公开(公告)号：US09822567B1

公开(公告)日：2017-11-21

申请号：US15480826

申请日：2017-04-06

Applicant: FIRST DOME CORPORATION

Inventor： Yuan-Ming Lin

IPC: E05D11/06 ,  G06F1/16 ,  E05D11/08

CPC classification number: E05D11/06 ,  E05D11/082 ,  E05D11/087 ,  E05Y2201/422 ,  E05Y2201/484 ,  E05Y2900/606 ,  G06F1/1681 ,  Y10T16/5406

Abstract: A hinge assembly includes a guiding unit connected between and slidable relative to first and second hinge units along arcuate lines. The second hinge unit has a pivot shaft extending through first and second rings, and a resilient washer. The second ring is rotatable on the pivot shaft relative to the first ring and has a radial extension member telescopically connected to a pivotal arm of the first hinge unit. The resilient washer pushes the second ring against the first ring. A protrusion of the first ring slides along a contact surface of the second ring having a groove so that a variable friction toque is created against relative movement of the first and second hinge units.