Patent US3623512A successfully refreshed from Google Patents.
US3623512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure reservoir
Assignee: Robert Bosch GmbH
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Filing: 1969-11-26
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Granted: 1971-11-30
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Expires: 1989-11-26
Abstract
Abstract An upper gas chamber and a lower pressure fluid chamber separated from each other by a diaphragm deflectable in direction of the gas chamber in response to pressure fluid admitted into the lower chamber. The diaphragm comprises a peripheral portion which, by means of an annular element, is sealingly pressed against the inner wall of the reservoir. The annular element has an arcuately curved circumferential guide surface which faces towards the fluid pressure chamber such that upon admittance of a fluid pressure in this latter chamber the center portion of the diaphragm is deflected into the gas chamber whereby the peripheral portion contacts the guide surface of the annular element and is thereby arcuately deformed which avoids acute bending and consequent breaking of the peripheral portion.
Inventors
- 👤 Hans Ellwanger
- 👤 Herbert Trautewein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:23
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/04; F16L55/045; F16L55/05; F16L55/052; F15; F15B; F15B1/00; F15B1/02; F15B1/04; F15B1/08; F15B1/10; F15B1/12; F15B1/14; F15B2201/00; F15B2201/20; F15B2201/205; F15B2201/30; F15B2201/315; F15B2201/3151; F15B2201/3156; F15B2201/40; F15B2201/415; F15B2201/43; F15B2201/435
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
225 words
A fluid-actuated device, particularly a pressure reservoir, comprising wall means defining an enclosed space; a diaphragm subdividing said enclosed spaced into two chambers and comprising a peripheral portion engaging said wall means and a center portion arranged to be deflected into one of said chambers in response to admission of pressure fluid into the other of said chambers; a single annular element comprising a cylindrical portion pressing said peripheral portion of said diaphragm into sealing engagement with said wall means and an adjacent portion integral with said peripheral portion and having an arcuately curved guide face extending radially inwardly from said cylindrical portion and facing said other chamber, said arcuately curved guide face having in an axial cross section of said annular element a diameter about twice the wall thickness of said diaphragm; and inlet means for admitting pressure fluid into the other of said chambers, whereby upon admitting of pressure fluid into said other chamber a portion of said diaphragm adjacent said peripheral portion contacts said guide face and is arcuately deformed to thereby avoid sharp bending between the peripheral portion and said center portion of said diaphragm, and said diaphragm is free of contact with said arcuately curved guide face and in contact with said wall means when the pressure in said one of said chambers overcomes the pressure in said other chamber.
Claim 2
Dependent Claim
225 words
A fluid-actuated device, particularly a pressure reservoir, comprising wall means defining an enclosed space; a diaphragm subdividing said enclosed spaced into two chambers and comprising a peripheral portion engaging said wall means and a center portion arranged to be deflected into one of said chambers in response to admission of pressure fluid into the other of said chambers; a single annular element comprising a cylindrical portion pressing said peripheral portion of said diaphragm into sealing engagement with said wall means and an adjacent portion integral with said peripheral portion and having an arcuately curved guide face extending radially inwardly from said cylindrical portion and facing said other chamber, said arcuately curved guide face having in an axial cross section of said annular element a diameter about twice the wall thickness of said diaphragm; and inlet means for admitting pressure fluid into the other of said chambers, whereby upon admitting of pressure fluid into said other chamber a portion of said diaphragm adjacent said peripheral portion contacts said guide face and is arcuately deformed to thereby avoid sharp bending between the peripheral portion and said center portion of said diaphragm, and said diaphragm is free of contact with said arcuately curved guide face and in contact with said wall means when the pressure in said one of said chambers overcomes the pressure in said other chamber.
Claim 3
Dependent Claim
43 words
A device as defined in claim 1, wherein said peripheral portion of said diaphragm comprises a lateral outwardly directed circumferential projection sealably received in a peripheral groove in said wall means in said other chamber to tightly secure said diaphragm in the same.
Claim 4
Dependent Claim
15 words
A device as defined in claiM 1, wherein said annular element is an expansion ring.
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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |