Browse Prior Art Database

Hidden Latch

IP.com Disclosure Number: IPCOM000079495D
Original Publication Date: 1973-Jul-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Doody, GE: AUTHOR

Abstract

Positive latching is provided by a latch completely hidden behind a door or panel. The latch is operated by applying pressure to the door or panel causing it to move a fraction of an inch and actuating a cam, ratchet, cam follower catch and spring mechanism.

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Hidden Latch

Positive latching is provided by a latch completely hidden behind a door or panel. The latch is operated by applying pressure to the door or panel causing it to move a fraction of an inch and actuating a cam, ratchet, cam follower catch and spring mechanism.

The mechanism is shown in a latched condition in Fig. 1 with actuator 10 and latch 13 in contact with frame flange 20. When the panel or door 14 is pushed in the direction of arrow 21, actuator 10 moves lever 11 and rotates ratchet 12 through 45 degrees. Ratchet 12 is an integral part of the cam so the cam also rotates 45 degrees. While door 14 is moving towards flange 20, latch 13 moves away from flange 20 by the action of its cam surface with cam 15, as shown in Fig. 2. Upon releasing pressure 21, door 14 springs free to the position shown in Fig. 3, with latch 13 remaining in this position until the door or panel is closed. The action of the mechanism is the same on closing, except that latch 13 once again moves into the latch position relative to frame flange 20 as shown in Fig. 1, when flange 20 engages actuator 10.

The latch can be mounted so as to be completely invisible to the front of the panel and does not require handles, buttons or special tools for operation.

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