US3196679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid no-flow detection apparatus
Assignee: Lockheed Martin Corp
•
Filing: 1962-05-22
•
Granted: 1965-07-27
•
Expires: 1982-05-22
Abstract
No abstract record available.
Inventors
- 👤 Walter L Howland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:46
CPC Classifications
G; G01; G01F; G01F15/00; G01F15/02; G01F15/022; G01F1/00; G01F1/68; Y; Y10; Y10S; Y10S62/00; Y10S62/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
DETECTOR APPARATUS ADAPTED TO BE DISPOSED WITHIN A FLUID MEDIUM FOR DETECTING A FLOW CONDITION THEREOF, COMPRISING: (A) FIRST AND SECOND HEAT SENSORS DIFFERENTLY COUPLED IN SPACED RELATIONSHIP WITHIN SUCH MEDIUM TO PRODUCE A DIFFERENTIAL OUTPUT MOVEMENT CORRESPONDING TO THE DIFFERENCE IN TEMPERATURE OF SUCH FLUID MEDIUM RESPECTIVELY ADJACENT THERETO; AND
Claim 2
Dependent Claim
51 words
DETECTOR APPARATUS ADAPTED TO BE DISPOSED WITHIN A FLUID MEDIUM FOR DETECTING A FLOW CONDITION THEREOF, COMPRISING: (A) FIRST AND SECOND HEAT SENSORS DIFFERENTLY COUPLED IN SPACED RELATIONSHIP WITHIN SUCH MEDIUM TO PRODUCE A DIFFERENTIAL OUTPUT MOVEMENT CORRESPONDING TO THE DIFFERENCE IN TEMPERATURE OF SUCH FLUID MEDIUM RESPECTIVELY ADJACENT THERETO; AND
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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |