US3299907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulsation dampener
Assignee: American Radiator and Standard Sanitary Corp
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Filing: 1963-12-16
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Granted: 1967-01-24
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Expires: 1983-12-16
Abstract
No abstract record available.
Inventors
- 👤 Wolcott David Ames
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:11
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/04; F16L55/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A PULSATION DAMPENER COMPRISING A PASSAGEWAY HAVING TWO RELATIVELY SMALL PASSAGE SECTIONS AND AN ENLARGED PRESSURE CHAMBER THEREBETWEEN; SAID CHAMBER FORMING TWO SPACED SEATING SURFACES AT ITS JUNCTURES WITH THE PASSAGE SECTIONS; AND A FLOW-RESTRICTING ELEMENT FLOATABLY DISPOSED IN THE CHAMBER FOR MOVEMENTS BACK AND FORTH BETWEEN THE PASSAGE SECTIONS; SAID CHAMBER AND RESTRICTING ELEMENT BEING DIMENSIONED SO THAT THE ELEMENT HAS SUBSTANTIALLY NO RESTRICTING ACTION WHEN IN AN INTERMEDIATE POSITION, BUT HAS A PROGRESSIVELY INCREASING RESTRICTING ACTION AS IT MOVES INCREMENTALLY FROM THE INTER-
Claim 2
Dependent Claim
85 words
A PULSATION DAMPENER COMPRISING A PASSAGEWAY HAVING TWO RELATIVELY SMALL PASSAGE SECTIONS AND AN ENLARGED PRESSURE CHAMBER THEREBETWEEN; SAID CHAMBER FORMING TWO SPACED SEATING SURFACES AT ITS JUNCTURES WITH THE PASSAGE SECTIONS; AND A FLOW-RESTRICTING ELEMENT FLOATABLY DISPOSED IN THE CHAMBER FOR MOVEMENTS BACK AND FORTH BETWEEN THE PASSAGE SECTIONS; SAID CHAMBER AND RESTRICTING ELEMENT BEING DIMENSIONED SO THAT THE ELEMENT HAS SUBSTANTIALLY NO RESTRICTING ACTION WHEN IN AN INTERMEDIATE POSITION, BUT HAS A PROGRESSIVELY INCREASING RESTRICTING ACTION AS IT MOVES INCREMENTALLY FROM THE INTER-
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) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |