US3881519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure vessel
Assignee: GREE HYDRAULICS OF CALIFORNIA Inc
•
Filing: 1973-06-05
•
Granted: 1975-05-06
•
Expires: 1993-06-05
Abstract
Abstract This invention relates to the art of pressure vessels of the type comprising a rigid container having an opening at one end and an oil port at its other end. The container has a deformable partition therein intervening between the opening and the oil port and defining a gas chamber and an oil chamber. A rigid member is secured in the opening of the container and has a bore therethrough. A layer of resilient material, which defines a disc portion extends over the inner end of the bore. The periphery of such disc portion is bonded to the surface of the rigid member through which the inner end of the bore extends, said disc portion having passage means therethrough positioned between the bonded periphery thereof and the axis thereof, the inner end of such passage means normally abutting against such surface, the portion of said disc inwardly of its bonded periphery being movable away from such surface.
Inventors
- 👤 Abduz Zahid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:13
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; F16J; F16J12/00; F15B2201/00; F15B2201/20; F15B2201/205; F15B2201/30; F15B2201/315; F15B2201/3151; F15B2201/3156; F15B2201/40; F15B2201/41; F15B2201/415; F15B2201/4155; F15B2201/43; F16K; F16K15/00; F16K15/14; F16K15/144
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
303 words
A pressure vessel comprising a container of rigid material having an opening at one end and an oil port at the other end, a deformable partition in said container intervening between said opening and said oil port and defining a gas chamber and an oil chamber on opposed sides thereof respectively, a rigid member secured in said opening and presenting a generally planar inner surface, said member having a bore therethrough defining a gas port having its inner end opening through said inner surface adjacent said gas chamber, a layer of resilient material generally paralleling and overlying said inner surface and defining a disc portion extending over the inner end of said bore, the periphery of said disc portion being bonded to the inner surface of said rigid member through which the inner end of said bore opens, the central portion of said disc portion being movable toward and away from said surface and having passage means therethrough with one end opening toward the rigid member inner surface whereby gas introduced under pressure through said gas port may be charged into the gas chamber, said passage means being positioned laterally remote from said gas port and between the bonded periphery and the axis of said portion, the central portion of said disc portion, in the relaxed position thereof, being retained against said surface of said rigid member and both closing and sealing said gas port by engagement of the disc portion against the inner end of the bore and both closing and sealing said passage means by engagement of said one end of the passage means against the inner surface of the rigid member, said central portion upon movement away from said surface, opening both the gas port and the passage means to provide communication between said gas port and said gas chamber.
Claim 2
Dependent Claim
303 words
A pressure vessel comprising a container of rigid material having an opening at one end and an oil port at the other end, a deformable partition in said container intervening between said opening and said oil port and defining a gas chamber and an oil chamber on opposed sides thereof respectively, a rigid member secured in said opening and presenting a generally planar inner surface, said member having a bore therethrough defining a gas port having its inner end opening through said inner surface adjacent said gas chamber, a layer of resilient material generally paralleling and overlying said inner surface and defining a disc portion extending over the inner end of said bore, the periphery of said disc portion being bonded to the inner surface of said rigid member through which the inner end of said bore opens, the central portion of said disc portion being movable toward and away from said surface and having passage means therethrough with one end opening toward the rigid member inner surface whereby gas introduced under pressure through said gas port may be charged into the gas chamber, said passage means being positioned laterally remote from said gas port and between the bonded periphery and the axis of said portion, the central portion of said disc portion, in the relaxed position thereof, being retained against said surface of said rigid member and both closing and sealing said gas port by engagement of the disc portion against the inner end of the bore and both closing and sealing said passage means by engagement of said one end of the passage means against the inner surface of the rigid member, said central portion upon movement away from said surface, opening both the gas port and the passage means to provide communication between said gas port and said gas chamber.
Claim 3
Dependent Claim
52 words
The combination set forth in claim 1 in which an actuating member is slidably mounted in said bore and has its inner end protruding therefrom and operatively connected to said central portion to effect movement of the latter away from said surface when said actuating member is moved inwardly in said bore.
Claim 4
Dependent Claim
33 words
The combination set forth in claim 2 in which the protruding end of said actuating member is enlarged and defines a head at least partially embedded in the axis of said central portion.
Claim 5
Dependent Claim
48 words
The combination set forth in claim 2 in which said passage means comprises a plurality of bores extending through the central portion of said layer of resilient material, the ends of said bores adjacent said surface of said rigid member being normally pressed thereagainst to close said bores.
Claim 6
Dependent Claim
57 words
The combination set forth in claim 2 in which a portion of said bore is conformed to define an annular valve seat and a portion of said actuating member is movable against said seat when said gas chamber is charged with gas under pressure to act as a valve to close said bore in said rigid member.
Claim 7
Dependent Claim
82 words
The combination set forth in claim 2 in which the protruding end of said actuating member is enlarged and defines a head at least partially embedded in the axis of said central portion, said passage means being located between said bonded periphery and said actuating head, the inner end of said bore is beveled to define a valve seat, and the portion of said head adjacent said seat is correspondingly beveled and is normally retained against said seat to close said bore.
Claim 8
Dependent Claim
54 words
The combination set forth in claim 2 in which said bore is of reduced diameter between its ends defining an annular valve seat, the outer end of said actuating member is normally spaced from said seat and is movable thereagainst when said gas chamber is charged with gas under pressure to close said bore.
Claim 9
Dependent Claim
41 words
The combination set forth in claim 1 in which said rigid member comprises a cylindrical cover member affixed in the opening in said container, said layer of resilient material comprises a disc of diameter less than that of said cover member.
Claim 10
Dependent Claim
80 words
The combination set forth in claim 1 in whicH said partition comprises an elongated bladder closed at one end, said rigid member comprising a cylindrical externally threaded sleeve extending through the opening in said container, the inner end of said sleeve having a base disc integral therewith and positioned in the central portion of the opposed end of said bladder, the portion of said bladder material in juxtaposition with the inner surface of said base disc defining said disc portion.
Claim 11
Dependent Claim
49 words
The combination set forth in claim 1 in which a valve member extends axially outward from the outer surface of said disc portion adjacent the surface of the rigid member through which the bore extends and is retained against the inner end of said bore to seal the latter.
Claim 12
Dependent Claim
29 words
The combination set forth in claim 10 in which the inner end of said bore is conformed to define a valve seat and the valve member is substantially frusto-conical.
Claim 13
Dependent Claim
28 words
The combination set forth in claim 10 in which said valve member is of resilient material formed integrally with the layer of resilient material defining said disc portion.
Claim 14
Dependent Claim
27 words
The combination set forth in claim 10 in which said valve member is rigid and precludes deformation of the valve member and resilient disc into said bore.
References Cited (Backward Citations)
US2801067A
Cited
US2952278A
Cited
US3251380A
Cited
US3348742A
Cited
US3586068A
Cited
US3726282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |