Insulated closure structure

Details Insulated closure structure Insulated closure structure

1991-12-03

1992-11-10

Kannan, Philip C.

Movable or removable closures

Movable closure and its support transferable as unit

49470, 49478, 49505, E06B 110

Patent

active

051613298

ABSTRACT:
A closure structure for a walk-in freezer or refrigerator unit capable of being mounted into a rectangular opening, the structure comprising a U-shaped inner frame member and a U-shaped outer frame member which are connected at a mating lip and mating flange to form a C-shaped channel to receive the wall around the rectangular opening, a threshold member mounted flush with the floor and a hingedly mounted door member. The inner frame member has an insulating material mounted to correspond to the rectangular opening. Sealing may be enhanced by provision of a magnetic door gasket and metal strip. A double wiper strip on the bottom of the door is positioned to contain a heated strip mounted in the threshold.

REFERENCES:
patent: 3673735 (1972-07-01), Winsler et al.
patent: 3757473 (1973-09-01), Mundy
patent: 4006562 (1977-02-01), Belanger et al.
patent: 4180944 (1980-01-01), Stowik et al.
patent: 4831780 (1989-05-01), Bockwinkel
patent: 4941289 (1990-07-01), Rolek

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