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PNEUMATIC CONSTRICTING DRUM BRAKE ASSEMBLY

  • US 20100236883A1
  • Filed: 03/17/2010
  • Published: 09/23/2010
  • Est. Priority Date: 03/18/2009
  • Status: Abandoned Application
First Claim
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1. A pneumatic constricting drum brake comprising:

  • (a) a housing with an annular array of brake elements operably disposed therein for radial movement;

    (b) a brake drum disposed for rotary movement with respect to the housing, the drum having an annular hub and an annular braking surface disposed radially outwardly of the hub about the outer periphery;

    (c) an inflatable disposed between the housing and brake elements and operable upon inflation to move the brake elements into contact with the braking surface; and

    ,(d) an annular seal disposed on each of opposite axial ends of the hub for rotation therewith, wherein the housing includes a plurality of spaced sealing surfaces each contacting one of said annular seals for sealing the interior of the hub.

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