Ventilated plant protector

Details Ventilated plant protector Ventilated plant protector

1974-02-13

1976-03-30

Burr, Edgar S.

Plant husbandry

Cover, shade, or screen

Adjustable on supporting structure or having means allowing...

47 19, 236 49, 236101R, A01G 1304, F24F 700, G05D 2302

Patent

active

039465217

ABSTRACT:
A plant protector having an elongated housing side wall opening over which is movably mounted a closure panel, the panel being pivoted on the housing at one end of the opening and being connected at the other end of the opening to a heat sensitive expansible coil mounted within the housing so that a change in air temperature within the housing effects opening movement of the panel.

REFERENCES:
patent: 585009 (1897-06-01), Taylor et al.
patent: 817106 (1906-04-01), Farmer
patent: 1290714 (1919-01-01), Causey
patent: 2107809 (1938-02-01), Warner
patent: 2187767 (1940-01-01), Akers
patent: 2709838 (1955-06-01), Zausner
patent: 2975975 (1961-03-01), Weber
patent: 3129530 (1964-04-01), Anderson
patent: 3195441 (1965-07-01), Hedrick
patent: 3528606 (1970-09-01), Witten
patent: 3698131 (1972-10-01), Kesinger

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