Patent US2604579A successfully refreshed from Google Patents.
Patent US3858014A successfully refreshed from Google Patents.
US3858014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gauge and switch diaphragm protector
Assignee: Individual
•
Filing: 1973-10-19
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Granted: 1974-12-31
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Expires: 1993-10-19
Abstract
Abstract A gauge and switch diaphragm protector comprising an expansion chamber mountable in a fluid conduit between the pressure source and pump switch, having sand diverting baffles mounted therein, adapted to divert sand in the fluid to the outer wall of the chamber without diminishing the pressure of the fluid.
Inventors
- 👤 G Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:36
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/26; H01H35/30
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
88 words
In a means for diverting sand in a fluid conduit to prevent an accumulation beneath the diaphragm of an electrical switch in connection therewith, a diaphragm operated switch mechanism, a pressure line leading from a source of pressure to said mechanism for the conduct of fluid containing sand, an expansion chamber in said line between said source of pressure and said diaphragm operated mechanism, baffle means in said chamber across the flow line of fluid therethrough diverting sand in said fluid to the outside walls of said chamber.
Claim 2
Dependent Claim
88 words
In a means for diverting sand in a fluid conduit to prevent an accumulation beneath the diaphragm of an electrical switch in connection therewith, a diaphragm operated switch mechanism, a pressure line leading from a source of pressure to said mechanism for the conduct of fluid containing sand, an expansion chamber in said line between said source of pressure and said diaphragm operated mechanism, baffle means in said chamber across the flow line of fluid therethrough diverting sand in said fluid to the outside walls of said chamber.
Claim 3
Dependent Claim
17 words
The device defined in claim 1 wherein said baffles are disc-like members mounted in the expansion chamber.
Claim 4
Dependent Claim
52 words
The device defined in claim 1 wherein said baffles are spaced discs, one of said discs being of greater diameter than the other, and said disc of greater diameter being mounted on the inside wall of said chamber and the lesser diameter disc being spaced from the other disc and mounted thereon.
Claim 5
Dependent Claim
16 words
The device defined in claim 1 wherein said baffles are spaced discs having fluid passageways therebetween.
References Cited (Backward Citations)
US2598818A
Cited
US2775205A
Cited
US3016147A
Cited
US3027010A
Cited
US3114320A
Cited
US3291307A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |