Patent US1841228A successfully refreshed from Google Patents.
Patent US3921455A successfully refreshed from Google Patents.
US3921455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manometer
Assignee: Haenni and Cie AG
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Filing: 1974-04-02
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Granted: 1975-11-25
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Expires: 1994-04-02
Abstract
Abstract A case of a manometer comprises a cup-shaped case body, the peripheripheral wall of which has an outwardly protruding flattened wall zone surrounding an aperture. Within the case a support-piece carries pressure-measuring- and indicating means and, together with an outer connecting piece fluid-tightly mounted on an outer portion thereof, grips the flat wall portion in a fluid-tight manner.
Inventors
- 👤 Alfons Staubli
- 👤 Hans Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:57
CPC Classifications
G; G01; G01L; G01L7/00; G01L7/02; G01L7/04; G01L7/043
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
196 words
A manometer comprising a case including a case body having a cup-shaped sheet-metal part and having an aperture and an outward protrusion with a flat wall zone surrounding the aperture, a support piece including a prismatic portion arranged within the case, and ending at a shoulder which rests on said flat wall zone, the contour of which is adapted to the outer contour of the shoulder, said support piece also including an outer portion extending from said prismatic portion at said shoulder through said aperture, an outer connecting piece having a bore and fitted in a fluid-tight manner to the outer portion of the support piece and firmly engaging said flat wall zone of the case body, a fluid-pressure measuring spring tube having a free end and an end secured to the prismatic portion of the support piece and an inner space connected with the bore of the outer connecting piece through a passageway provided in the support piece, and means arranged within the case, supported by the prismatic portion of the support piece and operatively connected to the free end of said fluid-pressure measuring spring tube, for indicating the measured fluid-pressure acting in that tube.
Claim 2
Dependent Claim
196 words
A manometer comprising a case including a case body having a cup-shaped sheet-metal part and having an aperture and an outward protrusion with a flat wall zone surrounding the aperture, a support piece including a prismatic portion arranged within the case, and ending at a shoulder which rests on said flat wall zone, the contour of which is adapted to the outer contour of the shoulder, said support piece also including an outer portion extending from said prismatic portion at said shoulder through said aperture, an outer connecting piece having a bore and fitted in a fluid-tight manner to the outer portion of the support piece and firmly engaging said flat wall zone of the case body, a fluid-pressure measuring spring tube having a free end and an end secured to the prismatic portion of the support piece and an inner space connected with the bore of the outer connecting piece through a passageway provided in the support piece, and means arranged within the case, supported by the prismatic portion of the support piece and operatively connected to the free end of said fluid-pressure measuring spring tube, for indicating the measured fluid-pressure acting in that tube.
Claim 3
Dependent Claim
62 words
A manometer as defined in claim 1, wherein the bore of the outer connecting piece is staggered, a wider portion of same being screwed onto the outer portion of the support piece and a rim at a staggered part of the bore being in fluid-tight engagement with a conical outer surface of an extension of the outer portion of the support piece.
Claim 4
Dependent Claim
40 words
A manometer as defined in claim 1, wherein the prismatic portion of the support piece has an annular groove cut in its shoulder, and a sealing ring resting in that groove engages the flat wall zone of the case body.
Claim 5
Dependent Claim
54 words
A manometer as defined in claim 1, wherein the case comprises a sheet-metal ring set upon the rim of the cup-shaped case body, a resilient ring held partly in said sheet-metal ring and partly in the portion of the case body adjoining the rim, and a transparent window shield embedded in said resilient ring.
Claim 6
Dependent Claim
23 words
A manometer as defined in claim 1, wherein said flat wall zone is formed in the peripheral wall of the cup-shaped case body.
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) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |