US3080854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic piston machine
Assignee: Individual
•
Filing: 1957-08-06
•
Granted: 1963-03-12
•
Expires: 1977-08-06
Abstract
No abstract record available.
Inventors
- 👤 Wiggermann Georg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:12
CPC Classifications
F; F01; F01B; F01B3/00; F01B3/0032; F01B3/0044; F01B3/0052; F01B3/0082; F01B3/0085; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/18336
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A HYDRAULIC PISTON MACHINE, COMPRISING A CYLINDER STRUCTURE AND A PISTON FORMING TOGETHER THEREWITH A VARIABLE-VOLUME CHAMBER FOR A LIQUID WORKING MEDIUM IN SAID CHAMBER, SAID PISTON HAVING AN OUTER JACKET OF GREAT SURFACE HARDNESS AND A FILLER BODY OF LESS HARDNESS AND LOWER SPECIFIC GRAVITY THAN SAID JACKET, SAID FILLER BODY BEING ENCLOSED BY SAID JACKET AND FORMING BETWEEN SAID JACKET AND SAID FILLER BODY A PERIPHERAL INTERSTICE COMMUNICATING WITH SAID CHAMBER.
Claim 2
Dependent Claim
73 words
A HYDRAULIC PISTON MACHINE, COMPRISING A CYLINDER STRUCTURE AND A PISTON FORMING TOGETHER THEREWITH A VARIABLE-VOLUME CHAMBER FOR A LIQUID WORKING MEDIUM IN SAID CHAMBER, SAID PISTON HAVING AN OUTER JACKET OF GREAT SURFACE HARDNESS AND A FILLER BODY OF LESS HARDNESS AND LOWER SPECIFIC GRAVITY THAN SAID JACKET, SAID FILLER BODY BEING ENCLOSED BY SAID JACKET AND FORMING BETWEEN SAID JACKET AND SAID FILLER BODY A PERIPHERAL INTERSTICE COMMUNICATING WITH SAID CHAMBER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |