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SELF-ADJUSTING CLUTCH OR BRAKE

  • US 3,857,468 A
  • Filed: 04/05/1973
  • Issued: 12/31/1974
  • Est. Priority Date: 04/05/1973
  • Status: Expired due to Term
First Claim
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1. An electromagnetic device comprising a friction disc mounted on a drive shaft, a driven member mounted on a driven shaft to be slidable in the axial direction, said driven member confronting said friction disc with a definite gap therebetween in an inoperated condition, an electromagnet to attract said driven member into engagement with said friction member, characterized in that there are provided an annular spring seat secured to the side of said driven member opposite said friction disc, the radially inner end of said spring seat being beNt to define an annular space between said driven member, said driven shaft and said spring seat, a slide ring contained in said annular space, said slide ring being provided with a friction member adapted to frictionally engage said driven shaft, and a spring interposed between said spring seat and said slide ring, whereby when said driven member is brought into frictional engagement with said friction disc, said slide ring is moved toward said friction disc by said spring seat.

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