Appeal No. 96-4144 Page 8
Application No. 08/169,019
the block and which, as a matter of structural and operative
convenience, may be arcuate in cross-sectional configuration. A
rod member 30 is provided in block 24 to clamp and unclamp the
circuit board 14. The rod member 30 is provided with opposite
parallel flat clearance faces 31 and 32 and camming surfaces 33
and 34. Acting in part to hold the rod member 30 within the
pocket 29 is a leaf spring member 39. The leaf spring member 39
is provided on one side with a leaf 40 coextensive with the
length of the block 24. The leaf 40 is urged resiliently in a
direction from right to left, as viewed in Figure 4, to bear
against the clearance face 31, hold the rod member 30 in its
position within the pocket 29, and at the same time provide
sufficient clearance in the slot 28 of breadth greater than the
thickness of the circuit board 14 so that the circuit board can
be slid into the slot with an ultimate minimum amount of
frictional resistance approaching zero. Once the circuit board
is in position, the rod member 30 is rotated approximately ninety
degrees about its axis of rotation so as to bring the camming
surface 33 into engagement with the leaf 40 and tilt the leaf
resiliently into engagement with the adjacent edge surface of the
circuit board, as shown in the right-hand version of Figure 4.
In this manner camming action of the rod member 30 locks the
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Last modified: November 3, 2007