Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 7975814 | Method for arranging a separating piston in a cavity and a device with such a separating piston A steering damper system and method of regulating the fluid pressure of such a system are provided. The system can comprise a piston rod, a cylinder, a passage, and a damper portion. The damper portion can comprise a damper cavity, an outer piston, an inner piston, ... | 07/12/2011 |
| 7779974 | Vehicle suspension spring system A vehicle suspension spring system for a vehicle wheel station includes a hydraulic cylinder or strut having a piston which divides the cylinder volume into a main oil volume and an annular oil volume. The main oil volume communicates via a first oil passage with a ... | 08/24/2010 |
| 7568563 | Bicycle damping enhancement system A bicycle shock absorber and methods for differentiating between rider-induced forces and terrain-induced forces includes a first fluid chamber having fluid contained therein, a piston for compressing the fluid within the fluid chamber, a second fluid chamber couple... | 08/04/2009 |
| 7556130 | Track system, and vehicle including the same A track system for providing complementary shock absorbing capability to a primary shock absorbing assembly having a hydraulic path containing fluid. The track system includes a chamber, a damping assembly and an adjusting assembly. The chamber has opposite first an... | 07/07/2009 |
| 7441638 | Front fork A front fork, which is interposed between a vehicle body and an axle to restrain a change in vehicle attitude, comprises a fork body (101) including a reservoir chamber (106) partially filled with gas and performing an expansion and contraction operati... | 10/28/2008 |
| 7438164 | Solenoid actuated continuously variable servo valve for adjusting damping in shock absorbers and struts A shock absorber includes a pressure tube with a piston slidably disposed therein. A separate valve includes a fluid circuit for fluid low in rebound and a fluid circuit for fluid flow in compression. Each fluid circuit includes a variable orifice which allows selec... | 10/21/2008 |
| 7413062 | Electronically controlled frequency dependent damping A gas damper includes a gas pressurized working chamber and valving within the piston to control flow of the gas through the piston. A system is in communication with the working chamber to control the gas pressure within the working chamber in order to control the ... | 08/19/2008 |
| 7413063 | Compressible fluid magnetorheological suspension strut A strut (12) is configured for an active suspension system (142) which provides electronic control for both the force applied by the strut (12) and the dampening characteristics of the strut (12). A compressible fluid (18) is used ... | 08/19/2008 |
| 7377372 | Telescopic fork leg A telescopic fork leg with damping system comprising piston and piston rod arrangements. The arrangements perform longitudinal shift motions in a medium-containing chamber. The chamber is situated in a tubular part belonging to the damping system. The piston rod arr... | 05/27/2008 |
| 7370843 | Retractable load support system A retractable load support system for effectively lifting a load in a controlled manner. The retractable load support system includes a frame, a gerotor attached to a main shaft within said frame, a first spool attached to the gerotor, a biasing device connected to ... | 05/13/2008 |
| 7325660 | Fluid flow regulation of a vehicle shock absorber/damper Shock absorber components, such as a radial bypass damper, an anti-cavitation valve (ACV) and an incremental flow metering valve IFMV. The damper is of a continuous, unitary construction with a main hole and auxiliary holes interconnected by passageways. The ACV has... | 02/05/2008 |
| 7314124 | Vibration damping apparatus A damping apparatus for damping vibrations in a vibrating system including a piston which is reciprocally movable in a hydraulic fluid filled damper chamber, piston movement in either direction of movement being resisted by fluid pressure in the damper chamber behin... | 01/01/2008 |
| 7255210 | Telescopic fork leg for a vehicle, preferably a motorcycle A telescopic fork leg incorporates mutually displaceable inner and outer tube parts and a damping arrangement for damping the relative movements of the tube parts. The damping arrangement comprises tubular and coaxially disposed units. A piston belonging to a first ... | 08/14/2007 |
| 7234576 | Damper, in particular for motor vehicle A damper, in particular for motor vehicle, includes a cylinder containing a hydraulic fluid, a main piston (1) actuated by a rod (3) defining in the cylinder a first chamber (2a) and a second chamber (2), the second chamber contain... | 06/26/2007 |
| 7216747 | Amplitude controlled orifice valving A dual tube shock absorber includes a spool valve located between the upper working chamber and the reserve chamber. The spool valve moves with the piston rod to open and close a flow path between the upper working chamber and the reserve chamber. This provides a lo... | 05/15/2007 |
| 7191877 | Fluid flow regulation of a vehicle shock absorber/damper Shock absorber components, such as a radial bypass damper, an anti-cavitation valve (ACV) and an incremental flow metering valve IFMV. The damper is of a continuous, unitary construction with a main hole and auxiliary holes interconnected by passageways. The ACV has... | 03/20/2007 |
| 7172058 | Vibration damper with amplitude-dependent damping force Vibration damper with amplitude-dependent damping force includes a cylinder, in which a piston rod, carrying a piston, is guided with freedom of axial movement, where the piston divides the cylinder into a working space on the piston rod side and a working space on ... | 02/06/2007 |
| 7156404 | Adjustable height suspension An apparatus for adjusting a height of suspension of a vehicle frame includes a first end of a shock absorber mounted to a suspension arm and a top end of a shock absorber slidably attached to a frame of the vehicle and is movable in a first plane of travel. An adju... | 01/02/2007 |
| 7124865 | Pressure regulating dampers A damper includes housing bounding a chamber. A barrier is movably disposed within the chamber so as to divide at least a portion of the chamber into a pressure compartment and a control compartment each having a volume, the volume of the pressure compartment and th... | 10/24/2006 |
| 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 |
