Patent ID: 7040711

Claim:
A mechanism comprising: a base; first and second members having a range of movement relative to one another, each member having a generally smooth curvilinear load bearing surface and a plurality of teeth adjacent the load bearing surface, wherein the load bearing surfaces are in contact to transfer loads, and wherein the teeth of the first and second members are in engagement, at least one of the first and second members having teeth arranged in an arc that extends less than three hundred and sixty degrees about an axis defined by the arc, and wherein the first member is rotatably mounted to the base; a stop limiting an allowable range of movement of a selected one of the first and second members relative to the other one of the first and second members; an adjustment member movably engaging the base, the adjustment member engaging the first member such that movement of the adjustment member rotates the first member; a resilient member engaging the base and the second member and rotatably biasing the second member relative to the first member.