US4287916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semispherical shape valve device in bladder type accumulators
Assignee: Individual
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Filing: 1979-10-24
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Granted: 1981-09-08
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Expires: 1999-10-24
Abstract
Abstract Valve device of bladder type accumulators consisting of a pressure vessel with a bladder enclosed therein, a valve body is secured in the bottom free end of the bladder and a valve seat is formed in the top inside periphery of a liquid pipe, the opposing faces of said valve body and valve seat are so formed to mate closely to each other that when the bladder expands a part of the bladder will not be caught between the valve body and valve seat, thus it is protected from being damaged.
Inventors
- 👤 Kazuo Sugimura
- 👤 Nobuyuki Sugimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:06
CPC Classifications
F; F15; F15B; F15B1/00; F15B1/02; F15B1/04; F15B1/08; F15B1/10; F15B1/18; F15B1/20; F15B2201/00; F15B2201/20; F15B2201/205; F15B2201/30; F15B2201/315; F15B2201/3152; F15B2201/40; F15B2201/41; F15B2201/411; F15B2201/43; F15B2201/435; F15B2201/60; F15B2201/615
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
111 words
In a bladder type accumulator consisting of a vessel enclosing a bladder to be filled with pressure gas, a liquid pipe connected to the bottom of the vessel to be opposed to the free end of the bladder, the improvement characterized by the top end of the liquid pipe being formed as a valve seat to be opened and closed by the mating thereof by a spherical valve body which is secured to the bottom of the bladder and is larger in diameter than said valve seat to assure closure of said valve seat and to prevent extrusion of the bladder therebetween should said valve body eccentrically engage said valve seat.
Claim 2
Dependent Claim
111 words
In a bladder type accumulator consisting of a vessel enclosing a bladder to be filled with pressure gas, a liquid pipe connected to the bottom of the vessel to be opposed to the free end of the bladder, the improvement characterized by the top end of the liquid pipe being formed as a valve seat to be opened and closed by the mating thereof by a spherical valve body which is secured to the bottom of the bladder and is larger in diameter than said valve seat to assure closure of said valve seat and to prevent extrusion of the bladder therebetween should said valve body eccentrically engage said valve seat.
Claim 3
Dependent Claim
30 words
In a bladder type accumulator as claimed in claim 1 the improvement further characterized in that the valve seat is spherical so as to closely mate with said valve body.
Claim 4
Dependent Claim
52 words
In the bladder type accumulator as claimed in claim 1 the improvement further characterized in that said valve body is comprised of a spherical seating face and a larger diameter, spherical elastic auxiliary valve member to augment the seating of the seating face and interposed between the bladder and said seating face.
Claim 5
Dependent Claim
46 words
In the bladder type accumulator as claimed in claim 1 the improvement further characterized in that a guide member smaller than the diameter of the liquid pipe is protruded from the center of the spherical valve body to guide said valve body towards the valve seat.
Claim 6
Dependent Claim
16 words
In a bladder type accumulator as described in claim 1 wherein said valve seat is frustroconical.
Claim 7
Dependent Claim
30 words
In a bladder type accumulator as described in claim 4 wherein said guide member is conical having a base smaller in diameter than the inner diameter of the liquid pipe.
Claim 8
Dependent Claim
28 words
In a bladder type accumulator as described in claim 4 wherein said guide member is hemispherical of a diameter smaller than the inner diameter of the liquid pipe.
Claim 9
Dependent Claim
100 words
A bladder type accumulator comprising: a pressure vessel; a liquid pipe connected to the bottom of the pressure vessel; a gas filled bladder enclosed in the pressure vessel; a valve seat formed in the top end of the liquid pipe, valve means larger than said valve seat secured to the bottom of the bladder, said valve means comprised of a spherical seating face of a diameter to mate said valve seat upon expansion of said bladder and an auxiliary valve to cooperate with said seating face to mate said valve seat if said valve means eccentrically engages the valve seat.
Claim 10
Dependent Claim
100 words
A bladder type accumulator comprising: a pressure vessel; a liquid pipe connected to the bottom of the pressure vessel; a gas filled bladder enclosed in the pressure vessel; a valve seat formed in the top end of the liquid pipe, valve means larger than said valve seat secured to the bottom of the bladder, said valve means comprised of a spherical seating face of a diameter to mate said valve seat upon expansion of said bladder and an auxiliary valve to cooperate with said seating face to mate said valve seat if said valve means eccentrically engages the valve seat.
Claim 11
Dependent Claim
25 words
In a bladder type accumulator as described in claim 8 wherein said valve seat is spherical so as to be mated by the valve means.
Claim 12
Dependent Claim
25 words
In a bladder type accumulator as described in claim 8 wherein said valve seat is frustroconical so as to be mated by said valve means.
Claim 13
Dependent Claim
44 words
In an accumulator as claimed in claim 8 said seating face comprises a spherical surface formed around the periphery of a tapered guide member which protrudes from the center of said seating face to guide said seating face toward mating with the valve seat.
Claim 14
Dependent Claim
29 words
In a bladder type accumulator as described in claim 11 wherein said guide member is semispherical and of a diameter less than the inner diameter of the liquid pipe.
Claim 15
Dependent Claim
32 words
In the accumulator as claimed in claim 11, said guide member is of conical shape and its base diameter is slightly smaller than that of the inner diameter of the liquid pipe.
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) | 1984-09-07 | 1985-03-09 | 1985-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-07 | 1989-03-09 | 1989-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-07 | 1993-03-09 | 1993-09-08 | $7700.00 | Window Closed / Lapsed |