US3376824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear pump
Assignee: Sauer Sundstrand SpA
•
Filing: 1966-06-27
•
Granted: 1968-04-09
•
Expires: 1986-06-27
Abstract
No abstract record available.
Inventors
- 👤 Turolla Marco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:11
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/12; F04C2/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A GEAR PUMP COMPRISING A PUMP CASE, A PAIR OF GEARS ROTATABLY MOUNTED IN CAVITIES IN SAID CASE, INLET AND OUTLET OPENINGS IN SAID CASE COMMUNICATING WITH SAID GEAR CAVITY, A SEALING PLATE MOUNTED AT ONE SIDE OF SAID GEARS RESILIENTLY BENDABLE AXIALLY OF SAID CASE AND CLAMPED AT ITS PERIPHERY IN SAID CASE, A PRESSURE CHAMBER IN SAID CASE ON THE OUTER SIDE OF SAID PLATE AND IN COMMUNICATION WITH THE PRESSURE SIDE OF SAID PUMP, THE HYDRAULIC PRESSURE GENERATED IN SAID CHAMBER URGING SAID PLATE AGAINST THE LATERAL SURFACES OF SAID GEARS, AND A WEAKENING GROOVE IN SAID PLATE WHICH AT LEAST AT SAID PRESSURE SIDE OF SAID PUMP HAS AN OUTLINE APPROXIMATING TO THE CIRCUMFERENTIAL PROFILE OF SAID GEARS.
Claim 2
Dependent Claim
122 words
A GEAR PUMP COMPRISING A PUMP CASE, A PAIR OF GEARS ROTATABLY MOUNTED IN CAVITIES IN SAID CASE, INLET AND OUTLET OPENINGS IN SAID CASE COMMUNICATING WITH SAID GEAR CAVITY, A SEALING PLATE MOUNTED AT ONE SIDE OF SAID GEARS RESILIENTLY BENDABLE AXIALLY OF SAID CASE AND CLAMPED AT ITS PERIPHERY IN SAID CASE, A PRESSURE CHAMBER IN SAID CASE ON THE OUTER SIDE OF SAID PLATE AND IN COMMUNICATION WITH THE PRESSURE SIDE OF SAID PUMP, THE HYDRAULIC PRESSURE GENERATED IN SAID CHAMBER URGING SAID PLATE AGAINST THE LATERAL SURFACES OF SAID GEARS, AND A WEAKENING GROOVE IN SAID PLATE WHICH AT LEAST AT SAID PRESSURE SIDE OF SAID PUMP HAS AN OUTLINE APPROXIMATING TO THE CIRCUMFERENTIAL PROFILE OF SAID GEARS.
References Cited (Backward Citations)
US164147A
Cited
US2544988A
Cited
US2702509A
Cited
US2809592A
Cited
US3019737A
Cited
US3204566A
Cited
US3280754A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |