US3322147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure actuated tube compressor valve
Assignee: Individual
•
Filing: 1964-04-15
•
Granted: 1967-05-30
•
Expires: 1984-04-15
Abstract
No abstract record available.
Inventors
- 👤 Martin R Barrows
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:05
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/02; F16K7/04; F16K7/07; Y; Y10; Y10T; Y10T137/00; Y10T137/4456; Y10T137/4643; Y10T137/8593; Y10T137/87153; Y10T137/87161
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A VALVE CONSISTING ESSENTIALLY OF: A BODY; A PRESSURE CHAMBER IN THE BODY; A MAGNETICALLY HARDENABLE HYDRAULIC LIQUID IN THE PRESSURE CHAMBER; AT LEAST ONE FLEXIBLE TUBE IMMERSED IN THE HYDRAULIC LIQUID, EACH TUBE HAVING THE RESILIENCY TO RETURN TO NORMAL DIMENSIONS AFTER BEING SQUEEZED; MEANS FOR MAKING SELECTED INCREASES AND SELECTED DECREASES IN THE PRESSURE OF THE HYDRAULIC LIQUID, WHEREBY EACH FLEXIBLE TUBE MAY BE SQUEEZED IN SPHINCTER VALVE ACTION TO CONSTRICT THE FLOW THROUGH A FLEXIBLE TUBE AND WHEREBY SUCH SQUEEZING MAY BE RELEASED; AN ELECTROMAGNET POSITIONED TO IMPART A MAGNETIC FIELD TO THE MAGNETICALLY HARDENABLE HYDRAULIC LIQUID; AND SWITCHING MEANS FOR THE ELECTROMAGNET.
Claim 2
Dependent Claim
106 words
A VALVE CONSISTING ESSENTIALLY OF: A BODY; A PRESSURE CHAMBER IN THE BODY; A MAGNETICALLY HARDENABLE HYDRAULIC LIQUID IN THE PRESSURE CHAMBER; AT LEAST ONE FLEXIBLE TUBE IMMERSED IN THE HYDRAULIC LIQUID, EACH TUBE HAVING THE RESILIENCY TO RETURN TO NORMAL DIMENSIONS AFTER BEING SQUEEZED; MEANS FOR MAKING SELECTED INCREASES AND SELECTED DECREASES IN THE PRESSURE OF THE HYDRAULIC LIQUID, WHEREBY EACH FLEXIBLE TUBE MAY BE SQUEEZED IN SPHINCTER VALVE ACTION TO CONSTRICT THE FLOW THROUGH A FLEXIBLE TUBE AND WHEREBY SUCH SQUEEZING MAY BE RELEASED; AN ELECTROMAGNET POSITIONED TO IMPART A MAGNETIC FIELD TO THE MAGNETICALLY HARDENABLE HYDRAULIC LIQUID; AND SWITCHING MEANS FOR THE ELECTROMAGNET.
References Cited (Backward Citations)
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US2667237A
Cited
US2820471A
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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) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |