Abstract: A latch suitable for use on the door of a walk-in refrigerator can be opened from the exterior thereof and in addition from the inside of the cabinet as well as by means of an electrical signal. The latch is provided with a vapor barrier to prevent flow of water vapor along that part of the mechanism by means of which the latch is operable from the interior of the cabinet, flow of water vapor presenting the danger of frost-formation in said mechanism which could adversely affect the operation thereof. Optionally, the latch is provided with a switch which is closed on operation of the latch to activate an external device such as a vent port or an alarm signal.

Abstract: A ball bearing roller assembly for extensible draw tracks and the like includes a plastic roller having a bore with an annular race terminating at its rear end in a resilient releasable retainer lip and at proximate its forward end in a peripheral inside flange. A steel core coaxially registers with the roller and has a cylindrical outer race terminating at its forward end in a converging arcuate face and a coaxial stub projects rearwardly from the core. Bearing balls are entrapped between the races are impeded from forward movement and releasably restricted from rear movement by the resilient lip. A mounting plate includes a centrally apertured raised circular section abutting the core rear face with the stub engaging the aperture and being upset to lock the assembly and lock the balls against rearward release.

Abstract: A drawer slide assembly includes a channel shaped track member having formed in the side webs proximate one end of the track member a pair of longitudinal slots adjacent to the track member cross web. A mounting plate has a forwardly offset inner section projecting through a slot and superimposed on the cross web a rearwardly offset outer section coplanar with the cross web. The mounting plate is secured to the cross web by grommets integrally formed with the mounting plate inner section. A ball bearing roller is mounted on the outer section front face and a latch member is pivoted to the outer section outer border. In fabrication the roller and latch member are first assembled on the mounting plate which is then secured to the cross web. Two pairs of interfitting drawer slides are cooperatively associated with a slidable drawer and side supports.

Abstract: A drawer slide structure includes a pair of slide mechanisms supporting the drawer in a cabinet, each mechanism including a pair of vertically spaced telescoping inner and outer relatively slidable channels, the inner channels being rigidly interconnected, the lower outer channel being mounted to the cabinet and the upper channel supporting the drawer. An angle member is secured to the drawer side wall and rests on the upper outer channel and is coupled thereto by a resilient latch element mounted on the upper outer channel front end and releasably engaging a front opening in the angle member horizontal web. Intercoupling is effected merely by lowering the drawer onto the channel member and uncoupling is effected merely by pressing the latch element and raising the drawer front end. A resilient loop depends from the latch element and frictionally engages the lower outer channel in the slide contracted position to prevent inadvertent withdrawal of the drawer.