US3105446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear pump assembly
Assignee: Individual
•
Filing: 1961-09-05
•
Granted: 1963-10-01
•
Expires: 1981-09-05
Abstract
No abstract record available.
Inventors
- 👤 Sr Oscar C Blomgren
- 👤 Jr Oscar C Blomgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:43
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/082; F04C2/086
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
IN A GEAR PUMP ASSEMBLY HAVING A DRIVE GEAR AND IDLER GEAR JOURNALLED FOR MESHING ENGAGEMENT WITHIN FLUID CAVITIES IN A HOUSING, THE IMPROVEMENT COMPRISING OPPOSED GENERALLY CYLINDRICALLY FORMED, THIN WALLED AND HOLLOW BOSSES PROJECTING INTO AT LEAST ONE OF SAID CAVITIES, ONE GEAR IN SAID ONE CAVITY HAVING RECESSES ON THE OPPOSITE SIDES THEREOF AND ON OPPOSITE SIDES OF A CENTRAL WEB, SAID RECESSES BEING GENERALLY CYLINDRICAL AND HAVING DIAMETERS CORRESPONDING GENERALLY TO THE EXTERNAL DIAMETERS OF SAID BOSSES IN SAID ONE CAVITY, THE BOSSES BEING RECEIVED IN SAID RECESSES SO AS TO JOURNAL SAID ONE GEAR THEREON, SAID ONE GEAR HAVING PASSAGES LEADING FROM THE INTERGEAR TOOTH SPACES THEREOF TO OPPOSITE SIDES OF SAID WEB SO AS TO ALLOW FLOW OF FLUID FROM SAID SPACES WHEN SAID ONE GEAR IS ROTATED TO OPPOSITE SIDES OF SAID ONE GEAR SO AS TO BALANCE THE SAME ON SAID BOSSES THROUGH THE FLUID PRESSURE SO EXERTED.
Claim 2
Dependent Claim
155 words
IN A GEAR PUMP ASSEMBLY HAVING A DRIVE GEAR AND IDLER GEAR JOURNALLED FOR MESHING ENGAGEMENT WITHIN FLUID CAVITIES IN A HOUSING, THE IMPROVEMENT COMPRISING OPPOSED GENERALLY CYLINDRICALLY FORMED, THIN WALLED AND HOLLOW BOSSES PROJECTING INTO AT LEAST ONE OF SAID CAVITIES, ONE GEAR IN SAID ONE CAVITY HAVING RECESSES ON THE OPPOSITE SIDES THEREOF AND ON OPPOSITE SIDES OF A CENTRAL WEB, SAID RECESSES BEING GENERALLY CYLINDRICAL AND HAVING DIAMETERS CORRESPONDING GENERALLY TO THE EXTERNAL DIAMETERS OF SAID BOSSES IN SAID ONE CAVITY, THE BOSSES BEING RECEIVED IN SAID RECESSES SO AS TO JOURNAL SAID ONE GEAR THEREON, SAID ONE GEAR HAVING PASSAGES LEADING FROM THE INTERGEAR TOOTH SPACES THEREOF TO OPPOSITE SIDES OF SAID WEB SO AS TO ALLOW FLOW OF FLUID FROM SAID SPACES WHEN SAID ONE GEAR IS ROTATED TO OPPOSITE SIDES OF SAID ONE GEAR SO AS TO BALANCE THE SAME ON SAID BOSSES THROUGH THE FLUID PRESSURE SO EXERTED.
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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) | 1966-09-30 | 1967-04-01 | 1967-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-30 | 1971-04-01 | 1971-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-30 | 1975-04-01 | 1975-10-01 | $7700.00 | Window Closed / Lapsed |