Latch for a tab and slot mounting bracket

Claim 1

In combination a mounting bracket and latch, said mounting bracket including a base plate and receiver having a slot therein, said base plate including a hooked tab means extending therefrom, said tab means for insertion into said receiver slot and interlocking with the receiver upon vertical movement relative to the receiver with a space being provided between the top of said tab means and the upper end of the receiver slot, said base plate carrying a positionable object, the improvement wherein said object includes a bore formed in general alignment with the top of said tab means, said latch including a plunger slidably positioned within said object bore, said plunger including a front end portion and a rear end portion, a spring contacting said plunger rear end portion and normally urging said plunger into an extended position with said plunger front end portion located over said tab means, said plunger front end portion contacting said receiver above said receiver slot and shifting said plunger into a retracted position when said tab means is inserted into said receiver slot, said spring urging said plunger into its said extended position with said plunger front end portion projecting into said receiver slot between said slot upper end and said tab means top upon said vertical movement of the tab means relative to the receiver whereby disengagement of the tab means from the receiver is prevented, rotatable cam means carried by said object and contacting said plunger at its rear end portion for urging said plunger into its retracted position upon rotation of the cam means to allow for withdrawal of the tab means from said receiver slot.