Plant cover and actuator

Details Plant cover and actuator Plant cover and actuator

1972-05-30

1976-03-02

Ostrager, Allen M.

Power plants

Motor operated by expansion and/or contraction of a unit of...

Mass is a liquid

F03G 706

Patent

active

039409368

ABSTRACT:
A plant cover having a thermally responsive actuator for venting purposes. The actuator includes a hermetically sealed plyable bag containing an amount of vaporizable liquid that when vaporized expands the bag to effect actuator actuation. A method of growing plants using the plant cover of the invention including planting in an earthen trough and covering the trough with a plant cover of the invention.

REFERENCES:
patent: 795761 (1905-07-01), Fulton
patent: 2989281 (1961-06-01), Fritts
patent: 3041821 (1962-07-01), Lindberg, Jr.
patent: 3099222 (1963-07-01), Poliseo
patent: 3690065 (1972-09-01), Bucalo

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