Ventilation – Having protecting air current
Reexamination Certificate
2005-11-01
2005-11-01
Joyce, Harold (Department: 3749)
Ventilation
Having protecting air current
C062S256000, C062S408000, C454S192000, C454S195000
Reexamination Certificate
active
06960129
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.
REFERENCES:
patent: 2939374 (1960-06-01), Caille
patent: 3089403 (1963-05-01), Banko
patent: 3190207 (1965-06-01), Weisz
patent: 3218952 (1965-11-01), Gygax
patent: 3270655 (1966-09-01), Guirl et al.
patent: 3608468 (1971-09-01), McClurkin
patent: 3960196 (1976-06-01), Berner
patent: 4045997 (1977-09-01), Showalter et al.
patent: D264751 (1982-06-01), Smith
patent: 4516482 (1985-05-01), Smith
patent: 4946718 (1990-08-01), Napadow
patent: 4979432 (1990-12-01), Catan
patent: 5784895 (1998-07-01), Choi
patent: 5791152 (1998-08-01), Choi
patent: 5809799 (1998-09-01), Jeon
patent: 5870898 (1999-02-01), Choi
patent: 5896752 (1999-04-01), Park
patent: 5941087 (1999-08-01), Lee
patent: 6038880 (2000-03-01), Oh
patent: 6058722 (2000-05-01), Choi
patent: 6094931 (2000-08-01), Jeong
patent: 6105377 (2000-08-01), Jeong et al.
patent: 6106387 (2000-08-01), Smith
patent: 6595429 (2003-07-01), Carlson et al.
patent: 6619052 (2003-09-01), Nash, Jr.
patent: 2245265 (1974-03-01), None
Ashley Paul
Johnstone Colin D.
Smith Peter R.
Coleman Shane P.
HCR Incorporated
Holland & Hart LLP
Joyce Harold
LandOfFree
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