Patent US3701284A successfully refreshed from Google Patents.
US3701284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure gauge
Assignee: Colorado Manufacturing Corp
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Filing: 1970-09-21
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Granted: 1972-10-31
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Expires: 1990-09-21
Abstract
Abstract A sliding, radial compression seal is provided between the main gauge casing and a movable blow-out closure element, in a fluidfilled pressure gauge, with yieldable retention of the closure in its normal case closing position. The closure seal insures maintenance of an effective fluig-tight seal of the gauge housing under normal conditions while permitting ready movement of the closure for release of unusual internal pressures.
Inventors
- 👤 Roy W De Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:52
CPC Classifications
G; G01; G01L; G01L19/00; G01L19/06; G01L19/0618; G01L19/0672; G01L7/00; G01L7/02; G01L7/04; G01L7/043; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7898; Y10T137/7902
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
176 words
A liquid filled pressure gauge assembly comprising pressure responsive mechanism, a housing enclosing said mechanism, and liquid substantially filling said housing, said housing including a case having an opening delineated by an internal surface of a portion of said case, and a removable blow-out closure disposed within said opening and having an outer peripheral surface which conforms generally to said internal surface and is in adjacent opposed relation to said internal surface, and resilient sealing means in radial compressIve sealing engagement between said outer peripheral surface of said closure and said adjacent internal surface of said case to provide a liquid-tight closure of said opening, one of said surfaces being a cylindrical surface extending parallel to an axis through said opening and of sufficient axial extent to permit relative sliding movement between said resilient means and said cylindrical surface parallel to said axis for disengagement of said closure from sealing engagement with said case to release fluid pressure from within said housing, and means for yieldably retaining said closure in such sealing engagement in said opening.
Claim 2
Dependent Claim
176 words
A liquid filled pressure gauge assembly comprising pressure responsive mechanism, a housing enclosing said mechanism, and liquid substantially filling said housing, said housing including a case having an opening delineated by an internal surface of a portion of said case, and a removable blow-out closure disposed within said opening and having an outer peripheral surface which conforms generally to said internal surface and is in adjacent opposed relation to said internal surface, and resilient sealing means in radial compressIve sealing engagement between said outer peripheral surface of said closure and said adjacent internal surface of said case to provide a liquid-tight closure of said opening, one of said surfaces being a cylindrical surface extending parallel to an axis through said opening and of sufficient axial extent to permit relative sliding movement between said resilient means and said cylindrical surface parallel to said axis for disengagement of said closure from sealing engagement with said case to release fluid pressure from within said housing, and means for yieldably retaining said closure in such sealing engagement in said opening.
Claim 3
Dependent Claim
23 words
A pressure gauge as in claim 1 wherein said retaining means comprises a yieldable member attached to said case and to said closure.
Claim 4
Dependent Claim
15 words
A pressure gauge as in claim 2 wherein said yieldable member comprises a bendable element.
Claim 5
Dependent Claim
15 words
A pressure gauge as in claim 1 wherein said cylindrical surface comprises said internal surface.
Claim 6
Dependent Claim
16 words
A pressure gauge as in claim 1 wherein said cylindrical surface comprises said outer peripheral surface.
Claim 7
Dependent Claim
41 words
A pressure gauge as in claim 1 wherein said internal surface is a right circular cylindrical surface extending outward through one side of said case, said closure being a circular plate, and said resilient sealing means being mounted on said closure.
Claim 8
Dependent Claim
18 words
A pressure gauge as in claim 7 wherein said resilient sealing means is an O-ring circumscribing said closure.
Claim 9
Dependent Claim
63 words
A pressure gauge as in claim 1 including a connection socket extending through said opening for communication with a fluid system and having an annular sealing surface, said closure having an annular surface extending circumjacent said annular sealing surface of said socket, and resilient sealing means between and in compressive sealing engagement with said annular surfaces of said connection socket and said closure.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |