Abstract: A latch is controlled to latch and unlatch a device by using a portion of the insertion and extraction movement of the device being latched. The latch incorporates a pivoted latching member carried on the device being latched. The end or latching surface is positionable behind a latch bar, preventing the extraction of the latched device. The latch member is displaced to latch or release by a spring disposed between the frame of the device being latched and the latch member. When the actuator member is withdrawn from its ineffective position and if the latch arm occupies a latched position, the actuator member engages surfaces on the latch member and the module frame which are too closely spaced to permit free passage of the engaging portion of the actuator. This engagement with the surfaces results in spreading the engaged portions of the module frame and the latch member, thereby pivoting the latch member to unlatch the latching end of the latch member from a retaining surface.

Abstract: A latch is controlled to latch and unlatch a device by using a portion of the insertion and extraction movement of the device being latched. The latch incorporates a pair of tongs. The ends or latching extensions of the tongs are positionable behind a latch bar, preventing the extraction of the latched device. The tongs are positioned under the control of an actuator or latch control member which is moved to latch or unlatch the latch. The actuator member is pushed into the host device once the device being latched is positioned in the desired position. The tongs respond to the pushing of the actuator member by spreading the input ends under the influence of connecting input links moreover, the latching extensions are pivoted toward each other, positioning the latching extensions in a latched position. The latch extensions are spread to release the latch and the latched device by pulling the actuator member, pulling the input links as well as the input ends of the tongs, and thereby pivoting the tongs.

Abstract: A latch mechanism using a natural unlatching, releasing, pull movement has a slidable latch release which is carried on a device being latched, such as an electronic module. This slidable latch release has a pair of recesses or cavities at least partially defining cams that engage and displace a latch member from engagement with a latching surface on the device being latched. A latch release member is provided with a pair of wing members that are resilient and are deformed as a result of movement of the latch release relative to the latched device. Deformation provides a bias to restore the latch release member to a position capable of permitting latching upon the reinsertion of the device into a host device, such as a computer or the like.