Patent ID: 7455471
Filing Date: 2008-11-25
Classification: F16B,Y10T

Abstract:
1. A precision adjustment joint fastening system comprising: a. a first element, said first element comprises: b. a second element, wherein said second element comprises: c. torque reaction features disposed on said first element top surface and said second element top surface, wherein said torque reaction features comprise at least two surfaces parallel to said conical center axes, wherein said torque reaction features enable precision positioning about said center axes, and holding of said first element and said second element in a desired position about said axes while securing said joint fastening system; d. a first fixed part, wherein said first fixed part comprises; e. a part for fixing, wherein said part for fixing is fixedly attached to said first fixed part, said part for fixing comprises: f. a joint fastener; g. a torque limiting element abutting said second element top surface for preventing rotation between said first and second elements, said torque limiting element comprising a threaded through hole for engaging said joint fastener and face that enable a moment to be applied to said torque limiting element; and h. a threaded nut abutting said torque limiting element and engaging said joint fastener; wherein said first conical surface of said first element is matingly received within said first fixed part conical surface, and said outer conical surface of said second element is matingly received within said first element second conical surface, and said joint fastener is disposed through said thread nut, said torque limiting element and said first through hole of said second element and extends through said first fixed part to said mounting hole of said part for fixing, said first fixed part bottom surface abutting said part for fixing top surface, wherein said second element is precisely positioned in said first element using said torque reaction features, whereby said joint fastener is tightened between said second element top surface and said part for fixing bottom surface while said second element is held stationary using said torque reaction feature; wherein said first constant angle comprises a half cone angle greater than 8 degrees for providing a frictionally non-locking connection between said first and second elements, providing for easy disassembly when said joint fastener is released; and wherein said second constant angle comprises a half cone angle in the range of 0 to 8 degrees for providing a frictionally locking connection between said first and second elements when said joint fastener is tightened to a desired torque.