Portable environmental barrier for an open door-way or window

Details Portable environmental barrier for an open door-way or window Portable environmental barrier for an open door-way or window

1986-10-29

1988-04-19

Kannan, Philip C.

Movable or removable closures

Combined

160 88, E06B 700

Patent

active

047380535

ABSTRACT:
An environmental barrier device which fits between an open door of a building and the door jamb in order to enclose the open space therebetween and through which hoses, electrical wires, tubing, piping, etc., may pass. The device allows access to and egress from the building while in use and yet seals the open space against loss of heat or coolant, and also prevents pets, insects, or the like from passing through the open space during the time the door is necessarily open.

REFERENCES:
patent: 538538 (1895-04-01), Schreiner
patent: 827483 (1906-07-01), Voorhees
patent: 1643939 (1927-10-01), Becker
patent: 1745299 (1930-01-01), Holan
patent: 2222753 (1940-11-01), Persson
patent: 2914818 (1959-12-01), Pritzert
patent: 4022263 (1977-05-01), Beckett et al.

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