Door closure system

Details Door closure system Door closure system

2005-08-08

2009-10-06

Johnson, Blair M. (Department: 3634)

Flexible or portable closure, partition, or panel

With filler and filler type

For roll type

C160S044000, C454S188000

Reexamination Certificate

active

07597129

ABSTRACT:
A door structure, said structure for use particularly, although not necessarily exclusively, to selectively close an opening between a first environment which is at a temperature which is lower than the temperature of the environment on the opposing side of the opening. The door is provided with a structure so as to define a cavity therein into which air is caused to flow. The door has formations and a structure so as to encourage uniform air flow through the cavity and hence prevent or minimise the creation of condensation and/or frost on the door structure.

REFERENCES:
patent: 1806859 (1931-05-01), Mattei
patent: 3231006 (1966-01-01), Fisher et al.
patent: 3347145 (1967-10-01), Steelman
patent: 3753317 (1973-08-01), Turpin et al.
patent: 3886851 (1975-06-01), Berner
patent: 4151871 (1979-05-01), Ryan
patent: 4275645 (1981-06-01), Ruff
patent: 2 385 659 (2003-08-01), None

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