F - Mech Eng,Light,Heat,Weapons – 16 – D
Patent
F - Mech Eng,Light,Heat,Weapons
16
D
188/209
F16D 65/38 (2006.01) F16D 65/14 (2006.01) F16D 65/22 (2006.01) F16D 65/56 (2006.01)
Patent
CA 1260412
ABSTRACT OF THE DISCLOSURE Disclosed is an automatic brake adjustment assembly (50) for maintaining a desired disengaged clearance (c) between a frictional brake lining (17) and a moveable object to be braked. Assembly (50) includes a cam member (2) that is moved in opposite axial directions upon the respective engagement and disengagement of the brakes by the operator causing a cam follower (10) to move a nut (16) in corresponding opposite axial directions which in turn is threadingly engaged with and operates to move a piston (18) in opposite axial directions along a frame (24) and accordingly cause brake lining (17) to move towards and away from the object to be braked. Cam member (2) carries a spring force generation means in the form of rack (38) that is loosely held until the axial movement of cam member (2) exceeds a predetermined distance (n) above which a portion of a ramp (34) of rack (38) engages lip (33) of at least one pin (32) fixed to frame (24) and restrains rack (38) sufficiently that an end thereof is able to engage and rotate gear (12) which, in turn, rotates nut (16) which advances piston (18) and liner (17) towards the object to be braked a distance sufficient to maintain desired clearance (c).
520877
Borden Ladner Gervais Llp
Corporation Eaton
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