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Patent No. 5107620

Electrified Table Cloth

An electrified table cloth for preventing crawling insects from gaining access to the consumer's food or drink.

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Patents Published on 07/08/1980


See All Patents Issued In 1980


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NumberTitleIssue Date
4211132Apparatus for on-line defect zoning
A non-marking type method and apparatus for optimizing the recovery, at on-line speeds, of salvageable sheet product from a large width web, utilized in conjunction with a radiation scanning type inspection system....
07/08/1980
4211133Slicer outlet extender
The slicer outlet extender for attachment to the outlet housing of a slicing machine, such housings opening downwardly and being larger at the lower ends, the extender comprising an elongated piece of material which wraps around the outside of the lower e...
07/08/1980
4211134Self-aligning fence for radial arm saw
A radial arm saw has a vertical rotational axis which is displaceable from the plane of the work fence through predetermined distances. A mechanism is provided through which the work fence will be automatically shifted on a linear path in response to angu...
07/08/1980
4211135Cutting width modifying means for a longitudinal web cutting machine
Cutting width modifying means for a machine for cutting a web of material and having groups of cutting elements of the bottom blade kind for longitudinal cutting of the web wherein the cutting elements are provided as sleeves mounted on a shaft, releasabl...
07/08/1980
4211136Cutter assembly for saw chain
A saw chain is constructed by a cutter assembly having a first cutter member and a second cutter member arranged sequentially and attached together by an attachment arrangement including a pair of links, a pair of pins, and suitable rollers. The cutter me...
07/08/1980
4211137Apparatus for cutting stiff sheet material
Apparatus for cutting stiff sheet material. A straightedge barrier aligns the material. A back supporting the material includes a first bar perpendicular to the straightedge barrier. Along one edge of the first bar is a straight strip blade having a shear...
07/08/1980
4211138Harmonic formant filter for an electronic musical instrument
A fixed formant filter for a digital electronic instrument of the type in which musical tones are generated from waveshape data calculated independently of frequency of the tone from constituent generalized Fourier components. The Fourier components are i...
07/08/1980
4211139Pickup mechanism
In the construction of a pickup mechanism for electric pianos, the bridge is mounted on a vibration transmitter plate of minor acoustic transmission loss and coupled to the piano plate via vibration absorbers and the pickup unit for converting acoustic vi...
07/08/1980
4211141Pedal control circuits for electronic piano
Pedal control circuits for use with an electronic musical instrument, such as a piano, which provide control functions analogous to the actions of a sustaining pedal, of a sostenuto pedal, and of a volume pedal of a conventional piano. Damper circuits ope...
07/08/1980
4211142Sound reflector for grand pianos
A sound reflector for use with a grand piano to reflect sound from the underside of the soundboard toward the rear side of the instrument, the reflector comprising a large panel of sound reflective material underlying the soundboard at an inclined angle w...
07/08/1980
4211143Musical instrument
A musical instrument having an adjustable elongated member supported in an upright position on a collapsible base. A flat flexible sheet of metal, or other suitable materials capable of producing a musical tone when struck, is adjustably mounted on the up...
07/08/1980
4211144Adjustable pitch drum
An adjustable pitch drum consists of a drum shell having an open end and a drum head pitch changing mechanism and supporting means therefor supported on said shell. The pitch changing mechanism consists of an annular, externally threaded member supported ...
07/08/1980
4211145Blind rivet
A blind rivet fabricated out of thermoplastic material and having a sealing ring spaced from the set head. The sealing ring has a diameter larger than the tubular rivet and spaced from the head to be disposed within the through-holes of the coupled parts ...
07/08/1980
4211146Rifle gun barrel
To increase the strength, rigidity and accuracy of a rifle gun barrel, a multi-part composite rifle barrel is created by enclosing the inner rifled tube with an outer sleeve, the two fastened together in a way that introduces compression in the outer part...
07/08/1980
4211147Servo-control valve for a linear hydraulic motor
A servo-control valve for a linear hydraulic motor wherein the control valve piston is isolated from the side loading of a cam and roller by employing a cam follower plunger, as a separate detached element coaxial with the piston. The valve piston and the...
07/08/1980
4211148Hot gas motor
A multi cylinder, rotary valve, hot gas or fluid powered motor. An inner y having an output shaft, a plurality of cylindrical chambers, a corresponding plurality of sliding pistons, one within each chamber, and a pivot plate for supplying a reaction forc...
07/08/1980
4211149Split lock ring for locking actuator and method for manufacturing the same
A radially expandable and contractable split lock ring selectively to unlock and lock a piston and cylinder actuator includes at least one lapped axially extending surface substantially conforming to the surface of the cylinder or piston with which it is ...
07/08/1980
4211150Air cylinder
A fluid operated cylinder is provided including a tube having rod end and blind end caps which are attached to the tube by radial plugs. The plugs permit relative movement between the rod end cap and the tube when the cylinder is operated to accommodate a...
07/08/1980
4211151Jam proof piston
An improved jam-proof control including a cylinder-piston assembly in which the piston is controllably positioned within the cylinder to perform the control function and in which the piston rod which extends through the cylinder wall is enveloped by a def...
07/08/1980
4211152Power steering motor seal
An improved power steering motor seal performs three functions. The seal engages a tubular motor cylinder wall to prevent leakage of fluid between the wall and a housing. The seal also engages a rack bar to prevent fluid leakage between the rack bar and t...
