Locking device for the positive holding of a cover or grate...

Details Locking device for the positive holding of a cover or grate... Locking device for the positive holding of a cover or grate...

E - Fixed Constructions

02

D

94/12

E02D 29/14 (2006.01) E05C 3/04 (2006.01) E05B 35/00 (2006.01) E05B 65/00 (2006.01) E05C 19/06 (2006.01)

Patent

CA 1294475

ABSTRACT OF THE DISCLOSURE In a cover-frame assembly for a manhole or the like a locking device is provided, which comprises a closing member having at least two horizontal arms and a mounting rod provided with a bearing and actuating device. The mounting rod and the bearing and actuating device are located in a bore having a widened bore portion, whereby a shoulder is formed, on which is supported a bearing surface of the bearing and actuating device. The ends of the arms each project into a guide link, which is shaped on the inner flange of the frame. The guide link has an inclined flank, by means of which the arms are increasingly elastically deformed. In the closed position of the locking device, the arms engage in locking recesses provided on the end of each inclined flank. This leads to a self-closure with pre- tension.

585015

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