Patent US3679326A successfully refreshed from Google Patents.
US3679326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump control
Assignee: Weber Ind Inc
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Filing: 1970-10-19
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Granted: 1972-07-25
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Expires: 1990-10-19
Abstract
Abstract A pump control for use within a pump system and being connected to the discharge pipe therefor; there being a check valve between the pump control and the outlet pipe. Said control comprises a pipe having a plurality of openings which pipe connects said valve and a pressure switch in circuit controlling relationship with respect to the pump with a pressure accumulator disposed about said pipe and constituting a resilient sleeve having a thickness of about one-half inch and a durometer hardness within the range of 55 to 70.
Inventors
- 👤 Anthony V Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:58
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/02; F04B49/022
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
308 words
For use in a liquid pumping system having a pump and a discharge pipe connected to said pump; a pump control comprising a valve body; conduit-forming means connecting said valve body to said discharge pipe; valve means provided in said valve body for subjection to liquid pressure within said discharge pipe; means defining a tubular member connected to said valve body and extending therefrom opposite said discharge pipe and being coaxially aligned therewith; means adjacent said valve means for establishing continuous connection between said discharge pipe and said tubular member; said tubular member having a plurality of spaced-apart openings for liquid flow therethrough; means defining a pressure accumulator of sleeve-form disposed surroundingly of the portion of said tubular member having openings; said pressure accumulator having a thickness of approximately one half inch and a durometer hardness within the range of 55-70, said pressure accumulator being resilient for expansion under pressure within the range of approximately 50-70 psi so as to develop relative force upon contraction; means for securing said pressure accumulator in its end portions in leakproof relationship on said tubular member so that the intervening portion may be expanded under predetermined pressure of liquid passing through said tubular member openings to develop a relatively volumetrically small pressure chamber; said pressure accumulator having a ratio of its thickness to its length between said securing means being within the range of approximately 4:1 to 8:1, rigid case-forming means disposed surroundingly of said pressure accumulator, the normal spacing between said pressure accumulator and said rigid case-forming means being within the range of five thirty-seconds to seven thirty-seconds inches; a switch operable responsive to said liquid pressure within said tubular member; means connecting said pressure switch and said tubular member at the end of the latter remote from said valve body; and means operatively connecting said pressure switch and said pump.
Claim 2
Dependent Claim
308 words
For use in a liquid pumping system having a pump and a discharge pipe connected to said pump; a pump control comprising a valve body; conduit-forming means connecting said valve body to said discharge pipe; valve means provided in said valve body for subjection to liquid pressure within said discharge pipe; means defining a tubular member connected to said valve body and extending therefrom opposite said discharge pipe and being coaxially aligned therewith; means adjacent said valve means for establishing continuous connection between said discharge pipe and said tubular member; said tubular member having a plurality of spaced-apart openings for liquid flow therethrough; means defining a pressure accumulator of sleeve-form disposed surroundingly of the portion of said tubular member having openings; said pressure accumulator having a thickness of approximately one half inch and a durometer hardness within the range of 55-70, said pressure accumulator being resilient for expansion under pressure within the range of approximately 50-70 psi so as to develop relative force upon contraction; means for securing said pressure accumulator in its end portions in leakproof relationship on said tubular member so that the intervening portion may be expanded under predetermined pressure of liquid passing through said tubular member openings to develop a relatively volumetrically small pressure chamber; said pressure accumulator having a ratio of its thickness to its length between said securing means being within the range of approximately 4:1 to 8:1, rigid case-forming means disposed surroundingly of said pressure accumulator, the normal spacing between said pressure accumulator and said rigid case-forming means being within the range of five thirty-seconds to seven thirty-seconds inches; a switch operable responsive to said liquid pressure within said tubular member; means connecting said pressure switch and said tubular member at the end of the latter remote from said valve body; and means operatively connecting said pressure switch and said pump.
Claim 3
Dependent Claim
243 words
For use in a liquid pumping system having a pump and a discharge pipe connected to said pump; a pump control comprising a valve body; conduit-forming means connecting said valve body to said discharge pipe; valve means provided in said valve body for subjection to liquid pressure within said discharge pipe; means defining a tubular member connected to said valve body and extending therefrom opposite said discharge pipe and being co-axially aligned therewith; means defining a port adjacent said valve means for establishing continuous connection between said discharge pipe and said tubular member; means mounted in said valve body proximate said port for facilitating clearance of matter accidentally lodged therein; said tubular member having a plurality of spaced-apart openings for liquid flow therethrough; means defining a pressure accumulator of sleeve-form disposed surroundingly of the portion of said tubular member having openings; said pressure accumulator being resilient and relatively thick so as to develop relative force upon contraction; means for securing said pressure accumulator in its end portions in leak-proof relationship on said tubular member so that the intervening portion may be expanded under predetermined pressure of liquid passing thRough said tubular member openings to develop a relatively volumetrically small pressure chamber; a switch operable responsive to said liquid pressure within said tubular member; means connecting said pressure switch and said tubular member at the end of the latter remote from said valve body; and means operatively connecting said pressure switch and said pump.
Claim 4
Dependent Claim
243 words
For use in a liquid pumping system having a pump and a discharge pipe connected to said pump; a pump control comprising a valve body; conduit-forming means connecting said valve body to said discharge pipe; valve means provided in said valve body for subjection to liquid pressure within said discharge pipe; means defining a tubular member connected to said valve body and extending therefrom opposite said discharge pipe and being co-axially aligned therewith; means defining a port adjacent said valve means for establishing continuous connection between said discharge pipe and said tubular member; means mounted in said valve body proximate said port for facilitating clearance of matter accidentally lodged therein; said tubular member having a plurality of spaced-apart openings for liquid flow therethrough; means defining a pressure accumulator of sleeve-form disposed surroundingly of the portion of said tubular member having openings; said pressure accumulator being resilient and relatively thick so as to develop relative force upon contraction; means for securing said pressure accumulator in its end portions in leak-proof relationship on said tubular member so that the intervening portion may be expanded under predetermined pressure of liquid passing thRough said tubular member openings to develop a relatively volumetrically small pressure chamber; a switch operable responsive to said liquid pressure within said tubular member; means connecting said pressure switch and said tubular member at the end of the latter remote from said valve body; and means operatively connecting said pressure switch and said pump.
Claim 5
Dependent Claim
69 words
The invention as defined in claim 2 and further characterized by said means mounted in said valve body said valve body having a chamber, a plunger disposed in said chamber and being axially aligned with said port, resilient means provided within said chamber and urging said plunger away from said port, said plunger having an end portion dimensioned for reception within said port upon stressing of said resilient means.
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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |