CONDITIONED VESTIBULE FOR A COLD STORAGE DOORWAY

Title:

CONDITIONED VESTIBULE FOR A COLD STORAGE DOORWAY

Document Type and Number:

WIPO Patent Application WO2004079281

Kind Code:

A3

Abstract:

A conditioned vestibule for a cold storage doorway is disclosed. The vestibule includes a frame that supports inner and outer moveable door-forming members. The vestibule also includes a heater that circulates air between the inner and outer door-forming members and a variable-speed fan that varies flow of the air between the inner and outer door-forming members. In one embodiment, the airflow from the fan increases upon the opening of the door-forming members and decreases upon the closing of the door-forming members.

Inventors:

SMITH PETER R (US)
ASHLEY PAUL (GB)
JOHNSTONE COLIN DOUGLAS (GB)

Application Number:

PCT/US2004/000753

Publication Date:

March 10, 2005

Filing Date:

January 13, 2004

Export Citation:

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Assignee:

HCR INC (US)
CLARK DOOR LTD (GB)
SMITH PETER R (US)
ASHLEY PAUL (GB)
JOHNSTONE COLIN DOUGLAS (GB)

International Classes:

F24F9/00; F25D23/02; (IPC1-7): F24F9/00

Foreign References:

US2939374A	1960-06-07
US4516482A	1985-05-14
US3190207A	1965-06-22

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