Abstract: The inwardly-extending, peripheral frame of an air conditioner, exposed after the removal of the filter-enclosing cover thereof, grippingly receives U-shaped clamps thereon. The clamps have extending ledges to which are fixed upstanding studs. A cover, having a center recess, has outwardly extending flanges in which are formed slots. The studs are aligned with the slots and the cover is set thereover and wing nuts are tightened onto the studs to clamp the cover in place. The cover recess has a pad of resiliently compressible material fixed therein to prevent air drafts from passing through the air conditioner into the room into which the frame extends, and to dampen outside traffic noise, and other unwanted sounds.

Abstract: A hydrofoil in close proximity to an outboard surface of a rotatable slurry screen, and a hydrofoil in close proximity to an inboard surface of the screen, cooperate to create high and low slurry pressures at the surfaces which result in causing the slurry to surge through the screen to backwash the latter, thereby dislodging slurry-borne substances which tend to clog apertures in the screen.

Abstract: An annulus, with outwardly projecting limbs, comprises the blank from which a valve retainer is formed. The retainer employs the limbs to latchingly engage an internal, recessed land in a cylinder, in order to support a valve within the cylinder, while a valve cage is thereafter set into the cylinder independently. The limbs of the blank are bent into a substantially normal disposition, relative to the annulus, albeit slightly splayed outwardly to insure a resiliently-effected latching thereof with the land, and free ends of the limbs have bights formed therein to present latching surfaces for engaging the land.

Abstract: A double diaphragm pump subassembly, having a pair of diaphragm mounting plates, wholly confines an air valving mechanism between the plates. The mechanism is modular in nature, being substantially devoid of fasteners, and is nested in the plates for easy removal and parts replacement.

Abstract: To minimize metal-to-metal engagements of valve components, and relative movements therebetween, as an end toward reducing wear, the valving plate has an integral bushing, and both the plate and the bushing are formed of a non-metallic material. The bushing, therefore, moves with the valving plate; it has grooves formed therein in which to nest the plate-biasing spring.

Abstract: Flexible film of plastic material, such as "Mylar", and coated with metal to provide a mirror surface, can be sewn onto a normally obscured portion of apparel, such as a necktie, to provide a discreet mirror. Alternatively, the mirror-film can be cemented in place, or can have "Velcro" hooks or loops adhered thereto for engagement with the complementary hooks or loops of a sheet thereof borne on an under-portion of clothing, i.e., a sweater, or the like, or the inner flap of a pocketbook, under a sun visor, or an inner fold surface of a wallet.

Abstract: A substantially cylindrical, plug-type configuration of the element offers a mass which is less responsive to non-uniform and unsteady pressures, and channeling therein opens centrally, and about the periphery thereof, onto a recess formed in an end of the element which closes onto a valve seat. The channeling and recess are cooperative to assure that the balance-end of the element will have average, representative pressures conducted thereto.

Abstract: A plate, having a centrally located, tapped hole, which extends only about half-way into the plate, seats a fluid seal therein. The tapped hole threadedly engages the externally-threaded nozzle of a faucet to close off the faucet. The plate further has a plurality of further, throughgoing holes formed therein, spaced apart forty-five degrees of arc, about a common radius from the radial center of the tapped hole. A shackle of a padlock is passed through a given one of the plurality of throughgoing holes, which is (a) closest to the bonnet, stem and handle of the faucet, and (b) would be the first to pass under the faucet, if the plate were to be unscrewed therefrom, and the shackle is locked into the body of the padlock. The padlock is so positioned that it will impact with the faucet, if the plate is turned, to prevent withdrawal of the plate from the faucet.

Abstract: The cylinder, having a central axis, has its bore for the rolling piston formed therein perpendicular to the axis. Too, the slot for the sliding vane is traverse the axis, and opens onto the piston bore. A channel formed through the cylinder, at one side of the slot, and another channel formed through the cylinder at the other side of the slot, provide for the admittance and discharge of intake gas and compressed, discharge gas, respectively. The compressor is built up from such a cylinder, with a piston-driving crankshaft, a biased, sliding vane, and bearing-supporting and lubrication-accommodating end cover assemblies.

Abstract: A body, having a throughgoing bore formed therein has an intermediate land. A first portion of the bore is threaded to receive a spark plug therein, and an outer portion of the body is threaded to accommodate its insertion into a cylinder head. A channel, opening externally of the body, and onto said land, is provided for admitting fuel therethrough to a body-held spark plug.

Abstract: In lieu of the customary valve assembly-holding setscrew, a ram, slidably engaged with the central bore of a valve housing cover, is adjustably held against the valve assembly by a plate-type ram cover. The latter cover is bolted to the valve housing cover. To insure that product gas can not escape from the valve housing, the ram has an annular shoulder thereon which prevents its removal outwardly from the housing cover; the ram can only be removed via the inner surface of the housing cover. Too, the ram has an O-ring seal thereon which is confined between the ram and the housing cover.

Abstract: A body having a longitudinal axis, and parallel bearing surfaces at opposite axial ends thereof, has grooves formed therein, adjacent both axial ends thereof for receiving sealing rings therein. The body is interposed between fluid-control valves which are centrally supported, in spaced-apart disposition on a reciprocable rod, for abutting engagement thereof with the outermost peripheries of axial ends of the valves to support the valves and prevent bending moments from being exerted on the valves, and the grooves-receivable sealing rings offer enhanced fluid sealing over that carried by the valves themselves.

Abstract: The cylinder head has a conventional spark plug, therein, for engine start-up, and has a precombustion chamber unit mounted therein as well, for cleaner, more stable normal running of the engine. The method defines the reaming out of spark plug apertures in the head to accommodate the installation of the precombustion chamber unit.