Patent US3850082A successfully refreshed from Google Patents.
US3850082A
Expired / Lapsed
US
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Fluid flow control elements
Assignee: ADEOLA AG
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Filing: 1972-11-28
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Granted: 1974-11-26
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Expires: 1992-11-28
Abstract
Abstract A fluid flow control element for use in apparatus for reciprocating a working piston in a pneumatic drive system includes a plurality of orifices interconnected within the element by passages through which flow is controlled by means of two cap-shaped seals. The seals are arranged in the spaces defined by two pairs of opposed generally conical surfaces. The apparatus includes a directional control valve 3/2 arranged to connect one of the orifices either to a source of pneumatic pressure or to atmosphere and a pressure reservoir connected to another orifice. Two further orifices are connected to opposite ends of a cylinder in which the working piston moves. The arrangement provides for control of the working piston by means of the directional control valve 3/2.
Inventors
- 👤 T Nussbaumer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:37
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/04; F15; F15B; F15B13/00; F15B13/02; F15B13/04; F15B13/0401; F15B13/0405; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/8593; Y10T137/87169; Y10T137/87193
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
282 words
A fluid flow control element including a body, first and second pairs of opposed generally conical surfaces formed within said body, a first space defined between said first pair of opposed surfaces and a second space defined between said second pair of opposed surfaces, a passage terminating in the central region of each of said surfaces, a cap-shaped seal received in said first space and a further cap-shaped seal received in said second space, each of said seals being displaceable by fluid pressure and adapted to seal either of said passages terminating in the surfaces defining the respective space, said body including a first outlet leading to the passage terminating in one surface of said first pair of opposed surfaces, a second outlet connected to the passage terminating in the other of said first pair of opposed surfaces, a third outlet connected to said first space, said first space being also connected to the passage terminating in one surface of said second pair of opposed surfaces, a fourth outlet connected to said second space, a fifth outlet connected to the passage terminating in the other surface of said second pair of opposed surfaces, a sixth outlet, and a further passage connected to said sixth outlet, said further passage being connected to said other passage connected to the fifth outlet, and a valve seat in said further passage and a valve element adapted to seat on said valve seat and block said further passage, and a rod connecting said valve element to said cap-shaped seal in said second space, so that the position of said valve element in said further passage depends on the position of said cap-shaped seal in said second space.
Claim 2
Dependent Claim
282 words
A fluid flow control element including a body, first and second pairs of opposed generally conical surfaces formed within said body, a first space defined between said first pair of opposed surfaces and a second space defined between said second pair of opposed surfaces, a passage terminating in the central region of each of said surfaces, a cap-shaped seal received in said first space and a further cap-shaped seal received in said second space, each of said seals being displaceable by fluid pressure and adapted to seal either of said passages terminating in the surfaces defining the respective space, said body including a first outlet leading to the passage terminating in one surface of said first pair of opposed surfaces, a second outlet connected to the passage terminating in the other of said first pair of opposed surfaces, a third outlet connected to said first space, said first space being also connected to the passage terminating in one surface of said second pair of opposed surfaces, a fourth outlet connected to said second space, a fifth outlet connected to the passage terminating in the other surface of said second pair of opposed surfaces, a sixth outlet, and a further passage connected to said sixth outlet, said further passage being connected to said other passage connected to the fifth outlet, and a valve seat in said further passage and a valve element adapted to seat on said valve seat and block said further passage, and a rod connecting said valve element to said cap-shaped seal in said second space, so that the position of said valve element in said further passage depends on the position of said cap-shaped seal in said second space.
Claim 3
Dependent Claim
52 words
A fluid flow control element according to claim 1 wherein said body is constituted by a hollow main body, and at least two hollow members tightly inserted in said main body, at least one pair of opposed surfaces being formed by one surface on one member and one surface on another member.
Claim 4
Dependent Claim
36 words
A fluid flow control element according to claim 1 wherein said body is constituted by a hollow main body, at least one of said generally conical surfaces being formed integrally as part of said main body.
Claim 5
Dependent Claim
66 words
A fluid flow control element according to claim 1, wherein each of said cap-shaped seals extends beyond the periphery of the adjacent inner opposed conical surface, one seal being arranged to be moved by excess pressure applied to the first space through the third outlet and the other seal being arranged to be moved by excess pressure applied to the second space through the fourth outlet.
Claim 6
Dependent Claim
75 words
Apparatus for reciprocating a piston in a fluid drive system, including a fluid flow control element according to claim 1, a control valve 3/2 having an in-out orifice, said orifice being connected for fluid flow to or from said first outlet of the control element, a pressure reservoir, a fluid line connecting said pressure reservoir to said fourth outlet, and a piston-and-cylinder, said third and fifth outlets being connected to opposite ends of said cylinder.
Claim 7
Dependent Claim
54 words
Apparatus according to claim 5 wherein said body of said fluid flow control element is constituted by a hollow main body, and at least two hollow members tightly inserted in saiD main body, at least one pair of opposed surfaces being formed by one surface on one member and one surface on another member.
Claim 8
Dependent Claim
38 words
Apparatus according to claim 5 wherein said body of said fluid flow control element is constituted by a hollow main body, at least one of said generally conical surfaces being formed integrally as part of said main body.
Claim 9
Dependent Claim
71 words
Apparatus according to claim 5, wherein each of said cap-shaped seals of said fluid control element extends beyond the periphery of the adjacent inner opposed conical surface, one of said seals being arranged to be moved by excess pressure applied to the first space through the third outlet and the other of said seals being arranged to be moved by excess pressure applied to the second space through the fourt outlet.
Claim 10
Dependent Claim
23 words
Apparatus according to claim 5 wherein said second and sixth outlets of the fluid flow control element are fitted with noise reducing filters.
Claim 11
Dependent Claim
10 words
Apparatus according to claim 5 wherein said fluid is air.
References Cited (Backward Citations)
US3076477A
Cited
US3093153A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |