Air passage opening and closing device and air conditioner...

Details Air passage opening and closing device and air conditioner... Air passage opening and closing device and air conditioner...

2007-05-08

2007-05-08

Cocks, Josiah (Department: 3749)

Ventilation

Vehicle

Condensation preventer

C454S160000

Reexamination Certificate

active

11186078

ABSTRACT:
The blowing opening portions20, 21, 22and the communicating passage opening portion27are opened and closed by the first25and the second rotary door26, the fork-shaped spring41is arranged close to an intermediate position between the door rotary shafts25b,26b, a spring force of one arm portion41bof the fork-shaped spring41acts on the first rotary door25so that a load caused by the door self-weight can be canceled, and a spring force of the other arm portion41cof the fork-shaped spring41acts on the second rotary door26so that a load caused by the door self-weight can be canceled. Due to the above structure, an increase in the door operating force caused by an influence of the door self-weight can be suppressed by a very simple structure.

REFERENCES:
patent: 5743380 (1998-04-01), Gauker
patent: 6351169 (2002-02-01), Kuge
patent: 6913529 (2005-07-01), Seki
patent: 2001/0029759 (2001-10-01), Baukholt et al.
patent: 2004/0093884 (2004-05-01), Seki et al.

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