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Angle adjusting mechanism

  • US 5,154,382 A
  • Filed: 08/29/1991
  • Issued: 10/13/1992
  • Est. Priority Date: 03/26/1991
  • Status: Expired due to Term
First Claim
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1. An angle adjusting mechanism for adjusting the angle between first and second members, comprisinga first member having a first support wall, a first opening through the first support wall for passage therethrough of a tightening element;

  • the first member having a second support wall, a second opening through the second support wall for passage therethrough of the tightening element;

    a tightening element between the first and second support walls for being tightened to draw the first and second support walls together thereby to securely hold objects between the first and second support walls;

    a second member having a third holding wall disposed between the first and second support walls, the third wall having a thickness less than the distance between the first and second walls;

    at least one friction plate disposed between the second and third walls and normally in frictional engagement with the third holding wall, wherein the friction plate comprises two friction plates which are between the second and third walls and are in surface frictional engagement with each other, one of the friction plates frictionally engaging a holding fitting and the other of the friction plates engaging the third holding wall of the second member;

    means for preventing rotation of the friction plates;

    a holding fitting disposed between he second support wall and one of the friction plates, and including holding fitting support means thereon that are supported to the second support wall for enabling the holding fitting to move with respect to the second support wall toward and away from the second support wall and for preventing movement of the holding fitting in a direction across the plane of the second support wall, the holding fitting having a compressive part that engages the friction plate such that upon tightening of the tightening element to draw the first and second walls toward each other, the compressive part of the holding fitting compressively tightens against one of the friction plates for substantially uniformly distributing the compression force over the friction plate.

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