US3258760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow indicator
Assignee: —
•
Filing: —
•
Granted: 1966-06-28
•
Expires: 1983-06-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:17
CPC Classifications
G; G08; G08B; G08B5/00; G08B5/22; G08B5/36; G01; G01P; G01P13/00; G01P13/0006; G01P13/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
AN INDICATOR TO INDICATE THE PRESENCE OF THE FLOW OF COOLING AIR INCLUDING IN COMBINATION A LAMP BULB, A HEAT SENSITIVE ELEMENT SPACED THEREFROM WITHIN THE INFLUENCE OF HEAT RADIATED AND CONVECTED FROM SAID BULB SO THAT COOLING AIR CAN FLOW BETWEEN SAID HEAT SENSITIVE ELEMENT AND SAID BULB, AN ELECTRONIC CIRCUIT, SAID BULB AND THE IMPEDANCE OF SAID HEAT SENSITIVE ELEMENT BEING PARAMETERS THEREOF, SAID CIRCUIT FURTHER INCLUDING MEANS RESPONSIVE TO THE ALTERNATION IN THE AMOUNT OF COOLING AIR FLOWING AND TO THE ALTERATION IN THE AMOUNT OF COOLING AIR FLOWING CONVECTED TO SAID HEAT SENSITIVE ELEMENT TO ALTER THE CURRENT THROUGH THE BULB.
Claim 2
Dependent Claim
105 words
AN INDICATOR TO INDICATE THE PRESENCE OF THE FLOW OF COOLING AIR INCLUDING IN COMBINATION A LAMP BULB, A HEAT SENSITIVE ELEMENT SPACED THEREFROM WITHIN THE INFLUENCE OF HEAT RADIATED AND CONVECTED FROM SAID BULB SO THAT COOLING AIR CAN FLOW BETWEEN SAID HEAT SENSITIVE ELEMENT AND SAID BULB, AN ELECTRONIC CIRCUIT, SAID BULB AND THE IMPEDANCE OF SAID HEAT SENSITIVE ELEMENT BEING PARAMETERS THEREOF, SAID CIRCUIT FURTHER INCLUDING MEANS RESPONSIVE TO THE ALTERNATION IN THE AMOUNT OF COOLING AIR FLOWING AND TO THE ALTERATION IN THE AMOUNT OF COOLING AIR FLOWING CONVECTED TO SAID HEAT SENSITIVE ELEMENT TO ALTER THE CURRENT THROUGH THE BULB.
References Cited (Backward Citations)
US3020760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |