US3115282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Forced feed dispensing system
Assignee: Walker Manufacturing Co
•
Filing: 1959-09-22
•
Granted: 1963-12-24
•
Expires: 1979-09-22
Abstract
No abstract record available.
Inventors
- 👤 William G Mckenzie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:08
CPC Classifications
F; F16; F16N; F16N27/00; G; G01; G01F; G01F11/00; G01F11/02; G01F11/021
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
102 words
IN A LUBRICATING OR LIQUID DISPENSING SYSTEM, A RESERVOIR FOR LIQUID, A RECIPROCABLE PUMP INCLUDING A PUMP CHAMBER OF PREDETERMINED MAXIMUM VOLUME, A FIRST CONDUIT CONNECTING THE CHAMBER TO THE RESERVOIR, A VALVE FOR CONTROLLING LIQUID FLOW TO THE POINT TO RECEIVE LIQUID, A SECOND CONDUIT CONNECTING THE PUMP CHAMBER TO THE VALVE, AND A THIRD CONDUIT CONNECTED TO SAID RESERVOIR AT ONE END AND AT ITS OTHER END TO A POINT IN SAID SECOND CONDUIT CLOSE TO SAID PUMP CHAMBER, THE VOLUME OF SAID SECOND CONDUIT BETWEEN SAID THIRD CONDUIT AND SAID VALVE BEING GREATER THAN SAID PREDETERMINED MAXIMUM PUMP VOLUME.
References Cited (Backward Citations)
US1194705A
Cited
US1762901A
Cited
US2219681A
Cited
US2328812A
Cited
US2372544A
Cited
US2545319A
Cited
US2705094A
Cited
US2669271A
Cited
US2669321A
Cited
US2723161A
Cited
US2849162A
Cited
GB794916A
Cited
US2869572A
Cited
US2847149A
Cited
US2996190A
Cited
US2894664A
Cited
US2895649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |