US4880366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic hand lift pressure pump
Assignee: Individual
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Filing: 1988-09-06
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Granted: 1989-11-14
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Expires: 2008-09-06
Abstract
Abstract A hand lift pressure pump presenting all components molded from ABS resin, PVC or other thermoplastic material so that the pump can be readily incorporated into any given installation utilizing thermoplastic conduits, fittings, adaptors and the like. In other words, the invention simplifies installation and overcomes basic difficulties in prior pumps fabricated from cast iron. The pump at hand is adapted to various end installations, including, by way of example, in connection with a driven well, a pressure system, for elevated storage and, additionally, a remote liquid or water supply, i.e. to eliminate water carrying.
Inventors
- 👤 Larry A. Stinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:44
CPC Classifications
F; F04; F04B; F04B47/00; F04B47/02; F04B47/024; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/791
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A pressure pump comprising a hollow body portion having open ends and including a built-in check valve received in a bushing at one end thereof and means limiting movement of said built-in check valve, a plug member overlying said body portion and disposed within the other end thereof, a plunger rod extending through said plug member, a handle pivotally secured to an end of said plunger rod, and linkage means interconnecting said handle and said plug member, where said hollow body portion including said built-in check valve, said bushing and said limiting means, said plug member, said plunger rod, said handle and said linkage means are fabricated from thermoplastic material, and where said built-in check valve includes a mineral filled ball also fabricated from thermoplastic material.
Claim 2
Dependent Claim
126 words
A pressure pump comprising a hollow body portion having open ends and including a built-in check valve received in a bushing at one end thereof and means limiting movement of said built-in check valve, a plug member overlying said body portion and disposed within the other end thereof, a plunger rod extending through said plug member, a handle pivotally secured to an end of said plunger rod, and linkage means interconnecting said handle and said plug member, where said hollow body portion including said built-in check valve, said bushing and said limiting means, said plug member, said plunger rod, said handle and said linkage means are fabricated from thermoplastic material, and where said built-in check valve includes a mineral filled ball also fabricated from thermoplastic material.
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) | 1992-11-13 | 1993-05-15 | 1993-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-13 | 1997-05-15 | 1997-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-13 | 2001-05-15 | 2001-11-14 | $7700.00 | Window Closed / Lapsed |