US3353398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for testing the lubrication behaviour of lubricants
Assignee: Bayer AG
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Filing: 1964-07-20
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Granted: 1967-11-21
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Expires: 1984-07-20
Abstract
No abstract record available.
Inventors
- 👤 Lohmar Walther
- 👤 Harnisch Hans Joachim
- 👤 Schmahl Josef
- 👤 Kohli Ortwin
- 👤 Spenner Anton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:19
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/26; G01N33/28; G01N33/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A METHOD OF TESTING THE LUBRICATING CHARACTERISTICS OF A LUBRICANT, WHICH COMPRISES INTRODUCING A LIQUID LUBRICANT BETWEEN A WORM WHEEL AND MESHING WORM THEREFOR; DRIVING SAID WORM WITH SAID WORM WHEEL, MEASURING THE TORQUES ACTING UPON EACH WORM ELEMENT AND MEASURING THE ROTATION SPEEDS THEREOF TO DETERMINE THE EFFECTIVE SLIDING FRICTION BETWEEN SAID GEAR ELEMENTS UNDER LUBRICATION AS INDICATED BY THEIR INDIVIDUAL MEASURED TORQUES AND ROTATION SPEEDS.
Claim 2
Independent Claim
67 words
A METHOD OF TESTING THE LUBRICATING CHARACTERISTICS OF A LUBRICANT, WHICH COMPRISES INTRODUCING A LIQUID LUBRICANT BETWEEN A WORM WHEEL AND MESHING WORM THEREFOR; DRIVING SAID WORM WITH SAID WORM WHEEL, MEASURING THE TORQUES ACTING UPON EACH WORM ELEMENT AND MEASURING THE ROTATION SPEEDS THEREOF TO DETERMINE THE EFFECTIVE SLIDING FRICTION BETWEEN SAID GEAR ELEMENTS UNDER LUBRICATION AS INDICATED BY THEIR INDIVIDUAL MEASURED TORQUES AND ROTATION SPEEDS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |