Patent US3358495A successfully refreshed from Google Patents.
US3358495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring the wear on surfaces subject to friction
Assignee: Wintershall AG
•
Filing: 1964-12-21
•
Granted: 1967-12-19
•
Expires: 1984-12-21
Abstract
No abstract record available.
Inventors
- 👤 Baist Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:00
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/56; G01N19/00; G01N19/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
196 words
AN APPARATUS FOR THE MEASUREMENT OF WEAR AND FRICTION EFFECTS BETWEEN RUBBING SURFACES COMPRISING; A DISC MEMBER DRIVEN IN ROTATION ON A PREDETERMINED AXIS AND HAVING A RUBBING SURFACE IN A PLANE NORMAL TO SAID AXIS, A FRAME ADJACENT SAID DISC MEMBER AND TILTABLE TOWARD AND AWAY FROM SAID DISC MEMBER, A FLAT ENDED CYLINDRICAL PIN CARRIED BY THE FRAME ADAPTED FOR BEING BROUGHT INTO ENDWISE ENGAGEMENT WITH SAID SURFACE OF SAID DISC MEMBER BY TILTING OF THE FRAME, MEANS BIASING THE FRAME TOWARD SAID DISC MEMBER, MEANS FOR SUPPLYING LUBRICANT TO THE REGION OF ENGAGEMENT OF THE FLAT END OF SAID PIN WITH SAID SURFACE OF SAID DISC MEMBER, SAID PIN AND DISC BEING FORMED OF ELECTRICALLY CONDUCTIVE MATERIALS WHEREBY UPON THE DEVELOPMENT OF A REACTION LAYER ON AT LEAST ONE OF SAID PIN AND THE SURFACE OF THE DISC MEMBER IN THE REGION OF ENGAGEMENT THEREBETWEEN, A THERMOELECTRIC VOLTAGE WILL BE DEVELOPED AT SAID REGION WHEN THE DISC MEMBER ROTATES, AND MEANS HAVING ELECTRICAL CONNECTIONS TO SAID DISC MEMBER AND SAID PIN AND OPERABLE FOR MEASURING THE ELECTRICAL RESISTANCE OF THE REGION OF ENGAGEMENT THEREBETWEEN AND ALSO THE THERMOELECTRIC VOLTAGE DEVELOPED ACROSS SAID REGION.
Claim 2
Independent Claim
196 words
AN APPARATUS FOR THE MEASUREMENT OF WEAR AND FRICTION EFFECTS BETWEEN RUBBING SURFACES COMPRISING; A DISC MEMBER DRIVEN IN ROTATION ON A PREDETERMINED AXIS AND HAVING A RUBBING SURFACE IN A PLANE NORMAL TO SAID AXIS, A FRAME ADJACENT SAID DISC MEMBER AND TILTABLE TOWARD AND AWAY FROM SAID DISC MEMBER, A FLAT ENDED CYLINDRICAL PIN CARRIED BY THE FRAME ADAPTED FOR BEING BROUGHT INTO ENDWISE ENGAGEMENT WITH SAID SURFACE OF SAID DISC MEMBER BY TILTING OF THE FRAME, MEANS BIASING THE FRAME TOWARD SAID DISC MEMBER, MEANS FOR SUPPLYING LUBRICANT TO THE REGION OF ENGAGEMENT OF THE FLAT END OF SAID PIN WITH SAID SURFACE OF SAID DISC MEMBER, SAID PIN AND DISC BEING FORMED OF ELECTRICALLY CONDUCTIVE MATERIALS WHEREBY UPON THE DEVELOPMENT OF A REACTION LAYER ON AT LEAST ONE OF SAID PIN AND THE SURFACE OF THE DISC MEMBER IN THE REGION OF ENGAGEMENT THEREBETWEEN, A THERMOELECTRIC VOLTAGE WILL BE DEVELOPED AT SAID REGION WHEN THE DISC MEMBER ROTATES, AND MEANS HAVING ELECTRICAL CONNECTIONS TO SAID DISC MEMBER AND SAID PIN AND OPERABLE FOR MEASURING THE ELECTRICAL RESISTANCE OF THE REGION OF ENGAGEMENT THEREBETWEEN AND ALSO THE THERMOELECTRIC VOLTAGE DEVELOPED ACROSS SAID REGION.
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) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |