Patent US3232056A successfully refreshed from Google Patents.
US3232056A
Expired / Lapsed
US
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Step variable fluid translator system
Assignee: Enerpac Tool Group Corp
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Filing: 1964-02-07
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Granted: 1966-02-01
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Expires: 1984-02-07
Abstract
No abstract record available.
Inventors
- 👤 Allan E Heinrich
- 👤 Richard C Hare
- 👤 Wesley R Master
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:03
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/12; F04B1/20; F04B1/2014; F04B1/2042; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/44; F16H61/444
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A FLUID PRESSURE ENERGY TRANSLATING DEVICE, COMPRISING A ROTATABLE CYLINDER BARREL HAVING A BEARING SURFACE AT ONE END AND A PLURALITY OF CHAMBERS OPENING TO SAID SURFACE, A PLURALITY OF RECIPROCABLE PISTONS IN SAID CHAMBERS FOR ROTATION WITH SAID BARREL, A NON-ROTATABLE CAM PLATE AT THE OTHER END OF SAID BARREL AGAINST WHICH THE ENDS OF SAID PISTONS ARE ADAPTED TO SLIDE CAUSING RECIPROCATION OF SAID PISTONS AS THEY ROTATE WITH SAID BARREL, A VALVE PLATE ENGAGING SAID SURFACE HAVING FIRST, SECOND AND THIRD PORTS, SAID PORTS SEQUENTIALLY COMMUNICATING WITH SAID CHAMBERS AS SAID BARREL ROTATES, A SOURCE OF PRESSURIZED FLUID, CONDUIT MEANS FOR DELIVERING SAID PRESSURIZED FLUID TO EITHER SAID FIRST OR SECOND PORTS.
Claim 2
Dependent Claim
115 words
A FLUID PRESSURE ENERGY TRANSLATING DEVICE, COMPRISING A ROTATABLE CYLINDER BARREL HAVING A BEARING SURFACE AT ONE END AND A PLURALITY OF CHAMBERS OPENING TO SAID SURFACE, A PLURALITY OF RECIPROCABLE PISTONS IN SAID CHAMBERS FOR ROTATION WITH SAID BARREL, A NON-ROTATABLE CAM PLATE AT THE OTHER END OF SAID BARREL AGAINST WHICH THE ENDS OF SAID PISTONS ARE ADAPTED TO SLIDE CAUSING RECIPROCATION OF SAID PISTONS AS THEY ROTATE WITH SAID BARREL, A VALVE PLATE ENGAGING SAID SURFACE HAVING FIRST, SECOND AND THIRD PORTS, SAID PORTS SEQUENTIALLY COMMUNICATING WITH SAID CHAMBERS AS SAID BARREL ROTATES, A SOURCE OF PRESSURIZED FLUID, CONDUIT MEANS FOR DELIVERING SAID PRESSURIZED FLUID TO EITHER SAID FIRST OR SECOND PORTS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |