US3276464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pulse width modulator
Assignee: Bowles Engineering Corp
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Filing: 1965-10-21
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Granted: 1966-10-04
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Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 Eric E Metzger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:54
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/08; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2229; Y10T137/2234; Y10T137/224
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A PURE FLUID PULSE WIDTH MODULATOR COMPRISING A PURE FLUID AMPLIFIER OF THE BOUNDARY LAYER TYPE INCLUDING INTERACTION CHAMBER FOR RECEIVING FLUID STREAMS, A POWER NOZZLE FOR ISSUING A DEFINED POWER STREAM INTO SAID INTOACTION CHAMBER, PLURAL OUTPUT PASSAGES FOR RECEIVING THE POWER STREAM, A PAIR OF SUBSTANTIALLY OPPOSED CONTROL NOZZLES POSITIONED TO EFFECT DISPLACEMENT OF THE POWER STREAM RELATIVE TO THE OUTPUT PASSAGE BY FLUID EGRESSING THEREFROM AT AN ANGLE WITH RESPECT TO THE DIRECTION OF POWER STREAM FLOW, FLUID CONVEYING MEANS CONNECTING SAID CONTROL NOZZLES AND PRODUCING ALTERNATING FLUID PULSES IN SAID CONTROL NOZZLES, AT LEAST ONE CONVOLUTION FORMED IN SAID CONVEYING MEANS; AND MEANS OF ROTATING THE MODULATOR ABOUT AN AXIS SUBSTANTIALLY PARALLEL TO THE AXIS OF THE CONVOLUTION.
Claim 2
Dependent Claim
122 words
A PURE FLUID PULSE WIDTH MODULATOR COMPRISING A PURE FLUID AMPLIFIER OF THE BOUNDARY LAYER TYPE INCLUDING INTERACTION CHAMBER FOR RECEIVING FLUID STREAMS, A POWER NOZZLE FOR ISSUING A DEFINED POWER STREAM INTO SAID INTOACTION CHAMBER, PLURAL OUTPUT PASSAGES FOR RECEIVING THE POWER STREAM, A PAIR OF SUBSTANTIALLY OPPOSED CONTROL NOZZLES POSITIONED TO EFFECT DISPLACEMENT OF THE POWER STREAM RELATIVE TO THE OUTPUT PASSAGE BY FLUID EGRESSING THEREFROM AT AN ANGLE WITH RESPECT TO THE DIRECTION OF POWER STREAM FLOW, FLUID CONVEYING MEANS CONNECTING SAID CONTROL NOZZLES AND PRODUCING ALTERNATING FLUID PULSES IN SAID CONTROL NOZZLES, AT LEAST ONE CONVOLUTION FORMED IN SAID CONVEYING MEANS; AND MEANS OF ROTATING THE MODULATOR ABOUT AN AXIS SUBSTANTIALLY PARALLEL TO THE AXIS OF THE CONVOLUTION.
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |