Patent US3174435A successfully refreshed from Google Patents.
US3174435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump or motor
Assignee: Doosan Bobcat North America Inc
•
Filing: 1962-08-16
•
Granted: 1965-03-23
•
Expires: 1982-08-16
Abstract
No abstract record available.
Inventors
- 👤 Ronald L Sisson
- 👤 Carmen H Shreve
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:12
CPC Classifications
F; F04; F04C; F04C15/00; F04C15/0003; F04C15/0023; F04C15/0026
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
IN A PUMP OR MOTOR INCLUDING A HOUSING AND A HOUSING CHAMBER CONTAINING ROTARY FLUID ENERGY TRANSLATING MEANS AND HIGH AND LOW PRESSURE AREAS IN SAID HOUSING CHAMBER, A UNITARY ONE PIECE THRUST PLATE IN THE HOUSING HAVING OPPOSED SIDE PLATE PORTIONS, ONE OF SAID PLATE PORTIONS HAVING A SEALING SURFACE MOVABLE INTO SEALING RELATIONSHIP WITH ONE SIDE OF SAID ROTARY MEANS, THE OTHER SIDE PLATE PORTION OF SAID THRUST PLATE BEING HELD IN AXIALLY SPACED RELATION TO SAID ONE SIDE PLATE PORTION TO FORM INTERMEDIATE OF SAID SIDE PLATE PORTIONS MOTIVE PRESSURE CHAMBER MEANS, MEANS FIXEDLY AND SEALINGLY SECURED TO AND INTERMEDIATE OF SAID SIDE PLATE PORTIONS FOR HOLDING THE LATTER IN SAID SPACED RELATION AND FORMING THEREWITH SAID PRESSURE CHAMBER MEANS, AND A PLURALITY OF SPACED
Claim 2
Dependent Claim
128 words
IN A PUMP OR MOTOR INCLUDING A HOUSING AND A HOUSING CHAMBER CONTAINING ROTARY FLUID ENERGY TRANSLATING MEANS AND HIGH AND LOW PRESSURE AREAS IN SAID HOUSING CHAMBER, A UNITARY ONE PIECE THRUST PLATE IN THE HOUSING HAVING OPPOSED SIDE PLATE PORTIONS, ONE OF SAID PLATE PORTIONS HAVING A SEALING SURFACE MOVABLE INTO SEALING RELATIONSHIP WITH ONE SIDE OF SAID ROTARY MEANS, THE OTHER SIDE PLATE PORTION OF SAID THRUST PLATE BEING HELD IN AXIALLY SPACED RELATION TO SAID ONE SIDE PLATE PORTION TO FORM INTERMEDIATE OF SAID SIDE PLATE PORTIONS MOTIVE PRESSURE CHAMBER MEANS, MEANS FIXEDLY AND SEALINGLY SECURED TO AND INTERMEDIATE OF SAID SIDE PLATE PORTIONS FOR HOLDING THE LATTER IN SAID SPACED RELATION AND FORMING THEREWITH SAID PRESSURE CHAMBER MEANS, AND A PLURALITY OF SPACED
References Cited (Backward Citations)
US2816512A
Cited
US2809592A
Cited
GB769763A
Cited
US2853952A
Cited
US2967487A
Cited
US3050010A
Cited
US3101673A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |