US3115071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reciprocating hydraulic motor
Assignee: Frank G Hough Co
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Filing: 1961-10-06
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Granted: 1963-12-24
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Expires: 1981-10-06
Abstract
No abstract record available.
Inventors
- 👤 Don S Strader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:50
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/08; F15B15/14; F15B15/1423; F15B15/1447; F15B15/1452
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A PISTON ASSEMBLY FOR A RECIPROCATING HYDRAULIC MOTOR COMPRISING, A PISTON HEAD PORTION, A PLURALITY OF ANNULAR GROOVES POSITIONED IN AN AXIALLY SPACED APART RELATIONSHIP IN SAID PISTON HEAD PORTION, BEARING AND SEALING RINGS CARRIED ON SAID PISTON HEAD PORTION BETWEEN ADJACENT ONES OF SAID ANNULAR GROOVES, AND MEANS CARRIED IN SAID ANNULAR GROOVES AND EXTENDING RADIALLY OUTWARDLY THEREOF FOR PREVENTING ANY AXIAL MOVEMENT OF SAID BEARING AND SEALING RINGS RELATIVE TO SAID PISTON HEAD PORTION.
Claim 2
Dependent Claim
76 words
A PISTON ASSEMBLY FOR A RECIPROCATING HYDRAULIC MOTOR COMPRISING, A PISTON HEAD PORTION, A PLURALITY OF ANNULAR GROOVES POSITIONED IN AN AXIALLY SPACED APART RELATIONSHIP IN SAID PISTON HEAD PORTION, BEARING AND SEALING RINGS CARRIED ON SAID PISTON HEAD PORTION BETWEEN ADJACENT ONES OF SAID ANNULAR GROOVES, AND MEANS CARRIED IN SAID ANNULAR GROOVES AND EXTENDING RADIALLY OUTWARDLY THEREOF FOR PREVENTING ANY AXIAL MOVEMENT OF SAID BEARING AND SEALING RINGS RELATIVE TO SAID PISTON HEAD PORTION.
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) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |