Brake shoe for braking a cable
First Claim
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1. A brake shoe for a brake acting on a cable of a cable-drive conveying means, the brake shoe having a brake lining which faces the cable to be braked and, in operation bears against the cable, comprising:
- a brake shoe body; and
a brake lining having at least a first lining region formed of a first material and a second lining region formed of a second material, said first and second materials having different braking properties, said brake lining being shaped for simultaneous contact between the cable and said first and second lining regions in an operative position of the brake shoe during braking of the cable.
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Abstract
A brake shoe for braking a cable such as during speed limitation of an elevator. The brake shoe includes a shoe body supporting a brake lining facing the cable to be braked. The brake lining has at least two lining regions formed of different materials providing different effective braking properties during simultaneous contact with the cable.
26 Citations
19 Claims
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1. A brake shoe for a brake acting on a cable of a cable-drive conveying means, the brake shoe having a brake lining which faces the cable to be braked and, in operation bears against the cable, comprising:
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a brake shoe body; and
a brake lining having at least a first lining region formed of a first material and a second lining region formed of a second material, said first and second materials having different braking properties, said brake lining being shaped for simultaneous contact between the cable and said first and second lining regions in an operative position of the brake shoe during braking of the cable. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A brake shoe for a brake acting on a cable of a cable-drive conveying means, the brake shoe having a brake lining which faces the cable to be braked and, in operation bears against the cable, comprising:
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a brake lining having at least a first lining region formed of a first material and a second lining region formed of a second material, said first and second materials having different braking properties; and
a brake shoe body supporting said brake lining and being formed of a third material, said brake lining being shaped for simultaneous contact between the cable and said first and second lining regions in an operative position of the brake shoe during braking of the cable. - View Dependent Claims (17, 18)
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19. An elevator speed limiter having a pair of opposed brake shoes for acting on an elevator cable comprising:
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a pair of spaced apart brake shoe bodies;
a mechanism attached to the brake shoe bodies for moving the brake shoe bodies toward one another in response to an overspeed condition of an elevator car supported by a cable; and
a brake lining attached to each of said brake shoe bodies, each said brake lining having at least a first lining region formed of a first material and a second lining region formed of a second material, said first and second materials having different braking properties, said brake linings being shaped for simultaneous contact between the cable and said first and second lining regions in an operative position of the brake shoes during braking of the cable.
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Specification