A - Human Necessities – 47 – B
Patent
A - Human Necessities
47
B
A47B 88/00 (2006.01) A47B 63/02 (2006.01) E05C 17/32 (2006.01) E05F 1/10 (2006.01)
Patent
CA 2089856
ABSTRACT A cabinet is disclosed for storing planar sheets such as blueprints having a two stage door latch mechanism. The latch permits the cabinet door to be opened to a sort position wherein holding hooks supporting the hanging objects are in a closed position so that the sheets may be sorted through. The door can then be opened to a retrieval position corresponding to the holding hooks in the open position so that sheets may be added to or removed from the cabinet. In one form of the latch a slotted arm is pivotally attached to the door at one end and coupled to the back wall by a spring. A cam having an open slot is pivotally mounted to the arm at one end and while the other end is provided with a ball catch for locking the cam to the arm. A switch is constrained to move in the slots. The end of the cam slot spaced from the pivotal connection is displaced from the cam slot longitudinal axis so that when the switch contacts that end of the cam slot, the cam is pivoted downwards thereby disengaging the ball catch from the arm. The switch abuts the end of the cam slot thereby stopping the arm and holding the door in the sort position. Moving the door backward a short distance disengages the switch from the cam whereby the latter pivots downwards causing the switch to exit the cam slot whereupon the door opens to the retrieval position. As the door is returned to the closed position a ramp re-engages the cam in its original position.
Lupynec Michael
Fetherstonhaugh & Co.
Plan Hold Canada Inc.
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