| 7073063 | Binding a digital license to a portable device or the like in a digital rights management (DRM) system and checking out/checking in the digital license to/from the portable device or the like To render digital content encrypted according to a content key (KD) on a first device having a public key (PU1) and a corresponding private key (PR1), a digital license corresponding to the content is obtained, where the digital license includes the co... | 07/04/2006 |
| 7017720 | Front fork An object of the present invention is to provide a front fork with a double-rod damper, which can improve an efficiency of an assembly operation thereof by simplifying alignment work of piston rods on assembly. To achieve this object, a front fork (30) compri... | 03/28/2006 |
| 7004293 | Thermal expansion compensation shock absorber The present invention provides the art with a shock absorber which is capable of compensating for the differing thermal expansion between two materials. The shock absorber in its various embodiments includes a free floating pressure tube that is able to expand or co... | 02/28/2006 |
| 6978871 | Adjustable damper with control valve, mounted in an external collar A shock absorber according to the present invention includes a pressure tube having a working chamber disposed therewithin. A piston is slidably disposed within the working chamber and divides the working chamber into an upper working chamber and a lower working cha... | 12/27/2005 |
| 6978872 | Hydraulic dampers with pressure regulated control valve A suspension damper includes a housing bounding a main chamber. A piston rod is slideably disposed within the main chamber of the housing. A main piston is mounted on the first end of the piston rod within the main chamber of the housing so as to slideably engage ag... | 12/27/2005 |
| 6971493 | Front fork This invention provides a front fork that can be efficiently be filled with oil when it is manufactured. To achieve this object, the front fork comprising: an outer tube (1); an inner tube (2) inserted expansibly and contractibly into the outer tube ( | 12/06/2005 |
| 6966412 | Position-sensitive shock absorber A position-sensitive shock absorbing device with a single cast body construction is provided. The device has a tubular member, a moveable piston within the tubular member, a first hydraulic fluid chamber defined by an interior volume of the tubular member, a bypass ... | 11/22/2005 |
| 6926500 | Fluid inertia drag damper for rotary wing aircraft rotor A drag damper for use on a rotary-wing aircraft rotor comprises a body defining two variable volume chambers linked by a piston. The chambers filled with fluid in the damper are connected by a restrictor port in the piston or between the latter and the body, and via... | 08/09/2005 |
| 6926128 | Adaptive shock damping control A shock absorber damper assembly is provided that includes a working cylinder filled with fluid. A piston and rod are disposed in the working cylinder and move along an axis to provide dampening during a compression stroke. For a twin tube arrangement, a reservoir s... | 08/09/2005 |
| 6892865 | Monotube shock absorber remote reservoir fluid connection A damper assembly includes a reservoir chamber for supplying hydraulic fluid to a main damper chamber. The reservoir chamber is in fluid communication with damper chamber through an internal fluid passage formed by openings in the damper housing and the reservoir ho... | 05/17/2005 |
| 6837343 | Shock absorber A shock absorber comprises first and second axially aligned cylinders (11, 21) each having a liquid filled piston chamber (12, 22), an axially displaceable piston (13, 23) received in the piston chamber (12,22), and means (14, 24) ... | 01/04/2005 |
| 6776269 | Twin piston shock absorber A two-stage piston has a twin piston design where one piston produces a high damping force and the second piston produces a low damping force. At specified positions along the pressure tube, by-pass passages are formed to allow fluid flow around the high damping for... | 08/17/2004 |
| 6749046 | Combined spring and shock absorber system including a hydraulic accumulator In a combined spring and shock absorber system for a wheel suspension of a vehicle comprising tubular rolling bellows arranged between a wheel-support structure and a vehicle body the bellows includes a space filled with a fluid in communication with a hydraulic acc... | 06/15/2004 |
| 6715744 | Air spring shock absorber module with internal load-based damping adjustment A suspension assembly is provided that includes a shock absorber having a housing filled with hydraulic fluid. An air spring is supported on the shock absorber, and the air spring includes a bladder filled with air. A valve assembly is surrounded by the fluid housin... | 04/06/2004 |
| 6698558 | Safety brake system for garage doors A brake system for garage doors including a piston assembly movable within a longitudinal housing assembly and including a central through opening and a threaded bushing rigidly mounted to the piston assembly. A threaded axle is cooperatively received by ... | 03/02/2004 |
| 6668988 | Buffering mechanism A buffering mechanism comprises a block member which is installed detachably in an actuator body, a piston which compresses air in a compressing chamber when a movable element abuts against the piston, and a check valve and a variable throttle valve which... | 12/30/2003 |
| 6662914 | Hydraulic dashpot A hydraulic dashpot with a cylinder (1) full of shock-absorbing fluid, with a piston (3) mounted on the end of piston rod (2), traveling back and forth inside the cylinder, separating the cylinder into two compartments (4 & 5), and provided with ports and... | 12/16/2003 |
| 6659241 | Shock absorber compression damping adjustment An adjustable shock absorber is provided that includes a body having a fluid passageway with first and second passages in fluid communication with one another. A valve assembly is arranged between the passages and includes a plunger that is adjustable bet... | 12/09/2003 |
| 6622832 | Hydraulic shock absorber A rod guide is press-filted to an inner periphery of an outer cylinder and to an inner periphery of an inner cylinder. A rod seal is provided at an inner periphery of a cover member for covering the outer cylinder to seal between a piston rod and the cove... | 09/23/2003 |
| 6619446 | Vibration damper with a deaerating device A vibration damper, particularly a mono-tube vibration damper, has a cylinder in which a piston rod is arranged together with a piston so as to be axially movable, wherein the piston divides the cylinder into two work spaces filled with a work medium, the... | 09/16/2003 |
