US3801062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manual valve override
Assignee: CONTROMATICS CORP
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Filing: 1973-05-25
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Granted: 1974-04-02
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Expires: 1993-05-25
Abstract
Abstract Valves for controlling fluid flow known to the prior art have included various means for selective remote control in the event of failure of the primary power drive for the valve and in general these devices have utilized a separate control to engage and disengage a manual control while at the same time disconnecting a power control. The invention provides a cam member fixed to a drive shaft for manual control of the valve. The cam member has a surface disposed obliquely with respect to the axis of the drive shaft and angular indexing of the drive shaft without other movement provides for urging the drive shaft either into or out of engagement with another drive member.
Inventors
- 👤 F Arn
- 👤 W Dowicki
- 👤 H Pierce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:03
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/16; F16K31/163; F16K31/1635; F16K31/14; F16K31/143
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
146 words
In a valve having a housing having a flow passage therethrough and a flow restricting member mounted on a pivotally mounted axle for selective movement between flow obstructing and flow passing positions, the improvement which includes: a. a drive shaft carried by the housing for rotation and axial movement and having means for engaging and driving the axle at a first end of said drive shaft; b. means for rotating said drive shaft at a second end of said drive shaft; and c. means for selectively engaging and disengaging said drive shaft from driving engagement with said axle comprising means for axially displacing said drive shaft from a first position where said drive shaft engAges said axle to a second position where said drive shaft is disengaged from said axle, said means for axially displacing said drive shaft being responsive to rotation of said drive shaft.
Claim 2
Dependent Claim
146 words
In a valve having a housing having a flow passage therethrough and a flow restricting member mounted on a pivotally mounted axle for selective movement between flow obstructing and flow passing positions, the improvement which includes: a. a drive shaft carried by the housing for rotation and axial movement and having means for engaging and driving the axle at a first end of said drive shaft; b. means for rotating said drive shaft at a second end of said drive shaft; and c. means for selectively engaging and disengaging said drive shaft from driving engagement with said axle comprising means for axially displacing said drive shaft from a first position where said drive shaft engAges said axle to a second position where said drive shaft is disengaged from said axle, said means for axially displacing said drive shaft being responsive to rotation of said drive shaft.
Claim 3
Dependent Claim
92 words
The valve as described in claim 1 wherein said means for axially displacing said drive shaft comprises a cam member carried on said drive shaft in generally transverse relationship, said member having a generally planar surface thereof within a plane at an oblique angle with respect to the axis of said drive shaft, said generally planar surface having a first point and a second point in axially and radially spaced relationship, said first point being further from said first end of said shaft than said second point measured in an axial direction.
Claim 4
Dependent Claim
101 words
A valve as described in claim 2 wherein said means for axially displacing said drive shaft further includes standoff means supported by the valve housing and being selectively alignable with and between said first point on said planar surface of said cam member and said valve housing and also selectively alignable with and between said second point on said planar surface of said cam member and said valve housing, said standoff means when positioned against said first point urging said drive shaft into said first position wherein said first end of said drive shaft is in driving engagement with said axle.
Claim 5
Dependent Claim
89 words
The valve as described in claim 3 wherein said standoff means comprises a disc rotatably carried on said drive shaft, said disc having one face thereof abutting said valve housing and the opposite face thereof having an upstanding portion engaging said planar face of said cam member, and further including means for biasing said drive shaft axially toward said upstanding portion engaging said planar face of said cam member to provide positive engagement between said planar surface and said upstanding portion engaging said planar face of said cam member.
Claim 6
Dependent Claim
31 words
A valve as described in claim 4 wherein said upstanding portion engaging said planar face of said cam member includes a ball rotatably carried for rolling engagement with said planar surface.
Claim 7
Dependent Claim
103 words
The valve as described in claim 5 wherein detent means are provided to restrain the rotational movement of said disc about said drive shaft, said detent means comprising a plurality of depressions disposed at angular intervals about the circumference of said disc and a spring loaded ball carried by said housing selectively alignable with each of said depressions and said ball being biased toward one of said depressions, said cam member being provided with an upstanding stop on said planar surface positioned for engagement with said upstanding portion engaging said planar face of said cam member upon angular indexing of said drive shaft.
Claim 8
Dependent Claim
84 words
The valve as described in claim 6 further including a double acting piston and cylinder means, said cylinder having first and second fluid connection ports in fluid communication with opposite sides of said piston, said valve also including a pressure equalization valve connected to said first and second fluid connection ports, means for opening said pressure equalization valve when said drive shaft is in said first position whereby pressure is equalized across said piston and no net forces are imposed on said axle thereby.
References Cited (Backward Citations)
US3007487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |