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Door control mechanism

  • US 3,091,819 A
  • Filed: 09/20/1960
  • Issued: 06/04/1963
  • Est. Priority Date: 09/20/1960
  • Status: Expired due to Term
First Claim
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1. THE COMBINATION OF A DOOR FRAME HAVING A SIDE MEMBER AND A HEADER SECURED THERETO, A SPRING BIASED DOOR MOUNTED IN THE SAID FRAME, A HINGE PIN MOUNTED IN THE HEADER AND EXTENDING INTO THE DOOR FOR ROTATIVE MOVEMENT THEREWITH, AN ELASTIC BLOCK MOUNTED IN THE SAID HEADER HAVING AN ANGULAR EXTENDING EDGE PORTION, A BRAKING SHOE MOUNTED UPON THE SAID BLOCK ALONG THE ANGULAR EDGE PORTION HAVING AN ARCUATE-SHAPED BRAKING SURFACE THEREON, AN ARM ON THE HINGE PIN IN ENGAGEMENT WITH THE SHOE ON THE SAID BLOCK AND EXPANSION MEANS IN THE SAID BLOCK WHEREBY THE FRICTIONAL RELATIONSHIP OF THE SHOE AND THE ARM IS CONTROLLED.

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