Patent US721904A successfully refreshed from Google Patents.
Patent US3076090A successfully refreshed from Google Patents.
US3076090A
Expired / Lapsed
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Hot bearing detector circuits
Assignee: Westinghouse Air Brake Co
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Filing: 1960-01-25
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Granted: 1963-01-29
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Expires: 1980-01-25
Abstract
No abstract record available.
Inventors
- 👤 Stapelfeldt Roelif
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:18
CPC Classifications
B; B61; B61L; B61L1/00; B61L1/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A DEVICE FOR DETECTING OVERHEATED WHEEL BEARINGS INCLUDING A HEAT SENSITIVE CELL FOR DEVELOPING AN OUTPUT IN RESPONSE TO RADIANT ENERGY IMPINGING THEREUPON, MEANS FOR PERIODICALLY MODULATING THE RADIANT ENERGY FROM EXTERNAL TARGETS IMPINGING ON SAID CELL, HEAT CONTROL MEANS COOPERATING WITH SAID CELL FOR DEVELOPING OUTPUT SIGNALS FROM SAID CELL OF AMPLITUDES WHICH ARE SINGLE-VALUED FUNCTIONS OF THE TARGET TEMPERATURE, AND CLAMPING MEANS FOR HOLDING ONE AMPLITUDE EXTREME OF THE OUTPUT SIGNALS FROM SAID CELL TO A GIVEN REFERENCE LEVEL.
Claim 2
Independent Claim
81 words
A DEVICE FOR DETECTING OVERHEATED WHEEL BEARINGS INCLUDING A HEAT SENSITIVE CELL FOR DEVELOPING AN OUTPUT IN RESPONSE TO RADIANT ENERGY IMPINGING THEREUPON, MEANS FOR PERIODICALLY MODULATING THE RADIANT ENERGY FROM EXTERNAL TARGETS IMPINGING ON SAID CELL, HEAT CONTROL MEANS COOPERATING WITH SAID CELL FOR DEVELOPING OUTPUT SIGNALS FROM SAID CELL OF AMPLITUDES WHICH ARE SINGLE-VALUED FUNCTIONS OF THE TARGET TEMPERATURE, AND CLAMPING MEANS FOR HOLDING ONE AMPLITUDE EXTREME OF THE OUTPUT SIGNALS FROM SAID CELL TO A GIVEN REFERENCE LEVEL.
References Cited (Backward Citations)
US2818508A
Cited
US2909924A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |