US3171358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear type pump
Assignee: Lear Siegler Inc
•
Filing: 1963-06-03
•
Granted: 1965-03-02
•
Expires: 1983-06-03
Abstract
No abstract record available.
Inventors
- 👤 John A Lauck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:07
CPC Classifications
A; A47; A47B; A47B91/00; A47B91/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
IN A PRESSURE LOADED GEAR TYPE PUMP HAVING A CAVITY FOR MESHING GEARS, A HOUSING FOR SAID GEARS COMPRISING A BODY AND A COVER CONNECTED THERETO, COVER THRUST PLATE MEANS PERIPHERALLY CLAMPED BETWEEN SAID BODY AND COVER AND EXTENDING ACROSS ONE SIDE OF SAID MESHING GEARS, COUNTERBORES IN SAID COVER SURROUNDING THE AXES OF SAID MESHING GEARS AND ECCENTRICALLY DISPOSED WITH RESPECT THERETO TOWARD THE INLET SIDE OF SAID PUMP, SEAL RINGS MOUNTED IN SAID COUNTERBORES AND ENGAGING SAID COVER AND COVER THRUST PLATE, AND A CHAMBER IN SAID COVER EXTERIORLY OF SAID SEAL RINGS ECCENTRICALLY DISPOSED WITH RESPECT TO THE AXES OF SAID MESHING GEARS TOWARD THE OUTLET SIDE OF SAID PUMP, SAID CHAMBER BEING HIGH PRESSURE LOADED TO COMPENSATE FOR THE HIGH PRESSURE LOADING IN SAID CAVITY IN THE BODY FOR SAID MESHING GEARS.
Claim 2
Dependent Claim
136 words
IN A PRESSURE LOADED GEAR TYPE PUMP HAVING A CAVITY FOR MESHING GEARS, A HOUSING FOR SAID GEARS COMPRISING A BODY AND A COVER CONNECTED THERETO, COVER THRUST PLATE MEANS PERIPHERALLY CLAMPED BETWEEN SAID BODY AND COVER AND EXTENDING ACROSS ONE SIDE OF SAID MESHING GEARS, COUNTERBORES IN SAID COVER SURROUNDING THE AXES OF SAID MESHING GEARS AND ECCENTRICALLY DISPOSED WITH RESPECT THERETO TOWARD THE INLET SIDE OF SAID PUMP, SEAL RINGS MOUNTED IN SAID COUNTERBORES AND ENGAGING SAID COVER AND COVER THRUST PLATE, AND A CHAMBER IN SAID COVER EXTERIORLY OF SAID SEAL RINGS ECCENTRICALLY DISPOSED WITH RESPECT TO THE AXES OF SAID MESHING GEARS TOWARD THE OUTLET SIDE OF SAID PUMP, SAID CHAMBER BEING HIGH PRESSURE LOADED TO COMPENSATE FOR THE HIGH PRESSURE LOADING IN SAID CAVITY IN THE BODY FOR SAID MESHING GEARS.
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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) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |