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US3598323A
Expired / Lapsed
US
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Pressure accumulator
Assignee: Freeport Mcmoran Resource Partners Ltd
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Filing: 1969-07-22
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Granted: 1971-08-10
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Expires: 1989-07-22
Abstract
Abstract An ejector device is disclosed which receives liquid from a high-pressure source, accumulates the liquid until its volume is built up sufficiently to compress a portion thereof and, after taking up lost motion, a lifter spring, at which time a valve is snapped open to a detent position; when a predetermined volume of liquid has been discharged, a return spring snaps the valve shut to complete the cycle.
Inventors
- 👤 Douglas Johnston
- 👤 Harold Scott Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:02
CPC Classifications
F; F16; F16K; F16K21/00; F16K21/04; F16K21/16
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
193 words
A hydraulic device for intermittently ejecting slugs of liquid under pressure which comprises: a. a first elongated chamber having means to receive an inlet flow of said liquid; b. a second chamber adjacent to said first chamber and having a wall in common therewith; c. piston means through said wall reciprocable in said first and said second chambers; d. passage means communicating between said first and said second chambers; e. valve means responsive to an increase in pressure within said second chamber to close said passage means; f. orifice means communicating with said first chamber; g. valve rod means axially reciprocable within said first chamber between a first position in closing engagement with said orifice means and a second position withdrawn from said orifice means; h. detent means for yieldably retaining said valve rod means in said second position; i. coupling means for connecting said piston means with said valve rod means with lost motion; j. first spring means compressible by relative axial motion of said piston means away from said valve rod means; and k. second spring means compressible by relative axial motion of said piston means toward said valve rod means.
Claim 2
Dependent Claim
193 words
A hydraulic device for intermittently ejecting slugs of liquid under pressure which comprises: a. a first elongated chamber having means to receive an inlet flow of said liquid; b. a second chamber adjacent to said first chamber and having a wall in common therewith; c. piston means through said wall reciprocable in said first and said second chambers; d. passage means communicating between said first and said second chambers; e. valve means responsive to an increase in pressure within said second chamber to close said passage means; f. orifice means communicating with said first chamber; g. valve rod means axially reciprocable within said first chamber between a first position in closing engagement with said orifice means and a second position withdrawn from said orifice means; h. detent means for yieldably retaining said valve rod means in said second position; i. coupling means for connecting said piston means with said valve rod means with lost motion; j. first spring means compressible by relative axial motion of said piston means away from said valve rod means; and k. second spring means compressible by relative axial motion of said piston means toward said valve rod means.
Claim 3
Dependent Claim
57 words
The device of claim 1 further provided with pressure relief means comprising: a. second piston means communicating with said second chamber; b. third spring means urging said second piston means inwardly of said second chamber; and c. second valve means in a wall of said second chamber actuable by outward movement of said second piston means therefrom.
References Cited (Backward Citations)
US2930334A
Cited
US3012526A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |