US3610568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve actuator including cam linkage
Assignee: Delaware Capital Formation Inc
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Filing: 1969-07-18
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Granted: 1971-10-05
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Expires: 1989-07-18
Abstract
Abstract This invention relates to a mechanism for the controlled rotation of a shaft. More particularly, the invention relates to a valve, including means for the controlled opening and closing thereof, including a valve body having a stem opening therein, a stem rotatably received in the stem opening, an arm affixed to the stem and extending radially therefrom, cam plate movably supported relative to the valve body and movable in a plane parallel the arm, the cam plate having an edge defining a cam surface, an upstanding boss portion affixed to the arm and engaging the cam surface, and means of controllably displacing the cam plate relative to the valve body.
Inventors
- 👤 William D Duwe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:32
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/16; F16K31/163; F16K31/1635
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
220 words
A valve including means for the controlled opening and closing thereof comprising: a valve body having a fluid passageway therethrough and a stem boss portion having a stem opening therein perpendicular said fluid passageway; a closure member supported in said fluid passageway and rotatable in one direction to close said passageway and in the opposite direction to open said passageway; a stem rotatably received in said stem opening, said stem being affixed to said closure member for the rotation thereof, a portion of said stem extending externally of said valve body; an arm affixed to said stem and extending radially therefrom; a cam plate movably supported relative to said valve body and movable in a plane parallel said arm, said cam plate having an edge defining a cam surface and having a parallel sided guide slot therein spaced from said cam surface; an upstanding boss portion affixed to said arm and engaging said cam surface; a pair of upstanding spaced apart guide posts affixed to said valve body and slidably received in said guide slot in said cam plate whereby said cam plate is linearly movable relative to said valve body; and means of controllably displacing said cam plate relative to said valve body, said cam edge engaging said boss portion and rotating said arm and thereby said valve stem.
Claim 2
Dependent Claim
220 words
A valve including means for the controlled opening and closing thereof comprising: a valve body having a fluid passageway therethrough and a stem boss portion having a stem opening therein perpendicular said fluid passageway; a closure member supported in said fluid passageway and rotatable in one direction to close said passageway and in the opposite direction to open said passageway; a stem rotatably received in said stem opening, said stem being affixed to said closure member for the rotation thereof, a portion of said stem extending externally of said valve body; an arm affixed to said stem and extending radially therefrom; a cam plate movably supported relative to said valve body and movable in a plane parallel said arm, said cam plate having an edge defining a cam surface and having a parallel sided guide slot therein spaced from said cam surface; an upstanding boss portion affixed to said arm and engaging said cam surface; a pair of upstanding spaced apart guide posts affixed to said valve body and slidably received in said guide slot in said cam plate whereby said cam plate is linearly movable relative to said valve body; and means of controllably displacing said cam plate relative to said valve body, said cam edge engaging said boss portion and rotating said arm and thereby said valve stem.
Claim 3
Dependent Claim
42 words
A valve including means for the controlled opening and closing thereof according to claim 1 wherein said cam plate has a cam slot therein receiving said boss portion upstanding from said arm, the edges of said cam slot forming said cam surface.
Claim 4
Dependent Claim
76 words
A valve including means for the controlled opening and closing thereof according to claim 1 including: a baseplate affixed to said valve body in a plane perpendicular said valve stem and having an opening therein rotatably receiving said valve stem, said guide posts being affixed to the baseplate, said arm extending parallel to and spaced from said baseplate, said cam plate being movably supported relative to and in a plane parallel and spaced from said baseplate.
Claim 5
Dependent Claim
57 words
A valve including means for the controlled opening and closing thereof according to claim 3 wherein said means of controllably displacing said cam plate includes: a hydraulic cylinder having a piston rod reciprocably extending therefrom, said hydraulic cylinder being affixed to said baseplate and the outer end of said piston rod being affixed to said cam plate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |