Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7237471 | Continuously lockable adjustment device A continuously lockable adjustment device for immobilizing elements which are movable relative to each other includes a stepped cylinder having a first cylinder step and a second cylinder step, the second cylinder step having a larger cross-sectional area than the f... | 07/03/2007 |
| 7175154 | Piston structure and liquid feeder valve Piston structure having a first side and a second side and in a recess (6) formed in an outer portion of the piston (1, 22) a resilient sealing element (5, 11, 21) is placed. The axial width and at least in some places the radial depth of the re... | 02/13/2007 |
| 6393965 | Pivot motor For a pivot motor with frame-like sealing elements which are situated in grooves of its vanes, the invention proposes a design in which the frame has an encircling channel which faces its interior and in which an inner sealing insert engages by means of i... | 05/28/2002 |
| 6318242 | Filled hydraulic piston and method of making the same The present invention relates to a filled piston assembly for a hydraulic pump or motor. The filled hydraulic piston assembly includes a blank piston body having first and second ends and a cavity or compartment in the piston body extending inwardly from ... | 11/20/2001 |
| 6019080 | Ported piston A ported piston for increasing the cylinder displacement of internal combustion engines which includes, in a first embodiment, an inertia-activated wafer provided in a cavity located in the piston, with one or more ports connecting the bottom of the cavit... | 02/01/2000 |
| 5079997 | Piston seal device for a pneumatic cylinder A piston seal device of pneumatic cylinder which satisfies the required tightness of a seal as well as the required lubrication characteristics for a piston movement is disclosed. The piston seal device for maintining different pressures acting on each si... | 01/14/1992 |
| 4691621 | Piston-and-cylinder arrangement with radially-yieldable piston head An improved piston-and-cylinder arrangement has a pressure-balanced piston head mounted on an actuator rod. The piston head is mounted for axial movement with the rod, and for radial movement relative thereto. Three annular ring-type seals are provided be... | 09/08/1987 |
| 4014249 | Pneumatically actuated sanding tool A fluid actuated, valveless sanding tool is disclosed which comprises a housing containing a cylinder, a double-ended piston mounted for reciprocal movement within the cylinder, a mounting plate to which an abrasive tool can be attached, and a double rack... | 03/29/1977 |
| 3953213 | Piston construction for fluid power cylinders In order to preclude the entrapment of low pressure fluid in the interior of U-form seal members in the peripheral grooves of a piston for a fluid power cylinder and in turn prevent the inward deflection of such seals, there are provided cuts or notches i... | 04/27/1976 |
