Adjustable friction hinge

  • US 8,205,304 B2
  • Filed: 05/28/2010
  • Issued: 06/26/2012
  • Est. Priority Date: 05/28/2010
  • Status: Active Grant
First Claim
Patent Images

1. An adjustable friction hinge, comprising:

  • a first hinge portion having two spaced apart first hinge knuckles with opening formed in each first hinge knuckle;

    a second hinge portion having a second hinge knuckle with an opening formed there, the second hinge knuckle rotatably fitting in a space between the two spaced apart first hinge knuckles;

    two friction bushings, one each located in the openings in the first hinge knuckles and being movable to engage with the second hinge knuckle;

    a screw which passes through the two spaced apart first hinge knuckles and through the second hinge knuckle to cause the two frictional bushing to move into frictional contact with the second hinge knuckle to adjust a force required to move the first hinge portion and the second hinge portion relative to each other;

    a threaded compression nut inserted in the opening in one of the two spaced apart first hinge knuckles; and

    a non-threaded compression nut inserted in the opening in the other of the two spaced apart first hinge knuckles, wherein the threaded compression nut and the non-threaded compression nut will, upon the screw being tightened, move the threaded compression nut and the non-threaded compression nut together to move the two friction bushings into contact with the second hinge knuckle.

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