System for controlling the opening and closing of shield...

Details System for controlling the opening and closing of shield... System for controlling the opening and closing of shield...

A - Human Necessities

42

B

A42B 3/22 (2006.01)

Patent

CA 2043448

ABSTRACT OF THE DISCLOSURE An elongated hole is provided in a shield plate to extend in a direction to open and close the shield plate, and a stopper pin is fixedly mounted on a cap body and adapted to be fitted into the elongated hole, so that the shield plate is restrained from opening more than a predetermined opening angle by abutment of the stopper pin against one end wall of the elongated hole. In addition, a cam member is mounted on the cap body for pushing up an end edge of the shield plate to permit the slipping of the stopper pin out of the elongated hole. These ensure that the shield plate can be restrained to a position corresponding to the predetermined opening angle, thereby preventing any clouding of an inner surface of the shield plate, while preventing the inadvertent opening of the shield plate by wind pressure.

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