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Brake regulating apparatus for an elevator car

  • US 5,648,644 A
  • Filed: 10/18/1994
  • Issued: 07/15/1997
  • Est. Priority Date: 10/18/1993
  • Status: Expired due to Term
First Claim
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1. An apparatus for applying a regulated braking force to an elevator car comprising:

  • a brake shoe for attachment to an elevator car;

    a brake pad for engaging a running surface formed on a guide rail along which the elevator car travels, said brake pad being retained by said brake shoe for movement relative to said brake shoe toward and away from the running surface;

    a fastening housing for attachment to an elevator car and having at least one recess formed therein;

    a brake guide attached to said brake shoe and being retained in said recess;

    at least one cushion pad formed of an elastic material and mounted in said recess in contact with said brake guide whereby said brake shoe and said retained brake pad follow deviations in a shape of the guide rail during application of the regulated braking force to prevent generation of additional forces on the guide rail; and

    a brake actuator including a cylinder chamber formed in said brake shoe and a piston slidable in said cylinder chamber and being connected to said brake pad whereby selective application of pressured fluid to said cylinder chamber and removal of pressured fluid from said cylinder chamber moves said piston in said cylinder chamber and moves said brake pad into engagement with the running surface and out of engagement with the running surface to apply a regulated braking force to the elevator car.

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