Did You Know...
...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 7243596 | Spacer expander In a combined oil ring having a spacer expander to be installed between a pair of upper and lower side rails, a plurality of axially protruding inner peripheral protruding portions are formed on the inner peripheral side of the spacer expander along its peripheral d... | 07/17/2007 |
| 7024866 | Axial loaded seal system with a static L-seal A piston includes a circumferential groove having a dynamic split seal ring having a flat axially facing surface, a static seal ring having a flat axially facing surface abutting the flat surface of the dynamic seal ring, and a spring mounted within the groove. The ... | 04/11/2006 |
| 6267384 | Thin 3-piece oil ring An improved thin 3-piece oil ring 1 of an axial width not greater than 2 mm, is provided that has a corrugated spacer expander 2 of a circumferentially successive, substantially U-shaped configuration, and circular, upper and lower side rails 3, 4 holding... | 07/31/2001 |
| 5275422 | Sealing assembly This invention relates to a fluid sealing mechanism for the inside diameter and or the outside diameter of a piston-cylinder arrangement. This device results in zero seal leakage path with low differential seal pressure required using only one piston ring... | 01/04/1994 |
| 5028055 | Substantially zero leakage path sealing assembly with additional line to line ring This invention relates to a fluid sealing mechanism for the inside diameter and or the outside diameter of a piston-cylinder arrangement. This device results in substantially zero seal leakage path with low differential seal pressure required using only o... | 07/02/1991 |
| 4474106 | Fluidic self adjusting seal assembly A fluidic bearing seal assembly comprised of a plurality of floating back ring seals positioned in a plurality of annular grooves in a piston with at least one free-floating sealing wedge fitted to the outer peripheral edge of each backing ring for slidi... | 10/02/1984 |
| 4032159 | Interference compression seal An interference compression seal comprising a delta-shaped seal of relatively soft elastomeric material adapted to be placed in a groove between relatively moving machine parts with the apex of the delta directed radially outwardly creating a line seal an... | 06/28/1977 |
| 3999767 | Piston ring system A multiple element seal ring system comprising a pair of pressure non-deformable split rings and a deformable expander ring adapted to be received in a groove. The split rings are provided with relatively narrow inner surfaces spaced from the groove botto... | 12/28/1976 |
| 3990712 | Double-action compression type seal A seal mountable between a piston-like element and a cylinder-like element, one of which is formed with a groove opening toward the other, has a supple annular core with an inner periphery and an outer periphery spaced radially therefrom. One of these per... | 11/09/1976 |
