Abstract: A flat cable strain relief fitting accommodates various thicknesses of cable by providing a first fitting half which includes stair-step type slots which support a bar at various heights above the major surface of the first fitting half. The bar thus is adjustable in height to contact different thicknesses of cable and force the cable into clamping contact with a second half of the strain relief fitting.

Abstract: A waterproof electrical splice enclosure for receiving a single electrical connector splicing the ends of a plurality of insulated electrical conductors extending out of the connector in the same same direction and parallel to one another. The enclosure comprises an elongated hollow tube having one open end and one closed end having a cross-section slightly larger than the connector. A connector retainer is provided to retain the electrical connector adjacent the closed end of the tube with the insulated electrical conductors extending out of the open end of the tube, and the tube contains a waterproofing fluid which will not flow out of the tube but which will flow around the connector as it is slid into the tube to provide a waterproof seal around the connector and around and between the insulated conductors. A cap is connected to the tube at its open end by a hinge and has a bulbous protrusion to fit into and close the open end of the tube, and latch retains the cap in the closed position.

Abstract: This invention consists of a wide-angle, multi-element condenser system for an overhead projector that provides uniform illumination at the plane of the projection transparency, and a well-formed lamp image at the entrance pupil of the projection lens. This is accomplished by using a combination of a glass spherical meniscus lens, a glass plano-convex spherical lens and a plastic aspheric Fresnel lens system.

Abstract: Electrical connector attachment tooling for attaching an electrical connector to a flat, multiconductor cable includes leaf springs, cam-actuated gripping means for locating and retaining the connector in proper relationship to the cable.

Abstract: A catalytic converter utilizing a resilient, flexible shot-free ceramic fiber containing mounting mat for mounting a monolith within a metallic casing is disclosed. The mounting mat may be comprised of shot-free ceramic fibers alone or preferably is comprised of a composite of shot-free ceramic fibers in combination with an intumescent sheet material.

Abstract: A double-walled cylinder in the form of an exhaust pipe, muffler, or catalytic converter is provided less heat or sound conductive in its radial direction by filling the annular gap between the inner and outer cylinder with low-density, high-temperature resistant, inorganic spheroids.

Abstract: A full face negative pressure respirator having a replaceable viewing window is described. The respirator is especially useful as a welder's negative pressure full face respirator where the viewing window is subject to chipping and/or scratching that can impair the vision of the wearer. The full face negative pressure respirator of the present invention utilizes a viewing window insert assembly that comprises an integrally molded curved insert wall and viewing window chamber that accommodates easy replacement of an optically damaged viewing window while providing a gas tight seal between the viewing window and the insert assembly which is not subject to failure by an increase in negative pressure within the facial cavity of the respirator during normal use conditions.

Abstract: A container for transporting hazardous liquids has a self-sustaining, leak-proof housing, a removable cover that can seal the housing, and a sorbent body resting on the flat bottom of the housing, which body comprises polyolefin microfibers and has a solidity of from 7 to 25%. The polyolefin microfibers preferably are particles, and the particles preferably are microwebs produced by divellicating a polyolefin microfiber web. When the container is used to transport sorbent materials that have been saturated by liquids of a chemical spill, the sorbent body ensures against there being any free liquid in the container.

Abstract: A shipping or secondary container, which can safely transport a plurality of breakable primary containers of a variety of sizes and shapes, has a pair of rigid shells that mate. A batt of sorptive material fills each shell, and a normally tacky, discontinuous adhesive layer covers the exposed face of at least one batt. The shells can be vacuum formed from a sheet of thermoplastic resin that is 0.25 to 0.5 mm in thickness. The two shells preferably are identical to each other. To permit them to interlock, each shell has an upstanding wall that is formed with both tongues and grooves which telescopically mate with the tongues and grooves of the other shell.

Abstract: A disk cartridge for a rotatable recording disk includes a slidable shutter for providing access to the recording disk through the disk cartridge. A unique mounting for a return spring for the shutter allows the return spring to be of a maximum length which allows increased control of the forces generated by the return spring. The disk cartridge is further provided with a locking mechanism for preventing movement of the recording disk within the disk cartridge during storage.

Abstract: A liquid crystal display assembly for use with a reflective type overhead projector includes a liquid crystal display and an attached Fresnel reflector portion which is off-axis in that the center of the reflector is not included in the Fresnel reflector portion so that a spurious bright spot coinciding in the projected image with the center of the Fresnel reflector is eliminated.

Abstract: Mixing concentrates requires the precise dispensing of predetermined amounts of concentrate into predetermined amounts of liquid and such mixes can be obtained by the use of a system having two positive displacement pumps, one for pumping larger volumes with each operation than the second pump and a pressure regulator to maintain a predetermined pressure on the solvent carrier fluid for the mixture.

Abstract: A drive for a recording disk includes a drive motor and a head transport mounted on a chassis which has a coefficient of expansion equal to that of the disk to reduce tracking errors caused by differential expansion of the chassis and the disk due to environmental changes.

Abstract: The exhalation valve of a respiratory face mask, while taking up only a small area, can afford extraordinarily low pressure drop for easy breathing if constructed with a valve seat having a seal edge that defines an orifice and also forms a parabola in the plane bisecting the mask. Preferably the seal edge forms a rectangle as viewed against the direction of composite fluid flow through the valve, and a flexible flap is attached to a bridge across the center of the orifice at the apex of said parabola, each end of the flap being free to be lifted to allow fluid to flow through the valve.

Abstract: A disk cartridge for a rotatable recording disk includes a slidable shutter for providing access to the recording disk through the disk cartridge. A unique mounting for a return spring for the shutter allows the return spring to be of a maximum length which allows increased control of the forces generated by the return spring. The disk cartridge is further provided with a locking mechanism for preventing movement of the recording disk within the disk cartridge during storage.

Abstract: Stretchable laminate constructions based on an elastic fabric and a substantially non-elastic film which are held in intimate contact with one another by means of a discontinuous pattern of adhesive are disclosed. When the laminate constructions of the invention are in a relaxed state, the length of the film between adjacent adhesion points along the direction of stretch of the elastic fabric is substantially equivalent to the length of the elastic fabric between the same adhesion points when the construction is extended to its elastic recovery limit. A preferred embodiment of the invention utilizes waterproof breathable non-elastic membranes to produce laminate constructions suitable for clean room and protective garment applications.

Abstract: A catalytic converter utilizing a resilient, flexible shot-free ceramic fiber containing mounting mat for mounting a monolith with a metallic casing is disclosed. The mounting mat may be comprised of shot-free composite of shot-free ceramic fibers in combination with an intumescent sheet material.

Abstract: A tape reel hub includes an inner ring, an outer ring and angled ribs connecting the two rings. The ribs deflect upon compression of the outer ring to prevent the transmission of this compression to the inner ring.