F - Mech Eng,Light,Heat,Weapons – 16 – D
Patent
F - Mech Eng,Light,Heat,Weapons
16
D
188/149
F16D 55/22 (2006.01) F16D 55/224 (2006.01) F16D 65/32 (2006.01)
Patent
CA 1072025
CALIPER BRAKE ACTUATING CYLINDER ABSTRACT OF THE DISCLOSURE Pnuematic caliper brake actuator having diaphragm, piston member and cylinder body. Cylinder body has outer por- tions having clearance recesses therein to accept the outer ends of arms carrying brake shoes. At least two return com- pression springs extend between the piston member and outer portion of cylinder body, the springs having outer ends straddling the clearance recess and inner ends against piston member to retract piston when fluid pressure is reduced. The clearance recesses are hollow projections positioned off- centre and symmetrically relative to outer portion of cylinder and spaced apart to accept arm outer end therebetween and accept outer ends of the return springs therein to restrict lateral movement of springs. Overall dimension across outer faces of projections on opposite sides of the cylinders is ap- proximately equal to an overall dimension across the outer por- tions of the opposed arms. This results in extreme outer portions of moving portions of the caliper being generally within planes containing fixed portions of the caliper, re- sulting in an overall dimension across outer ends of the arms being less than would be possible with a single spring as used in prior art cylinders.
299416
Kobelt Jacob
Na
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