Patent US3714969A successfully refreshed from Google Patents.
US3714969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sequential valve for rotary vane air motors
Assignee: Aro Corp
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Filing: 1970-12-30
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Granted: 1973-02-06
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Expires: 1990-12-30
Abstract
Abstract An improved valve assembly has one inlet and two outlets. The valve is operable to sequentially provide a fluid flow path first between the inlet and one outlet and next between the inlet and both outlets. Utilization of the valve assembly for a rotary vane type air motor driven hoist is described as a preferred embodiment.
Inventors
- 👤 J Hanning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:36
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/18; F16; F16K; F16K11/00; F16K11/10; F16K11/14; F16K11/16; F16K11/163; F16K11/166; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86928; Y10T137/86936; Y10T137/86944; Y10T137/86984; Y10T137/87169
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
165 words
An improved valve assembly for sequentially providing a supply of pressurized fluid from a fluid inlet to first and second fluid outlets, comprising, in combination: a valve housing having inlet, first and second outlets and an exhaust opening; a movable Valve member within said housing, said movable valve member including means for sealing said inlet and also including means for sealing one of said outlets from the other of said outlets; means for moving said movable valve member in a first direction to a first position to open said inlet to said housing to provide a fluid flow path from said inlet to one of said outlets; further means for moving said movable valve member in said first direction to a second position to provide a fluid flow path from said inlet to both of said outlets and thereby unseal said means for sealing one of said outlets from the other outlet; and second means for sealing said exhaust opening whenever said inlet is opened.
Claim 2
Dependent Claim
165 words
An improved valve assembly for sequentially providing a supply of pressurized fluid from a fluid inlet to first and second fluid outlets, comprising, in combination: a valve housing having inlet, first and second outlets and an exhaust opening; a movable Valve member within said housing, said movable valve member including means for sealing said inlet and also including means for sealing one of said outlets from the other of said outlets; means for moving said movable valve member in a first direction to a first position to open said inlet to said housing to provide a fluid flow path from said inlet to one of said outlets; further means for moving said movable valve member in said first direction to a second position to provide a fluid flow path from said inlet to both of said outlets and thereby unseal said means for sealing one of said outlets from the other outlet; and second means for sealing said exhaust opening whenever said inlet is opened.
Claim 3
Dependent Claim
165 words
An improved valve assembly for sequentially providing a supply of pressurized fluid from a fluid inlet to first and second fluid outlets, comprising, in combination: a valve housing having inlet, first and second outlets and an exhaust opening; a movable Valve member within said housing, said movable valve member including means for sealing said inlet and also including means for sealing one of said outlets from the other of said outlets; means for moving said movable valve member in a first direction to a first position to open said inlet to said housing to provide a fluid flow path from said inlet to one of said outlets; further means for moving said movable valve member in said first direction to a second position to provide a fluid flow path from said inlet to both of said outlets and thereby unseal said means for sealing one of said outlets from the other outlet; and second means for sealing said exhaust opening whenever said inlet is opened.
Claim 4
Dependent Claim
165 words
An improved valve assembly for sequentially providing a supply of pressurized fluid from a fluid inlet to first and second fluid outlets, comprising, in combination: a valve housing having inlet, first and second outlets and an exhaust opening; a movable Valve member within said housing, said movable valve member including means for sealing said inlet and also including means for sealing one of said outlets from the other of said outlets; means for moving said movable valve member in a first direction to a first position to open said inlet to said housing to provide a fluid flow path from said inlet to one of said outlets; further means for moving said movable valve member in said first direction to a second position to provide a fluid flow path from said inlet to both of said outlets and thereby unseal said means for sealing one of said outlets from the other outlet; and second means for sealing said exhaust opening whenever said inlet is opened.
Claim 5
Dependent Claim
37 words
The improved valve assembly of claim 1 wherein said valve member is movable within said housing along an axis of translation and wherein said inlets and outlets are spaced from one another along said axis of translation.
Claim 6
Dependent Claim
46 words
The improved valve assembly of claim 1 wherein said valve member includes a land in sealing engagement with said housing and interposed between said outlets, said valve member being movable to said second position to provide said path from said inlet to both of said outlets.
Claim 7
Dependent Claim
35 words
The improved valve assembly of claim 1 wherein said means for sealing said exhaust opening is movable in said valve housing to connect said second outlet with said exhaust opening when said inlet is sealed.
Claim 8
Dependent Claim
39 words
The improved valve assembly of claim 1 wherein said valve member is movable along an axis of translation and including a secoNd valve member translatable within said housing along the same axis of translation and in the opposite sense.
Claim 9
Dependent Claim
49 words
The improved valve assembly of claim 1 including a second separate valve member in said valve housing cooperative with a second inlet and another separate outlet in said housing, and means for moving one or the other of said valve members out of sealing engagement with its associated inlet.
Claim 10
Dependent Claim
85 words
The improved valve assembly of claim 1 including a second separate valve member in said valve housing cooperative with a second inlet and another separate outlet, two separate exhaust openings in said housing connectable respectively with an outlet of each valve member, and means for moving one or the other of said valve members out of sealing engagement with its associated inlet, said means for sealing movable to seal the exhaust opening associated with the valve member that is positioned to open its associated inlet.
Claim 11
Dependent Claim
45 words
The improved valve assembly of claim 7 wherein said means for moving said valve members and said means for sealing said exhaust openings comprise a plunger in said housing, intermediate said valve members and reciprocal to engage one or the other of said valve members.
Claim 12
Dependent Claim
51 words
The improved valve assembly of claim 1 wherein said means for sealing comprise a plunger slidable within said bore and having a radius substantially equal to the internal radius of said bore, said plunger also including a portion extending from one end thereof for guiding and engaging with said valve member.
Claim 13
Dependent Claim
52 words
The improved valve member of claim 1 wherein said valve member includes a surface area on the one side of said inlet which is greater than the surface area on the other side of said inlet so as to bias the valve member into a closed position by means of fluid pressure.
Claim 14
Dependent Claim
142 words
An improved valve assembly for sequentially providing a supply of pressurized fluid from a fluid inlet to first and second fluid outlets comprising, in combination: a valve housing having an inner fluid chamber, an inlet to said chamber, first and second outlets from said chamber and an exhaust opening from said chamber; a valve member translatable within said chamber, said valve member including an inlet seal and a second seal for sealing fluid flow between said outlets; means for translating said valve member to open said inlet and provide a fluid flow path to said first outlet, said second seal maintaining sealing between said outlets; means for further translating said valve member to open a fluid flow path between both of said outlets and said inlet; and plunger means within said housing for sealing said exhaust opening whenever said inlet is opened.
Claim 15
Dependent Claim
142 words
An improved valve assembly for sequentially providing a supply of pressurized fluid from a fluid inlet to first and second fluid outlets comprising, in combination: a valve housing having an inner fluid chamber, an inlet to said chamber, first and second outlets from said chamber and an exhaust opening from said chamber; a valve member translatable within said chamber, said valve member including an inlet seal and a second seal for sealing fluid flow between said outlets; means for translating said valve member to open said inlet and provide a fluid flow path to said first outlet, said second seal maintaining sealing between said outlets; means for further translating said valve member to open a fluid flow path between both of said outlets and said inlet; and plunger means within said housing for sealing said exhaust opening whenever said inlet is opened.
Claim 16
Dependent Claim
61 words
The valve assembly of claim 11 wherein said valve housing is substantially cylindrical and wherein said first valve member comprises a spool within said housing and translatable along the longitudinal axis of said housing, said inlet comprising an open end of said housing, and wherein said first and second outlets comprise adjacent, spaced openings along the longitudinal axis of said housing.
Claim 17
Dependent Claim
42 words
The valve assembly of claim 12 wherein said spool includes an end seal for said inlet of said housing and wherein said spool also includes a landed surface bearing against the interior of said housing and providing a seal between said outlets.
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) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |