Opening/shutting apparatus for flow control

Details Opening/shutting apparatus for flow control Opening/shutting apparatus for flow control

2006-11-28

2006-11-28

Jacyna, J. Casimer (Department: 3751)

Valves and valve actuation

Mechanical movement actuator

Linkage

Reexamination Certificate

active

07140594

ABSTRACT:
An opening/shutting apparatus for flow control includes a damper door that opens/shuts a fluid channel of an interior of a duct, a knob that adjusts the damper door, a link coupled to an end of the damper door, and a rod hinged with both the knob and the link, the rod transmitting a rotational force of the knob to the link. The rod is configured to have a hinged structure where one end thereof is hinged with the link and the other end is hinged with the knob, and, when the interior of the duct is hermetically sealed, a rotational center of the knob is placed on a straight extension line connecting respective hinged points of the rod.

REFERENCES:
patent: 5938174 (1999-08-01), Gunder et al.
patent: 6386511 (2002-05-01), Watanabe et al.
patent: 1998-038245 (1998-09-01), None
patent: 10-2003-0055383 (2003-07-01), None
English Language Abstract of KR 1998-038245.
English language Abstract of KR 10-2003-0055383.
U.S. Appl. No. 11/002,226 to Lee, filed Dec. 3, 2004.

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