Patent US1047502A successfully refreshed from Google Patents.
US3139834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear pump assembly
Assignee: COY Manufacturing CO
•
Filing: 1960-07-13
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Granted: 1964-07-07
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Expires: 1980-07-13
Abstract
No abstract record available.
Inventors
- 👤 Oscar C Blomgren
- 👤 Jr Oscar C Blomgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:02
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/082; F04C2/086; F04C2/084; F05; F05C; F05C2225/00; F05C2225/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
124 words
A GEAR PUMP ASSEMBLY INCLUDING A PLURALITY OF HOUSING SECTIONS COOPERATIVELY DEFINING A DRIVE GEAR CAVITY, AN IDLER GEAR CAVITY AND FLUID INLET AND OUTLET SPACES, A DRIVE GEAR AND AN IDLER GEAR EACH HAVING AN INTERNAL CYLINDRICAL BEARING WALL, GENERALLY CYLINDRICAL AND HOLLOW BEARING BOSSES PROJECTING INTO SAID DRIVE GEAR CAVITY AND IDLER GEAR CAVITY FROM AT LEAST ONE OF SAID SECTIONS, THE INTERNAL WALL OF SAID DRIVE GEAR BEING JOURNALLED ON THE BEARING BOSS IN SAID DRIVE GEAR CAVITY AND THE INTERNAL WALL OF SAID IDLER GEAR BEING JOURNALLED AND SUPPORTED ON THE BEARING BOSS IN SAID IDLER GEAR CAVITY, MOVEMENT OF SAID IDLER GEAR IN A DIRECTION PARALLEL TO THE ROTARY AXIS THEREOF BEING RESTRICTED BY CONTACT WITH THE HOUSING SECTIONS.
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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) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |