US4545290B1 - - Google Patents
Abstract
Abstract A fluid pressure cylinder of the rodless type having a reciprocally movable piston (14), an elongated slot (15) within the cylinder (11) and an improved sealing element (16) for successively sealing the elongated slot (15) during movement of the piston (14). The improved sealing element (16) is constructed of a generally flexible material and includes a sealing portion (54) for creating a seal against the inner side wall (24) of the cylinder- (11) adjacent to the elongated slot (15) and a portion (55) which is adapted for at least partial insertion within the slot (15) so as to retain the seal member (16) within the slot (15) during an absence of pressure within the cylinder (11).
Inventors
- 👤 G Lieberman Walter
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-03-29 | 1996-09-28 | 1997-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-03-29 | 2000-09-28 | 2001-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-03-29 | 2004-09-28 | 2005-03-30 | $7700.00 | Window Closed / Lapsed |