US3250901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time temperature recorder for turbojet engines
Assignee: RTX Corp
•
Filing: 1962-04-20
•
Granted: 1966-05-10
•
Expires: 1982-04-20
Abstract
No abstract record available.
Inventors
- 👤 Charles B Brahm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:18
CPC Classifications
G; G01; G01K; G01K1/00; G01K1/02; G01K1/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
APPARATUS FOR DETERMINING THE TIME FOR OVERHAUL OF A TURBOJET COMPRISING: AN INDICATOR FOR RECORDING CUMULATIVE ENGINE OVERTEMPERATURE, A MOTOR FOR ACTUATING SAID INDICATOR, MEANS FOR PRODUCING A FIRST SIGNAL PROPORTIONAL TO ACTUAL ENGINE TEMPERATURE, MEANS RESPONSIVE TO ENGINE SPEED FOR PRODUCING A SECOND SIGNAL INDICATIVE OF MAXIMUM ENGINE TEMPERATURE AT THE SPEED OF SAID ENGINE, MEANS FOR COMPARING SAID FIRST AND SECOND SIGNALS, SAID MEANS FOR COMPARING GENERATING A CONTROL SIGNAL TO ACTUATE SAID MOTOR WHEN SAID ACTUAL TEMPERATURE SIG-
Claim 2
Dependent Claim
81 words
APPARATUS FOR DETERMINING THE TIME FOR OVERHAUL OF A TURBOJET COMPRISING: AN INDICATOR FOR RECORDING CUMULATIVE ENGINE OVERTEMPERATURE, A MOTOR FOR ACTUATING SAID INDICATOR, MEANS FOR PRODUCING A FIRST SIGNAL PROPORTIONAL TO ACTUAL ENGINE TEMPERATURE, MEANS RESPONSIVE TO ENGINE SPEED FOR PRODUCING A SECOND SIGNAL INDICATIVE OF MAXIMUM ENGINE TEMPERATURE AT THE SPEED OF SAID ENGINE, MEANS FOR COMPARING SAID FIRST AND SECOND SIGNALS, SAID MEANS FOR COMPARING GENERATING A CONTROL SIGNAL TO ACTUATE SAID MOTOR WHEN SAID ACTUAL TEMPERATURE SIG-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |