US3920047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas fitting for pressure accumulator
Assignee: EXOL Inc A CORP OF DE
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Filing: 1974-03-22
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Granted: 1975-11-18
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Expires: 1994-03-22
Abstract
Abstract This invention relates to the art of hydraulic accumulators, more particularly of the type including a rigid container having a pair of ports at its respective ends with a deformable bladder separating two fluids such as gas and liquid under pressure. The bladder has a thickened portion at one end with a reduced diameter axial bore therethrough having an annular groove therein in which is releasably positioned the base flange of a substantially cylindrical fitting which contains a gas passage therethrough, the fitting extending through the corresponding port of the container to secure the bladder in position for charging with gas under pressure.
Inventors
- 👤 Jacques H Mercier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:26
CPC Classifications
F; F16; F16J; F16J12/00; F15; F15B; F15B1/00; F15B1/02; F15B1/04; F15B1/08; F15B1/10; F15B1/16; F15B1/165; F16L; F16L55/00; F16L55/04; F16L55/045; F16L55/05; F16L55/052; F15B2201/00; F15B2201/20; F15B2201/205; F15B2201/30; F15B2201/315; F15B2201/3152; F15B2201/40; F15B2201/41; F15B2201/411; F15B2201/415; F15B2201/4155; F15B2201/43; F15B2201/435
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
225 words
A bladder assembly for a pressure vessel comprising a bladder and a fitting, said bladder being of resilient deformable material, substantially circular in cross section and having a thickened portion at one end axially aligned with the longitudinal axis of the bladder, said thickened portion having an axial bore therethrough, said axial bore having an annular groove in the wall thereof, said fitting being of rigid material comprising a stem portion with a base disc at one end having an outstanding annular flange of diameter substantially equal to the diameter of said annular groove to be accommodated therein, said fitting having a cylindrical hub portion integral therewith between the root end of the stem portion and said base disc, said hub portion being of diameter greater than that of said stem portion and less than that of said base diSc, the junction betwen said hub and the root end of said stem defining an annular shoulder substantially aligned with the plane of the outer end of said axial bore, the outer surface of said bladder adjacent the bore and encompassing the latter having an outstanding annular bead rising above the plane of the annular shoulder defined by the hub and a clearance space defined in said fitting adjacent the inner end of said bore, between the base disc and the adjacent portion of the bladder.
Claim 2
Dependent Claim
225 words
A bladder assembly for a pressure vessel comprising a bladder and a fitting, said bladder being of resilient deformable material, substantially circular in cross section and having a thickened portion at one end axially aligned with the longitudinal axis of the bladder, said thickened portion having an axial bore therethrough, said axial bore having an annular groove in the wall thereof, said fitting being of rigid material comprising a stem portion with a base disc at one end having an outstanding annular flange of diameter substantially equal to the diameter of said annular groove to be accommodated therein, said fitting having a cylindrical hub portion integral therewith between the root end of the stem portion and said base disc, said hub portion being of diameter greater than that of said stem portion and less than that of said base diSc, the junction betwen said hub and the root end of said stem defining an annular shoulder substantially aligned with the plane of the outer end of said axial bore, the outer surface of said bladder adjacent the bore and encompassing the latter having an outstanding annular bead rising above the plane of the annular shoulder defined by the hub and a clearance space defined in said fitting adjacent the inner end of said bore, between the base disc and the adjacent portion of the bladder.
Claim 3
Dependent Claim
54 words
The combination set forth in claim 1 in which said fitting has a frusto-conical portion formed integral therewith between said hub and said base disc, the side wall of said frustoconical portion being spaced from the wall of the bore in said bladder when the fitting is mounted therein to provide said clearance space.
Claim 4
Dependent Claim
49 words
The combination set forth in claim 1 in which the annular flange of said base disc is of greater thickness at its outer periphery than at its root end, said clearance space being provided between the top surface of said flange and the top surface of said annular groove.
Claim 5
Dependent Claim
35 words
The combination set forth in claim 1 in which the lower surface of said annular groove is defined by a plurality of circumferentially spaced legs extending inwardly from the root end of said annular groove.
References Cited (Backward Citations)
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US3067776A
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US3232318A
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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) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |