Abstract: A drawer slide having a pair of parallel slide members, one of the slide members having a roller at the end opposite the roller of the one member.The slide members are channel-shaped and oppositely arranged, with the roller of one slide member received in the channel of the other slide member, the rollers carrying each respective slide member. A resilient tab is lanced out of one of the slide members adjacent an end. When the slides are installed in a drawer or cabinet, one slide member is attached to the side of a drawer while the other slide member is attached to an adjacent part of the desk or cabinet drawer opening. The tab is turned inwardly of the slide member opposite the slide member having a roller at that end. The free end of the tab is at the free end of the slide member from which it is lanced out; and, when the slide members are retracted, the tab frictionally and yieldingly engages a part of the adjacent roller to take up any play between the two slide members.

Abstract: An electrical component is supported within a housing molded of a plastics material, and the housing has an external groove which is interrupted by a plurality of peripherally spaced slots extending axially through the forward end portion of the housing. The slots provide for partially collapsing the forward end portion of the housing in response to pressing the housing into an opening within a panel so that the panel snap-fits into the groove. A retaining member is also molded of a plastics material and is mounted on the forward end portion of the housing to cover the slots. The retaining member has a corresponding plurality of circumferentially spaced and integrally molded ribs which are pressed axially into the slots to lock the housing firmly to the panel. The slots and ribs may have interfitting teeth to produce a permanent lock, and the retaining member can be adapted to carry a lens or other part which snap-fits into an annular recess formed by the retaining member.

Abstract: Multiple embodiments of fluid flow control valves are disclosed to include a plurality of unique features including; an operating spindle mounted within the valve casing to provide protection for both the spindle and valve stem, means for indicating the position of the valve stem, e.g. a dial guage mounted directly on the stem or a two-stage scale mounted on the stem and on the valve operating spindle, a stem structure which accommodates flow path sizing as well as positive no-flow sealing without the use of soft seals, adjustment structure which eliminates tolerance problems resulting from manufacturing, and replaceable flow control apparatus to permit use of a single basic valve to provide flow control in a wide range of circumstances.

Abstract: A pair of triangular cross-section racks are maintained spaced apart from but parallel to one another by a plurality of rods slidably and retainingly engaging the racks to form a supporting frame. A plurality of diamond shaped apertures are disposed within the opposed face of each of the pair of racks to retainingly receive and support opposed corners of sheet materials mounted upon the pair of racks. The slidably engaging rods permit the spacing intermediate the racks to be adjusted to accommodate the width of the supported sheet materials and the diamond shaped apertures accommodate sheet materials of different thicknesses. Means are also described for sealingly enveloping a frame loaded with hygienically cleaned pieces of sheet material.