Expansible chamber devices – With linkage or transmission having relatively movable members
Patent
1973-11-23
1976-02-17
Maslousky, Paul E.
Expansible chamber devices
With linkage or transmission having relatively movable members
91336, 91448, 92132, 74142, 741255, F01B 900, F01B 3100, F01B 2506
Patent
active
039384268
ABSTRACT:
An automatic irrigation controller apparatus having a cam follower operated bank of pilot valves for operating selected pilot operated water valves throughout a watering or irrigation system is provided with a water powered means for receiving water under pressure from a source thereof and a member driven in a predetermined manner by the force of such water for driving a cam means to operate said cam followers via power transmission means between the water driven member and a cam shaft mounting said cam. A water piston is mounted in a cylinder with associated water valve means for selectively connecting the cylinder to a source of water under pressure and to a vent to provide a reciprocal movement for the piston, a return stroke for the piston being accomplished through the provision of a spring. A reciprocal piston movement is translated through a power transmission means including a drive ratchet wheel connected to the piston and a driven ratchet wheel connected to the cam shaft. An escapement mechanism is provided with a ring gear mounted about an engagement with a plurality of planetary gears mounted by a carrier about a sun gear driven by an input shaft of the apparatus connected to the cam shaft. Differences in the speed of rotation of the input shaft and the escapement means ring gear cause movement of the carrier which is connected to a valve restricting means for restricting the flow of water to the cylinder to regulate the speed of the water motor and rotation of the apparatus input shaft to that determined by the escapement mechanism.
REFERENCES:
patent: 2096458 (1937-10-01), Johnson
patent: 2488766 (1949-11-01), Moss
patent: 2563584 (1951-08-01), Crookston
patent: 2613750 (1952-10-01), Breguet et al.
patent: 3345915 (1967-10-01), Dotto
patent: 3428085 (1969-02-01), Haberstump
patent: 3481231 (1969-12-01), Cormier
patent: 3503304 (1970-03-01), Comeau, Jr. et al.
Maslousky Paul E.
The Toro Company
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