Patent US3748062A successfully refreshed from Google Patents.
US3748062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self energizing valve means for fluid translating device
Assignee: Case LLC
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Filing: 1971-07-21
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Granted: 1973-07-24
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Expires: 1991-07-21
Abstract
Abstract A self energizing valve for use in controlling the flow of fluid to a fluid translating device having inner and outer members cooperating to define an annular space and being relatively rotatable by flowing fluid through a plurality of passageways communicating with the annular space. The self energizing valve slides in a valve bore and is automatically maintained in a first position by the pressure of fluid flowing through a fluid passage in the valve communicating with the passageways. The valve and bore cooperate to define a cavity and the fluid passage is connectable to the cavity and the pressure of the fluid in the cavity will move the valve from the first position.
Inventors
- 👤 J Wilcox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:08
CPC Classifications
F; F03; F03C; F03C2/00; F03C2/30; F03C2/304
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
193 words
In a fluid translating device having inner and outer members cooperating to define an annular space and being relatively rotatable; means defining a plurality of passageways communicating with said annular space; and means for directing fluid through said passageways to produce relative rotation of said members comprising: means defining a bore communicating with said passageways, said bore having first and second ports communicating therewith at a location spaced from passageways; valve means slidable in said bore and cooperating with said bore to produce a fluid passage defining first and second flow paths between respective ports and said passageways; and moving means for moving said valve means, said moving means including first means defining surfaces on said valve means exposed to the fluid pressure in said fluid passage to maintain said valve means in a first position in response to the pressure of fluid in said flow paths; and flow control means cooperating with said flow paths to selectively place said flow paths in communication with one end of said valve means to overcome said first means to move said valve means to a second position with the fluid flowing in the fluid passage.
Claim 2
Dependent Claim
193 words
In a fluid translating device having inner and outer members cooperating to define an annular space and being relatively rotatable; means defining a plurality of passageways communicating with said annular space; and means for directing fluid through said passageways to produce relative rotation of said members comprising: means defining a bore communicating with said passageways, said bore having first and second ports communicating therewith at a location spaced from passageways; valve means slidable in said bore and cooperating with said bore to produce a fluid passage defining first and second flow paths between respective ports and said passageways; and moving means for moving said valve means, said moving means including first means defining surfaces on said valve means exposed to the fluid pressure in said fluid passage to maintain said valve means in a first position in response to the pressure of fluid in said flow paths; and flow control means cooperating with said flow paths to selectively place said flow paths in communication with one end of said valve means to overcome said first means to move said valve means to a second position with the fluid flowing in the fluid passage.
Claim 3
Dependent Claim
116 words
A fluid translating device as defined in claim 1, in which said valve means includes a first surface exposed to the pressure of fluid in one of said flow paths, a second surface exposed to the pressure of fluid in the other of said flow paths and a third surface on said end of said valve means, said first and second surfaces being arranged to define said first means to move said valve means to said first position when the fluid in either of said paths is pressurized, said third surface being opposed to said first and second surfaces to move said valve means to said second position when said flow paths are in communication therewith.
Claim 4
Dependent Claim
78 words
A fluid translating device as defined in claim 1, in which said valve means includes a sleeve closed at one end and having its opposite end in communication with one of said ports, said sleeve having a peripheral flange engaging said bore with an annular surface of said flange exposed to the fluid in the other of said paths, the opposite surface of said closed end being adapted to be exposed to the fluid in said flow paths.
Claim 5
Dependent Claim
50 words
A fluid translating device as defined in claim 1, in which said valve means and said bore cooperate to define a cavity with said control flow means including a conduit communicating with said cavity and a control valve actuatable to supply pressurized fluid from said flow paths to said cavity.
Claim 6
Dependent Claim
90 words
A fluid translating device as defined in claim 4, further including second and third conduits connecting said flow paths to said control valve and unidirectional valves cooperating with said second and third condUits accommodating flow from said flow paths to said control valve and preventing flow from said control valve to said second and third conduits; said control valve having a first position blocking flow between said conduits and exhausting the fluid from said first conduit and a second position connecting said second and third conduits to said first conduit.
