of the monotube type The piston with a valve for a hydraulic damper tube, comprises a piston body (116) having a fluid passage (112) interacting with a floating valve element (115) for controlling in both directions the amount of fluid flowing through the passage. The floatin... | 06/19/2001 |
| 6230858 | Internally slotted orifice disc for low speed control in automotive dampers A valve assembly for a fluid vehicle damper having a cylinder with a valve body is provided. The valve body has an outer surface adjacent to an interior wall of the cylinder and includes first and second opposing surfaces. The valve body defines first and... | 05/15/2001 |
| 6220409 | Stroke dependent bypass A shock absorber has a pressure tube with a piston assembly slidably disposed within the pressure tube and attached to a piston rod. The piston assembly divides the pressure tube into an upper working chamber and a lower working chamber. The piston assemb... | 04/24/2001 |
| 6216831 | Frictionless hydraulic damper and damper-snubber A damper including a cylinder, opposite end walls in the cylinder, an elongated shaft mounted for axial movement in seals in the end walls, a piston head on the shaft between the end walls, fluid-tight bellows mounted in sealed relationship between the sh... | 04/17/2001 |
| 6148853 | Damper valve for hydraulic power steering device A damper valve for a hydraulic power steering device is disposed on a hydraulic oil circuit for connecting an oil passage changing-over valve in a gear box and left and right oil chambers of a power cylinder, and is provided with a partition plate member ... | 11/21/2000 |
| 6148969 | Frequency dependant 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 series of extension passages extend through the piston and are always left open. A ... | 11/21/2000 |
| 6116388 | Shock absorber A shock absorber for a motor vehicle includes a compression stoke valve having one or more deflectable discs mounted on the piston on the rebound chamber side and a rebound stroke valve having one or more deflectable discs mounted on the piston on the com... | 09/12/2000 |
| 6079440 | Reversing valve with a cross section which is dependent on the direction of flow A reversing valve having a valve body which separates two working spaces which are filled with a fluid. Passage openings are arranged in the valve body and are covered at least partially by a number of valve plates. The cross sectional passage of the pass... | 06/27/2000 |
