US3347252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid signal generator
Assignee: RTX Corp
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Filing: 1965-06-18
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Granted: 1967-10-17
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Expires: 1985-06-18
Abstract
No abstract record available.
Inventors
- 👤 Donald B Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:13
CPC Classifications
G; G01; G01M; G01M9/00; G01M9/02; G01M9/04; F; F15; F15B; F15B21/00; F15B21/12; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/8593; Y10T137/86389; Y10T137/86405; Y10T137/86421
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
TEST APPARATUS FOR GENERATING A PULSATING FLUID SIGNAL TO BE APPLIED TO MECHANISM INTENDED TO BE TESTED INCLUDING AN EVACUATED CHAMBER, A FLUID PASSAGE TERMINATING IN SAID ECAVUATED CHAMBER, A FIXED RESTRICTION DISPOSED AT THE INLET OF SAID FLUID PASSAGE, A VARIABLE RESTRICTION DISPOSED AT THE OUTLET OF SAID PASSAGE, MOTOR DRIVER INLUDING A ROTATION MEMBER FOR VARYING SAID VARIABLE RESTRICTION IN TIMED RELATION CORRESPONDING TO A PREDETERMINED FREQUENCY OF SAID PULSATING FLUID SIGNAL, MEANS INTERCONNECTING THE FLUID PASSAGE AT A POINT INTERMEDIATE SAID FIXED AND SAID VARIABLE RESTRICTION AND THE MECHANISM INTEDED TO BE TESTED, AND AMPLITUDE CONTROL MEANS INCLUDING A
Claim 2
Dependent Claim
102 words
TEST APPARATUS FOR GENERATING A PULSATING FLUID SIGNAL TO BE APPLIED TO MECHANISM INTENDED TO BE TESTED INCLUDING AN EVACUATED CHAMBER, A FLUID PASSAGE TERMINATING IN SAID ECAVUATED CHAMBER, A FIXED RESTRICTION DISPOSED AT THE INLET OF SAID FLUID PASSAGE, A VARIABLE RESTRICTION DISPOSED AT THE OUTLET OF SAID PASSAGE, MOTOR DRIVER INLUDING A ROTATION MEMBER FOR VARYING SAID VARIABLE RESTRICTION IN TIMED RELATION CORRESPONDING TO A PREDETERMINED FREQUENCY OF SAID PULSATING FLUID SIGNAL, MEANS INTERCONNECTING THE FLUID PASSAGE AT A POINT INTERMEDIATE SAID FIXED AND SAID VARIABLE RESTRICTION AND THE MECHANISM INTEDED TO BE TESTED, AND AMPLITUDE CONTROL MEANS INCLUDING A
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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |