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US3608438A
Expired / Lapsed
US
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Rectangular body ram
Assignee: Tomco Inc
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Filing: 1968-05-13
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Granted: 1971-09-28
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Expires: 1988-05-13
Abstract
Abstract DISCLOSED HEREIN IS A WORK HOLDING ASSEMBLY INCLUDING A HYDRAULIC DEVICE HAVING A SOLID OR HOLLOW RAM MOUNTED FOR RECIPROCAL MOTION WITH N A RECTANGULAR HOUSING WITH A PISTON HEAD ON SAID RAM POSITIONED IN SEALING ENGAGEMENT WITH A BORE IN THE HOUSING. FLUID FLOW PASSAGES IN THE WALLS OF THE HOUSING ENTER THE BORE AT POINTS OUT OF THE PATH OF MOTION OF SAID PISTON HEAD AND A MOUNTING SURFACE IS PROVIDED ON THE HOUSING IN A PLANE PERPENDICULAR TO THE AXIS OF THE RAM.
Inventors
- 👤 Vitas T Thomas
- 👤 Robert A Lovdahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:22
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/14; B; B23; B23Q; B23Q3/00; B23Q3/02; B23Q3/06; B23Q3/08; F15; F15B; F15B15/00; F15B15/08; F15B15/14; F15B15/1423; F15B15/1428; B23Q2703/00; B23Q2703/02; B23Q2703/04
Claims Analysis
Total Claims: 0
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References 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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |