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"Transmission of documents via telephone wires is possible in principle, but the apparatus required is so expensive that it will never become a practical proposition."
Dennis Gabor, British physicist
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| Number | Title | Issue Date |
| 4323127 | Electrically operated impact tool One or both of a pair of oppositely rotating bodies, such as motor driven flywheels, are mounted for pivotal movement against the side of a ram. One or more tension rods connect pivot shafts or members for equalizing precession and similar forces of rotat... | 04/06/1982 |
| 4295760 | Rock bolt anchor A series of adjoining cam discs are mounted on a foot having an inclined surface, with the cams surrounding a stem connecting the foot and a head of a diameter to fit within a borehole in rock. The stem extends axially between the head and the foot, while... | 10/20/1981 |
| 4291621 | Adaptable stencil for different mimeograph machines A mimeograph stencil having a plurality of headers secured together by perforated lines permitting removal of the portion not required by the mimeograph duplicating machine.... | 09/29/1981 |
| 4290712 | Plastic post apparatus and methods A post made of one piece of molded polymeric material having a vertically upwardly extending elongated post means portion for supporting apparatus mounted thereon; a driving head means portion connected to and mounted below the lower end of the post means... | 09/22/1981 |
| 4286929 | Dual pressure gas motor, and method of operation A cylindrical shell with a double acting piston, having a high pressure area and a low pressure area on each side thereof, is provided with a valve for alternately injecting high pressure gas to each small area to provide an initial piston drive, and valv... | 09/01/1981 |
| 4285390 | Method of and apparatus for supplying treated air to spaces having different cooling requirements Fresh, outside air may be supplied to a first space, such as a dining area of a restaurant or the like, while air from the first space may be recirculated through an air conditioning unit for cooling or heating the air, which is returned to the first spac... | 08/25/1981 |
| 4282044 | Method of recycling aluminum scrap into sheet material for aluminum containers A composition and method whereby aluminum scrap, including consumer scrap, is recycled into aluminum sheet and aluminum containers. Aluminum scrap is melted in a heated furnace to form a melt composition. The melt is adjusted to form the present compositi... | 08/04/1981 |
| 4278478 | Method of stack cutting A stack of edge aligned, thin metal sheets pressed into tight face-to-face engagement between rigid upper and lower plates, and a series of closely spaced peripheral welds from upper to lower plates secures the stack together for torch cutting predetermin... | 07/14/1981 |
| 4274456 | Apparatus for dispensing fluid sealant An apparatus for accurately dispensing predetermined amounts of fluid sealant onto can ends which comprises a dispenser arm mounted at one end for horizontal and vertical arcuate movement, a clamp for releasably holding the arm in one operative position, ... | 06/23/1981 |
| 4275097 | Protective coating for cans and methods for application of coating thereto Apparatus and methods of applying a thin narrow width coating to can body members comprising a feed control means associated with a guideway means for causing rotating moving of the can body members across an elongated coating applicator roller member ext... | 06/23/1981 |
| 4269632 | Fabrication of aluminum alloy sheet from scrap aluminum for container components A composition and method whereby aluminum scrap, including consumer scrap, is recycled and fabricated into aluminum sheet and aluminum containers. Aluminum scrap is melted in a heated furnace to form a melt composition. The melt is adjusted to form the pr... | 05/26/1981 |
| 4267771 | Self-aligning mandrel for can printing machines A can printing machine of the type having a rotating assembly of mandrels contacting a rotating printing blanket for transferring decoration from the blanket to cans on the mandrels is provided with mandrel assemblies which are axially alignable with the ... | 05/19/1981 |
| 4268012 | Adjustable length strap tie down apparatus Apparatus for holding a first object or objects in a fixed position relative to a second object comprising an elongated continuous length strap for engaging and holding the first object; strap attachment apparatus connected to opposite ends of the strap f... | 05/19/1981 |
| 4266676 | Apparatus for separation of material of heterogeneous character A separator for material which includes components of different specific gravities and sizes, includes a series of spaced, parallel shafts disposed in essentially the same plane, which may be tilted upwardly. A series of non-circular discs, such as ellipt... | 05/12/1981 |
| 4265170 | Solenoid actuated container crusher A one at a time can crusher, specifically for recycling aluminum cans, includes an aligning and separating feed chute for cans leading to an end-to-end crusher, and a contact arrangement for detecting the type of can, actuates a solenoid crusher. The unit... | 05/05/1981 |
| 4262285 | Personal alarm A personal alarm device which provides for both intermittent actuation of a personal alarm as well as irreversible actuation of such alarm by the provision of multiple actuation modes including a positive displacement device which is lever and spring cont... | 04/14/1981 |
| 4261493 | Carrying and locking strap for skis and poles An elongated strap, having metal threads to deter cutting, includes a non-removable ring at one end and a combination lock secured to the other end, for providing an over the shoulder carrier for skis and poles, and a wrap-around lock for securing skis an... | 04/14/1981 |
| 4254173 | Composite material for secondary container packaging A secondary container packaging material for use in six pack can wraps, six pack bottle carriers, twelve pack carriers, etc., comprising a composite of a paper material laminated to a plastic film. The plastic film provides tear resistance to the composit... | 03/03/1981 |
| 4253661 | Leg exercising device Thick, resilient, flexible pad with a sloped top surface and sloped sides provides for safe, non-jarring leg exercises involving running, squatting, squat-running, leg joint pivoting, balance and the like.... | 03/03/1981 |
| 4251889 | Swimming pool cover A swimming pool cover consisting of a sheet of transparent, flexible, pliant plastic of a size to cover the water surface of a pool with an overhang of a several inches permitting folding back all edges, a foamed plastic cylinder in the fold around the po... | 02/24/1981 |
| 4250577 | Face mask for use with goggles A face mask shaped for the lower face below eye covering goggles includes a central attachment for securing to the nose piece of the goggles, and side holders for securing to the sides of the goggles, and a verturi nose covering on the mask to draw exhale... | 02/17/1981 |
| 4249686 | Gun sling A quick release sling for fast shouldering and firing of shoulder-held small arms, having an adjustable size loop of a strap, which loop may be passed over the shoulder and torso of a user for weapon carrying across the user's chest with the adjustable lo... | 02/10/1981 |
| 4245946 | Apparatus for removing bags from stacked can ends Apparatus for separating a wrapper from articles contained therein and especially applicable to the manufacture of cans wherein the can ends are formed at one location and transferred in bags of stacked ends to another location where the bags are removed ... | 01/20/1981 |
| 4243970 | Open circuit alarm A timing circuit for sounding an alarm for left-on main power switches, particularly in aircraft, includes a detector circuit for a secondary circuit of a complete circuit, a clock circuit controlled by the main power switch and an audioalarm circuit acti... | 01/06/1981 |
| 4243029 | Apparatus for automatic ventilation of the lungs using dual potentiometers to vary the power to an electric motor to control the inhalation/exhalation ratio A piston type air pump, for forced lung ventilation, with a variable length of stroke and a variable timing of inspiratory and expiratory phases. The pump includes a stepless change, variable radius crank arm, controllable during pump operation for changi... | 01/06/1981 |
| 4242928 | Filing aid An elongated rigid tool having a handle at one end and a file contactor at the opposite end, having a total length greater than the width of the files to be manipulated and thickness permitting easy entry between tightly bunched files and manipulation of ... | 01/06/1981 |
| 4240434 | Peritoneo-venous shunt A peritoneo-venous shunt for the surgical management of ascites includes a perforated inlet catheter with an asymetrical, one-way valve attached to and contained within a pump body, a venous catheter and a plurality of x-ray absorbing markers placed along... | 12/23/1980 |
| 4232884 | Lightweight trailer bed construction A framework structure including longerons and lateral ribs formed of relatively thin plate metal having bent-over long edges forming channels or Z-sections riveted and welded together forming a lattice type framework, as a supporting frame for a lightweig... | 11/11/1980 |
| 4231126 | Water bed wave generator A pad mounted for resting on the top surface of a water bed reciprocates vertically to displace water forming waves in the water of the water bed, for relaxing a user. The speed, amplitude and time of operation of the pad is variable to the desires of the... | 11/04/1980 |
| 4230476 | Apparatus and method for obtaining uniform gobs in a triple gob feeder An apparatus and method for use in a triple gob feeder of a glass forming apparatus for forming molten glass gobs of uniform size, weight, volume and shape by equalizing the temperatures of the molten glass flowing through orifices in a triple gob orifice... | 10/28/1980 |
| 4230412 | Matrix print head assembly A wire matrix print head assembly having a plurality of circumferentially spaced armature members in which each armature member is operatively associated with a pair of radially spaced magnetic pole members and a coil associated therewith, each armature m... | 10/28/1980 |
| 4230038 | Matrix print head assembly A wire matrix print head assembly in which armatures are mounted between pairs of magnetic pole members and wire printing members with coplanar radially spaced pole member end surfaces facing the direction of movement of the armatures and the wire printin... | 10/28/1980 |
| 4229006 | Maze puzzle A gameboard, having a recessed playing area, with a series of pivoted shapes, each being a portion of a geometrical shape, secured in spaced relation in the recessed area, and a freely movable, mating piece for each geometrical shape, provides a maze havi... | 10/21/1980 |
| 4225983 | Prosthetic terminal device A voluntary closing prehensile prosthetic hand of laminated construction having a natural reaching and positive gripping action, innate biofeedback characteristics, and greater gripping strength and utility. The thumb member is a cable actuated, rotatable... | 10/07/1980 |
| 4223664 | Concentrating solar heat collector A heat storage unit is integrated with a collection unit providing a heat supply in off-sun times, and includes movable insulation means arranged to provide insulation during off-sun times for the heat storage unit.... | 09/23/1980 |
| 4222458 | Basement emergency exit A folding stairway interconnected with a basement window and its lock, for unlocking the window and opening the window when the stairs are pivoted from a closed or folded position to a down, usable position.... | 09/16/1980 |
| 4222479 | Container conveying and transfer system A container conveying and transfer system for conveying and transferring decorated containers from a continuously rotatable mandrel wheel of container decorating apparatus to a continuously moving continuous loop container conveying belt member having con... | 09/16/1980 |
| 4221638 | Fluid-solid contact vessel having fluid distributors therein Rectangularly-shaped fluid distributors for large diameter, vertical vessels include reinforcers for high heat operation, vertical sides with gas distributing orifices and overhanging, sloped roofs. Devices are provided for cleaning the orifices from a bu... | 09/09/1980 |
| 4217807 | Stemware musical instrument Stemware of goblets secured in adjoining positions on a mounting board in vertical and horizontal rows, with adjacent goblets rim rubable by one hand, with the goblets in the horizontal rows arranged in tones for basic chords; for example, a first row in ... | 08/19/1980 |
| 4215949 | Self contained asphalt patching apparatus A motorized, wheeled vehicle having a lowerable asphalt supply hopper, includes a small supply asphalt bucket, with a positive discharge, mounted on an articulated arm, also mounted on the bucket is an adjustable height burner and a tack oil sprayer, and ... | 08/05/1980 |
