Patent ID: 7007731
Filing Date: 2006-03-07
Classification: B25B,B25H,Y10S,Y10T

Abstract:
1. A base frame for fixture, comprising: an extruded body having a raised top central portion and a lowered wing portion at each lateral side of said raised top central portion, said top central portion being an open-topped upper channel in the form of a dovetail groove having a predetermined depth, said two lowered lateral wing portions being formed into two symmetrically identical open-topped side channels, and a big-size open-bottomed lower channel being formed below said upper channel and said two side channels; a plurality of U-shaped connecting brackets having a crossbar portion and two leg portions that have a thickness equal to a height difference between a top of said upper channel and a top of said side channel, and a plurality of internally threaded through holes provided on said connecting bracket at predetermined positions; a plurality of inserting plates having a cross section corresponding to that of said side channels and adapted to slide into said side channels, and an internally threaded through hole provided at a predetermined position; a plurality of screws adapted to sequentially thread into said threaded through holes on said connecting bracket and said inserting plate, so that an assembly of one said connecting bracket and at least four said inserting plates may be formed; a plurality of inserting blocks having a predetermined cross section, and being provided at a predetermined position with an internally threaded through hole; a plurality of washers having a central hole; and a plurality of knob-head bolts adapted to sequentially thread through said central hole of said washer and said threaded through hole of said inserting block.