Claim 7
Dependent Claim
75 words
A fluid translating device as defined in claim 4, in which said valve means includes a sleeve having a closed end cooperating with said bore to define said cavity, and an open end communicating with said first port, said sleeve having a peripheral flange having a surface in communication with said second port, said flange being on opposite sides of at least one of said passageways when said valve means is in the respective positions.
Claim 8
Dependent Claim
76 words
A fluid translating device as defined in claim 4, in which said valve means has a first surface exposed to the fluid in one of said paths and a second surface exposed to the fluid in the other of said paths with the areas of said surface being substantially equal to each other, and in which said valve means has a third surface having an area substantially greater than either of said first and second surfaces.
Claim 9
Dependent Claim
44 words
A fluid translating device as defined in claim 7, further including biasing means in said cavity and acting on said sleeve for moving said sleeve to said second position when the pressure of fluid in said flow paths and said cavity is substantially balanced.
Claim 10
Dependent Claim
29 words
A fluid translating device as defined in claim 7, in which said third surface area is substantially equal to the combined area of said first and second surface areas.
Claim 11
Dependent Claim
130 words
In a fluid translating device including inner and outer members cooperating to define a working chamber having a plurality of passageways in communication therewith with the flow of fluid through said chamber causing relative rotation between said members; means defining a fluid passage through a first group of said passageways, said chamber and a second group of passageways, said means including valve means automatically maintained in a first position by the pressure of the fluid flowing through said fluid passage and having a surface cooperating with one of said members to define a cavity; and flow control means for selectively placing said fluid passage in communication with said cavity to move said valve means to a second position and change the number of passageways in said first and second groups.
Claim 12
Dependent Claim
130 words
In a fluid translating device including inner and outer members cooperating to define a working chamber having a plurality of passageways in communication therewith with the flow of fluid through said chamber causing relative rotation between said members; means defining a fluid passage through a first group of said passageways, said chamber and a second group of passageways, said means including valve means automatically maintained in a first position by the pressure of the fluid flowing through said fluid passage and having a surface cooperating with one of said members to define a cavity; and flow control means for selectively placing said fluid passage in communication with said cavity to move said valve means to a second position and change the number of passageways in said first and second groups.
Claim 13
Dependent Claim
62 words
A fluid translating device as defined in claim 10, in which said flow control means includes a control valve having first conduit means connecting said valve to said cavity and second conduit means connecting said valve to said fluid passage, said valve having a first position blocking flow between said conduit means and a second position accommodating flow between said conduit means.
Claim 14
Dependent Claim
43 words
A fluid translating device as defined in claim 11, in which said flow control means further includes a conduit connecting said valve to a reservoir with said first conduit means in communication with said conduit when said valve is in the first position.
Claim 15
Dependent Claim
86 words
A fluid translating device as defined in claim 10, in which said valve means divides said fluid passage into first and second flow paths and has respective surfaces exposed to the pressure of fluid in the respective flow paths and in which said surface of said valve means in said cavity has an area substantially equal to the combined area of the surfaces exposed to said flow paths and the areas of the surfaces exposed to the respective flow paths are approximately equal to each other.
Claim 16
Dependent Claim
52 words
A fluid translating device as defined in claim 13, further including a spring in said cavity and acting on said surface in said cavity to move said valve means to said second position when said flow control means places said fluid passage in communication with said cavity and no pressure difference exists.
Claim 17
Dependent Claim
81 words
A fluid translating device as defined in claim 13, in which said flow control means incluDes a control valve; a first conduit connecting said valve to said cavity; second and third conduits connecting said flow paths to said valve and each having a check valve preventing flow from the control valve to the flow paths, said control valve having a first position blocking flow from the second and third conduits to the first conduit and a second position accommodating such flow.
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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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |