US3271737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wear indicating arrangement for vehicle power transfer devices
Assignee: Individual
•
Filing: 1964-03-25
•
Granted: 1966-09-06
•
Expires: 1984-03-25
Abstract
No abstract record available.
Inventors
- 👤 James L Bezemek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:41
CPC Classifications
F; F16; F16D; F16D66/00; F16D66/02; F16D66/021; F16D66/022; F16D66/023; F16D66/024
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A WEAR INDICATING DEVICE FOR A FRICTION MEMBER HAVING A WEARING SURFACE FOR ENGAGING A RELATIVELY NONWEARING ELECTRICALLY CONDUCTIVE MEMBER COMPRISING A CONDUCTIVE REGION DISPOSED IN INSULATED RELATION WITHIN SAID FRICTION MEMBER AT A PREDETERMINED DEPTH BENEATH SAID WEARING SURFACE IN A PATTERN EXTENDING UNDER SUBSTANTIALLY ALL AREAS OF THE SURFACE, INSULATED LEAD-IN CONDUCTOR MEANS IN ELECTRICAL CONNECTION WITH SAID CONDUCTIVE REGION, AN INDICATOR CIRCUIT INCLUDING ELECTRICAL INDICATOR MEANS AND A CURRENT SOURCE IN SERIES, AND MEANS FOR CONNECTING SAID CIRCUIT IN CONDUCTIVE RELATION BETWEEN SAID LEAD-IN CONDUCTOR MEANS AND SAID NON-WEARING MEMBER.
Claim 2
Dependent Claim
93 words
A WEAR INDICATING DEVICE FOR A FRICTION MEMBER HAVING A WEARING SURFACE FOR ENGAGING A RELATIVELY NONWEARING ELECTRICALLY CONDUCTIVE MEMBER COMPRISING A CONDUCTIVE REGION DISPOSED IN INSULATED RELATION WITHIN SAID FRICTION MEMBER AT A PREDETERMINED DEPTH BENEATH SAID WEARING SURFACE IN A PATTERN EXTENDING UNDER SUBSTANTIALLY ALL AREAS OF THE SURFACE, INSULATED LEAD-IN CONDUCTOR MEANS IN ELECTRICAL CONNECTION WITH SAID CONDUCTIVE REGION, AN INDICATOR CIRCUIT INCLUDING ELECTRICAL INDICATOR MEANS AND A CURRENT SOURCE IN SERIES, AND MEANS FOR CONNECTING SAID CIRCUIT IN CONDUCTIVE RELATION BETWEEN SAID LEAD-IN CONDUCTOR MEANS AND SAID NON-WEARING MEMBER.
References Cited (Backward Citations)
US1902759A
Cited
US2217176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |