Patent US3286791A successfully refreshed from Google Patents.
US3286791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating system
Assignee: Southwire Co LLC
•
Filing: 1964-09-25
•
Granted: 1966-11-22
•
Expires: 1984-09-25
Abstract
No abstract record available.
Inventors
- 👤 Daniel B Cofer
- 👤 Kudla Herman
- 👤 William C Martin
- 👤 Dale D Proctor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:37
CPC Classifications
F; F16; F16N; F16N39/00; F16N2250/00; F16N2250/08; F16N39/02; F16N39/04; F16N39/06; Y; Y10; Y10T; Y10T137/00; Y10T137/6416
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A SYSTEM FOR LUBRICATING AN APPARATUS WHICH COMPRISES: A TANK FOR HOLDING A SUPPLY OF OIL AND HAVING A SUPPLY LINE TO AND A RETURN LINE FROM THE APPARATUS; MEANS FOR HEATING THE OIL IN SAID TANK TO A TEMPERATURE OF A PREDETERMINED VALUE; MEANS FOR ADVANCING THE OIL IN SAID SUPPLY LINE; A HEAT EXCHANGER CONNECTED INTO SAID SUPPLY LINE FOR PASSAGE OF THE OIL THERETHROUGH; MEANS FOR CIRCULATING A COOLANT IN SAID HEAT EXCHANGER; AND CONTROL MEANS RESPONSIVE TO THE TEMPERATURE OF THE OIL SUPPLIED TO THE APPARATUS FOR RENDERING SAID COOLANT CIRCULATING MEANS OPERATIVE AND UNOPERATIVE IN RESPONSE TO THE CHANGES IN THE TEMPERATURE OF THE OIL ABOVE AND BELOW SAID PREDETERMINED VALUE.
Claim 2
Independent Claim
116 words
A SYSTEM FOR LUBRICATING AN APPARATUS WHICH COMPRISES: A TANK FOR HOLDING A SUPPLY OF OIL AND HAVING A SUPPLY LINE TO AND A RETURN LINE FROM THE APPARATUS; MEANS FOR HEATING THE OIL IN SAID TANK TO A TEMPERATURE OF A PREDETERMINED VALUE; MEANS FOR ADVANCING THE OIL IN SAID SUPPLY LINE; A HEAT EXCHANGER CONNECTED INTO SAID SUPPLY LINE FOR PASSAGE OF THE OIL THERETHROUGH; MEANS FOR CIRCULATING A COOLANT IN SAID HEAT EXCHANGER; AND CONTROL MEANS RESPONSIVE TO THE TEMPERATURE OF THE OIL SUPPLIED TO THE APPARATUS FOR RENDERING SAID COOLANT CIRCULATING MEANS OPERATIVE AND UNOPERATIVE IN RESPONSE TO THE CHANGES IN THE TEMPERATURE OF THE OIL ABOVE AND BELOW SAID PREDETERMINED VALUE.
References Cited (Backward Citations)
US2907527A
Cited
US3090365A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |