The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 21, 2012
Filed:
Nov. 19, 2009
Yong Suk Shin, Anyang-si, KR;
Hun Soo Kim, Bucheon-si, KR;
Hee Jun Jeong, Hwaseong-si, KR;
IN Cheol Kim, Yongin-si, KR;
Yong Suk Shin, Anyang-si, KR;
Hun Soo Kim, Bucheon-si, KR;
Hee Jun Jeong, Hwaseong-si, KR;
In Cheol Kim, Yongin-si, KR;
Abstract
A fail-safe air flap control apparatus for a vehicle includes a coolant temperature sensor, a control unit, an actuator, a movable unit, a flap unit, an elastic member and a solenoid unit. The coolant temperature sensor measures the temperature of a coolant. The control unit compares a value measured by the sensor to a reference value and generates a corresponding control signal. The actuator has a rotator which rotates in a clockwise or counterclockwise direction depending on the control signal. The movable unit linearly moves under rotational force of the rotator. The flap unit includes a flap housing having an air flow slot, a flap door mounted to the flap housing to openably close the air flow slot, and a connecting rod connected to the movable unit. The elastic member applies elastic force to the movable unit in a direction in which the flap door opens. The solenoid unit is controlled by the control signal of the control unit so as to either restrain movement of the movable unit and so maintain the flap door in a closed state or to release the movable unit.