07/08/1980
4211153Carton erecting apparatus
The cartoner utilizes a rotary feeder to pick-up a carton blank on a dead stop from a hopper; to break the carton on itself on a breaking plate during movement in an arcuate path from the hopper; and to deposit the blank on a dead stop on a conveyor. The ...
07/08/1980
4211154Apparatus for improving the collection of gases into a suction orifice
Gases such as contaminated exhaust or stale air are induced toward a suction orifice by means of an air nozzle spaced from the orifice and pointing generally in the direction thereof to generate a Venturi effect on the gases at considerable distances from...
07/08/1980
4211155Laboratory hood
A laboratory hood has a housing that is horizontally elongated and that is provided with an exhaust that withdraws gas from inside the housing through the back wall thereof. A horizontally elongated diffuser chamber of the same length as the housing is su...
07/08/1980
4211156Apparatus for making a coffee beverage
The invention provides an apparatus for enclosing a filter bag, filled with a portion of coffee powder and provided with at least one moving wall and a handle for producing a pump-like action driving a current of water transversely through the filter bag....
07/08/1980
4211157Coffee maker
A coffee maker includes a housing provided with a hinged cover at its top. An arcuate flange adjacent the hinge side of the cover extends downwardly from the inner surface of the cover in the closed position of the cover; and a flange extends radially inw...
07/08/1980
4211158Holding device
A device for holding food articles that are impaled on sticks. The device includes a body member having first and second transverse grooves thereacross. The second transverse groove is positioned within the first transverse groove. A spring clip is positi...
07/08/1980
4211159Portable barbecue grill
A portable barbecue grill apparatus has a unitary frame with an integral handle and removable legs. The heat sources are arranged vertically with the meat placed on two rotating spits, also vertically arranged. The spits are suspended from the frame and a...
07/08/1980
4211160Method and apparatus for internally seasoning meat prior to cooking
A method and apparatus for inserting solid spices and liquid spices into the interior of meat for seasoning prior to cooking. The apparatus are disclosed comprises a reservoir for holding the spices, a tapered meat-piercing rod inserted into the interior ...
07/08/1980
4211161Machine tools and machine for removing stem from vegetable, such as cabbage or cauliflower
There is described a stump removing tool particularly designed for separating cauliflower flowerets from the stump thereof. It may also be useful for coring cabbages. The tool comprises a cylinder having an upper cutting edge and a nose piece, the apex of...
07/08/1980
4211162Process for the batch filtering of suspensions
For the batch filtration of suspensions by application of external pressure, after the pressing of the suspension in the press-chamber space and before entrance of the resultant press cake into at least one subsequent press-chamber space the structure of ...
07/08/1980
4211163Apparatus for discharge of pressure cooked particulate or fibrous material
Particulate or fibrous material, after treatment with gaseous reagents in a vessel under pressure in a continuous process, is discharged from the pressure vessel by entering a discharge conduit in pressure communication with the pressure vessel, and is co...
07/08/1980
4211164Rotary drum-type collecting vessel with a raking and pressing screw
A rotary drum-type collecting vessel for receiving and transporting refuse or other bulk material, comprises, a hollow rotary collecting drum having an inside wall, and includes an opening at one end which is covered by a cover plate which covers the open...
07/08/1980
4211165Apparatus for the compressive handling of a strip of material
Apparatus for the compressive handling of a strip of material, especially for handling paper strip in a paper machine, includes a plurality of cooperating horizontal and vertical roller pairs arranged in ascending and/or descending step-like succession an...
07/08/1980
4211166Print band one edge guide
A plurality of print hammers disposed along a print station are caused to be swung against a print band and there is provided a top edge guide to limit upward movement of the band and maintain the print band in a precise path in its travel past the print ...
07/08/1980
4211167Inking device for printing with greasy ink
The present invention relates to an inking device for printing with greasy ink, said device being characterized in that it comprises, downstream of the zone of contact of the inking roller and the plate or photogravure cylinder, a second rod parallel to t...
07/08/1980
4211168Fin-stabilized practice missile
There is disclosed a fin-stabilized unarmed missile for impact diagram target shooting. The missile has an essentially cylindrical body to the rearwardly tapered rear end of which there is affixed a winged tail unit. The missile body has a transverse fron...
07/08/1980
4211169Sub projectile or flechette launch system
An explosive flechette launching system which includes a central core expive driver having stacked coaxially thereabout a plurality of disc plates which have layered and sandwiched therebetween for radial launching a multiplicity of flechettes. In one em...
07/08/1980
4211170Mobile apparatus for the continuous replacement of an old track by a new track
A mobile train assembly of track-bound freight and work cars for the continuous replacement of an old track by a new track, which comprises a main work car carrying track replacement equipment on a carrier frame supported on two undercarriages and extendi...
07/08/1980
4211171Station for suspended track-type railway
A suspended railway has a fixed tower spaced horizontally from a fixed station. A suspension cable is slung between this tower and the station and a plurality of horizontally spaced upright hangers depending from this cable support a suspended section of ...
07/08/1980
4211172Apparatus for connecting tow carts to a conveyor
An apparatus for transmitting force between a tow cart and an in-floor conveyor that includes a pin that pivots out of engagement with the conveyor when the cart meets an obstruction. The motion of the pin when disengaging from the conveyor places another...
07/08/1980
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