Abstract: An airflow switch for sensing airflow or lack of same in an air duct comprising a housing base, mounting in side-by-side relation an adjustable range spring and a single-pole double-throw snap action microswitch, with the microswitch having its actuating lever operated by a bellcrank type input lever against an adjustable spring bias applied thereto by the range spring, with the housing base having an open center across which is secured a metallic disc that forms with the base an essentially isolated chamber in which the input lever is disposed, with sealing gasketing being applied to and about the disc rim, and with the disc being formed adjacent the mid portion thereof with a cross aperture through which the shank of a vane assembly extends for securement to the bellcrank input lever for operation of the vane assembly against the range spring bias; the vane assembly includes a vane adapted to be disposed well within the duct, and the vane assembly shank is dust sealed thereabout adjacent the disc through ap

Abstract: An emergency remover device for ejecting an aircraft canopy preliminary to in-flight ejection of personnel from the aircraft, which device is a ballistic gas actuated telescoping multi-cylinder assembly that is normally keyed in retracted relation and comprises an inner cylinder, an intermediate cylinder, and an outer cylinder, with the assembly arranged for upright incorporation in the usual aircraft canopy actuating extensible and retractable strut, in which assembly the outer cylinder is fixed against movement relative to the aircraft on emergency actuation of the device, and the inner and intermediate cylinders act under ballistic gas pressure released within the device to effect the imposition on the canopy of the needed unbalanced force in a more or less uniform manner to effect the application to the canopy of maximized release momentum prior to the remover device to effect the application to the canopy of maximized release momentum prior to the remover device reaching its extending length, and to prov

Abstract: A pressure transducer in the nature of a differential pressure transmitter including an instrument housing defining a chamber in which is mounted a sensing transducer one of several known types powered to provide a gauge signal that is to be supplied to instrumentation such as a controller or recorder, with the pressure sensing arrangement of the instrument being in the form of two oppositely coiled bourdon tubes mounted one on either side of the sensing transducer, with like ends of the tubes each mounting an output lever, which levers are respectively resiliently connected to the movable element of the transducer and in an oppositely acting manner, with the other ends of the respective tubes being separately connected to a mounting block arranged to provide for connection of the respective tubes to separate, externally located, sources of pressure fluids, and with one of the output levers being adjustable as to length for calibrating the instrument so that the action of the two tubes on the sensing transduc

Abstract: A charcoal grid arrangement for barbeque grills, which grills are of the type comprising an open top receptacle defining a floor that is apertured at its center to receive and hold a discretely separate bowl forming a tinder receiver and ash collector at the central axis of the receptacle, with the receptacle supporting a food cooking grid across same from which is adjustably suspended the charcoal grid over the tinder receiver, with the charcoal grid itself being in the form of an open framework comprising a plurality of spaced apart rods of similar gauge fixed together in essentially parallel coplanar relation to have the charcoal grid define a central axis that is aligned with that of the receptacle, with the charcoal grid on its underside having a pair of spaced apart holder rods secured thereto in spaced apart coaxial relation and vertically aligned with a pair of coaxially aligned radii of the charcoal grid central axis and defining confronting but spaced apart end portions, and with the charcoal grid a

Abstract: A housing adapted to be attached to a pistol grip for storage of a fast loading plural cartridge holder for revolvers.

Abstract: A protective covering for annular objects, such as caster wheels, which covering consists of a continuous band of heat-shrinkable plastic material defining spaced marginal edges thereabout, which band is proportioned thereabout to be closely received over and about the tread of the caster wheel in overlapping relation to the wheel along both side edges of the wheel tread, for heat shrinking thereagainst, whereby the band is tensioned against the wheel tread, and the wheel tread side edges, in protective relation to the tread, which band is formed to provide what becomes a tear or release strip that functions to sever the band, when removal of the covering is desired, from one side edge of the band to the other.

Abstract: A labeling device in the nature of an attachment for application to a labeling machine of the type disclosed in Wesley U.S. Pat. No.

Abstract: A piston vibrator adapted for use in vibrating insulated structures through a rod or other vibration-transmitting structure, the vibrator including a piston slidably disposed in a cylinder defined in a housing, the piston associated with a strike surface and a selective adjustment mechanism associated with the housing which can be used to eliminate slack between the strike surface of the vibrator and the rapping rod and which can be further used to externally adjust the pre-load on the rapping rod and to align the vibrator axially with the rod and to compensate for thermal expansion and contraction.

Abstract: A grommet arrangement for application to the upwardly facing working surfacing of an office desk top for acommodating application to and through the desk top of the plug and cabling of electrical and/or electronic equipment to be used at the desk, comprising a sleeve defining a cylindrical side wall in circumambient relation about the sleeve bore that is proportioned to freely receive both the equipment cabling and its plug, with the sleeve further defining a flanged end and a flanged free end, with the sleeve flanged end comprising a planar edging of quadrilateral configuration that is to seat flush against the desk top working surfacing about a hole formed in the desk top to receive the grommet cylindrical side wall, which grommet planar edging defines a recess that lies in a plane which extends crosswise of the grommet bore and receives a grommet closing cover snap fit fashion, with the grommet cover being shaped to define a cross slot and shiftably carrying on the underside of same an adjustable panel tha

Abstract: Methods and apparatus for the recovery of petroleum origin hydrocarbons and other liquids from underground at sites of refineries, oil, gasoline and other liquid storage and distributing facilities, tie creasoting plants, and the like. Pursuant to the invention, for petroleum origin hydrocarbon recovery, separate liquid handling devices, each in the nature of a vessel or canister and having liquid trapping and ejecting facilities that are free of mechanical pumping action, are employed for raising the ground water and liquid hydrocarbons that accumulate on the ground water table, respectively, through which the well or wells extend, and under the static pressure of the compressed air.

Abstract: A tool for implanting fertilizer spikes in the ground with a rod slidably disposed in an open ended hollow tube which is adapted to be inserted into the ground to a predetermined depth. The fertilizer spike engages the end of the slidable rod, the hollow tube and spike are pushed into the ground and the spike is expelled from the tube by actuation of the rod when the tube is removed from the ground.

Abstract: A quick release aerator is provided for discharging intermittent bursts of pressurized air into a storage container to implement material flow. The unit includes a piston and valve assembly disposed internal to a pressure tank. The assembly features one or more vent ports defined through the sidewalls of a cylinder to allow the passage of pressurized air from the tank to an outlet orifice. The total area of the vent ports equals or exceeds the area of the exhaust port, thereby maximizing the effect of the burst of pressurized air.

Abstract: This invention relates to a composition for melting ice, particularly for melting ice from driveways, sidewalks and the like.The composition includes a salt, more particularly sodium and/or potassium chloride and an amide such as urea.The method of making the composition includes the steps of (1) sizing the salt, (2) spraying a liquid amide thereon, and (3) drying the resultant composition.