Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 7478708 | Shock absorber A shock absorber comprises first and second axially aligned cylinders (11, 21) each having a liquid filled prison chamber (12, 22), an axially displaceable piston (13, 23), received in the piston chamber (12, 22), and dampeners (14, 24... | 01/20/2009 |
| 7073643 | Compensated rod for a frequency dependent damper shock absorber A frequency-dependent damper incorporates a compensated piston assembly to reduce the amount of static push-out force. The piston rod is a hollow rod with a compensator being disposed within the hollow portion of the piston rod. The piston rod is a hollow rod with a... | 07/11/2006 |
| 7017893 | Pull-type suspension A suspension unit used in a pull type shock application is disclosed, whereby a main shaft passes completely through a damping fluid so that the shock absorber fluid is not compressed when the shock shaft is displaced. The shaft also acts on a compression spring by ... | 03/28/2006 |
| 6911050 | Prosthetic knee unit A prosthetic knee device having a hydraulic cylinder with a piston and a gas cylinder. A connecting element extends outwardly from the piston and passing through a gas cylinder. A bottom portion of the gas cylinder is adapted for slidable engagement with the hydraul... | 06/28/2005 |
| 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 |
| 6609597 | Dampening apparatus A dampening apparatus for dampening an actuating member over a wide array of temperatures. The present invention provides a fluid filled housing having a first chamber, a second chamber, and a passageway therebetween. A first piston is slidably received w... | 08/26/2003 |
| 6425467 | Actuation arrangement for movable components on vehicles An actuation arrangement for movable components on vehicles, particularly for trunk lids or hoods, doors, vehicle tops and top covers, including at least one hydraulic cylinder (1) pivotably coupled to a cylindrical pivot pin (11) on the vehicle and/or on... | 07/30/2002 |
| 6286642 | Fluid regulating device for use with a shock-absorbing cylinder to obtain a variable shock absorbing effect A fluid regulating device includes a valve housing formed with a piston receiving chamber that has a piston member slidingly and sealingly disposed therein to divide the piston receiving chamber into a volume-variable gas compartment filled with pressuriz... | 09/11/2001 |
| 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 |
| 6142270 | Tie device for transmitting force between two structural elements The invention is related to a tie device for use between two structural elements (10, 20) of a civil engineering structure, such as, for example a bridge. The tie device allows the two structural elements to be displaced relative to each other during slow... | 11/07/2000 |
| 5765313 | Method and apparatus for real-time structure parameter modification A method and apparatus for structural deflection control, as well as associated sequential controls that are based on new control laws. The apparatus of this invention is of relatively low cost and performs better than prior art devices. The essence of th... | 06/16/1998 |
| 4315636 | Working vehicle A working vehicle having a pair of opposite wheels movable up and down with each other in opposed relation under hydraulic pressure, and brakes for braking the vehicle during running and also for parking the vehicle. The circuit for the hydraulic pressure... | 02/16/1982 |
