Patent ID: 7823254
Filing Date: 2010-11-02
Classification: E05D,E05Y,Y10T

Abstract:
1. A hinge assembly comprising: a first coupling member including a first section and a second section; a second coupling member pivotally connected to the second section of the first coupling member and including an anchor extended therefrom; a positioning device connected to the second section of the first coupling member, with the positioning device including a first detent pivotal with respect to the first coupling member, a second detent rotatable in concert with the first coupling member and a resilient member, with the first detent including at least one ridge formed on a first face, with the second detent including at least one indentation formed on a first face corresponding to the at least one ridge respectively, with the resilient member being formed in a shape of a dome with a predetermined curvature positioned on a second surface of the second detent; a friction device pivotally connected to the second section of the first coupling member and including a first friction member and a second friction member both slidably engaged with the anchor; and a biasing member connected to the second section of the first coupling member and imparting a biasing force to the positioning device and the friction device; wherein the second coupling member is rotatable with respect to the first coupling member; wherein the second detent is rotatable with respect to the first detent and the at least one ridge is selectively engagable with the at least one indentation respectively in order to position the second coupling member at a pivot angle with respect to the first coupling member; wherein the first and second friction members are moved to provide friction to relative movement of the first and second coupling members; and wherein sliding movement of the friction device is dependent upon engagement and disengagement of the at least one ridge with the at least one indentation respectively.