Patent US1349330A successfully refreshed from Google Patents.
Patent US3813080A successfully refreshed from Google Patents.
US3813080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for controlling a multi-position valve
Assignee: Individual
•
Filing: 1972-10-04
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Granted: 1974-05-28
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Expires: 1992-10-04
Abstract
Abstract A device and method for controlling a multiposition valve to regulate flow from a spray mechanism, which involves positioning a stop means in the path of movement of a valve actuating lever and which stop means provides two predetermined stop positions of the lever which can be selected alternatively or sequentially.
Inventors
- 👤 K Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:40
CPC Classifications
A; A01; A01M; A01M7/00; A01M7/0089; A01G; A01G25/00; A01G25/16; F; F16; F16K; F16K51/00; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20582; Y10T74/2063; Y10T74/20636
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
119 words
In an apparatus for controlling a spray mechanism for use in agricultural aircraft, including a multi-position valve in a conduit between a reservoir of spray material and spray discharge outlet, and a lever mounted for pivotal movement to control the position of said valve, the improvement comprising a device which includes a cam-like member positionable at any preselected point in the path of movement of the lever, said member having a stop face engageable by the lever to arrest movement thereof in one of two predetermined valve open positions, the cam-like member having a flange portion and a projecting shank portion, each of which has a surface engageable by the valve actuating lever at a predetermined valve open position.
Claim 2
Dependent Claim
119 words
In an apparatus for controlling a spray mechanism for use in agricultural aircraft, including a multi-position valve in a conduit between a reservoir of spray material and spray discharge outlet, and a lever mounted for pivotal movement to control the position of said valve, the improvement comprising a device which includes a cam-like member positionable at any preselected point in the path of movement of the lever, said member having a stop face engageable by the lever to arrest movement thereof in one of two predetermined valve open positions, the cam-like member having a flange portion and a projecting shank portion, each of which has a surface engageable by the valve actuating lever at a predetermined valve open position.
Claim 3
Dependent Claim
42 words
A device as defined in claim 1, wherein the lever is mounted on a quadrant member for movement between valve closed and valve open positions, the flange portion of the cam-like member being located in the plane of movement of the lever.
Claim 4
Dependent Claim
47 words
A device according to claim 2, wherein the lever is movable out of its normal plane of pivotal movement to override the stop surface on the flange portion, whereby the lever is movable into contact with the surface of the projecting shank portion of the cam-like member.
Claim 5
Dependent Claim
40 words
A device as defined in claim 3, wherein the flange portion of the cam-like member has cam surfaces formed at its outer edge, each of which is a different distance from the central axis of the projecting shank portion thereof.
Claim 6
Dependent Claim
44 words
A device according to claim 2, wherein the lever is pivotally attached to the quadrant member at a point near the apex of said member, and the plane of pivotal movement of the lever is substantially parallel with the surface of the quadrant member.
References Cited (Backward Citations)
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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) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |