Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 4163140 | Plant and a process for sintering ceramic products The invention relates to a plant for sintering or melting ceramic or refractory products in a wave-guide or a sounding cavity wherein they are subjected to the action of a microwave field, a plant wherein the temperature of the product to be processed is ... | 07/31/1979 |
| 4127024 | Battery voltage regulating and condition indicating circuit for measuring instruments A voltage regulating circuit is provided for low voltage battery-powered measuring instruments of the type using electrically-heated filaments as sensing elements. The circuit includes an indicating signal light which is energized from a separate control ... | 11/28/1978 |
| 4124480 | Bipolar cell A bipolar cell comprising a plurality of spaced electrode plates defining a sinuous flow path therethrough, wherein the flow path sweeps out the entire space between adjacent plates so as substantially to prevent the formation of stagnant areas and thus m... | 11/07/1978 |
| 4121071 | Electric switch A switch housing having a separate base attached to one end includes an electric end contact secured to each end of the base inside the housing, and central electric terminal means secured to the central part of the base between the end contacts. An elong... | 10/17/1978 |
| 4109667 | Hair setting roller A hair setting roller includes a dielectric cylinder encircled by an electrical resistance magnetic heating element secured to it and adapted to be attracted by a permanent magnet mounted in apparatus having a pair of laterally spaced electric supply cont... | 08/29/1978 |
| 4106127 | Energy absorbing suspension element A suspension element for suspending a load and absorbing energy if the load is increased suddenly above a predetermined minimum includes a normally rigid ring that is permanently deformable under an applied load above said minimum. Diametrically opposite ... | 08/15/1978 |
| 4103529 | Extrusion press for direct and indirect extruding with die shifter A gate lock housing mounted against the rear face of the front platen of an extrusion press has a passage through it aligned with a passage through the platen. A tubular block is normally disposed in the housing passage where it is held by releasable gate... | 08/01/1978 |
| 4102960 | Process for making high strength flexible graphite foil Finely-divided graphite flake is heated to a high temperature in the presence of boron or a boron-containing compound to cause the boron to permeate the crystal structure of the flake, which is then subjected to an intercalating agent and rapidly heated, ... | 07/25/1978 |
| 4100386 | Process for sintering ceramic products A ceramic or refractory product is placed in a sounding cavity close to but spaced from an opposing member and they are heated to a predetermined temperature to sinter or melt said product by subjecting them to the action of a hyperfrequential electromagn... | 07/11/1978 |
| 4099753 | Automatic locking mechanism for one of a pair of hinged doors A lock housing is adapted to be mounted at the free vertical edge of the inactive one of a pair of hinged doors that have adjacent vertical edges when both doors are closed. Slidably mounted in the housing is an axially movable shaft that extends vertical... | 07/11/1978 |
| 4098468 | Reeling device for cables A cable reeling device for winding cable upon a flanged reel comprising support means slidable along vertical side-frames and supporting a spindle, the support means being interconnected by means of an extendable shaft, in which each support means compris... | 07/04/1978 |
| 4094051 | Method of making sheaves A series of adjoining concentric rings are cut from a metal plate. The same number of hubs, all the same shape, are also cut from plate material as are annular web plates to fit around hubs, but the outer diameters of the web plates are different from one... | 06/13/1978 |
| 4091969 | Container filling machine with adjustable dispensing cylinder The upper edge of a cup-shape flexible diaphragm in the lower part of a vertical dispensing cylinder is sealed to the side of the cylinder, with the bottom of the diaphragm engageable with the bottom of the cylinder around an inlet and outlet port to clos... | 05/30/1978 |
| 4090511 | Mouthpiece valve for escape breathing apparatus A valve housing has a mouth port in one side and a vent opening in its opposite side, with another opening between them for connection to a carbon dioxide removing and oxygen generating canister. Around the mouth port inside the housing is a valve seat, t... | 05/23/1978 |
| 4088461 | Combination of a supplementary filter and respirator filter A supplementary filter housing is provided in one side with an opening for receiving the inlet end of a respirator filter attached to a facepiece. Inside this housing there is a perforated partition between the filter-receiving opening and a portion of th... | 05/09/1978 |
| 4087309 | Apparatus for sealing lap joints of fusible roofing sheets A burner that has flat upper and lower walls connected by side walls and a front end wall is provided with a fuel inlet for connection to a fuel source and with an open rear end. A device is connected to one side of the burner for inserting it between the... | 05/02/1978 |
| 4084301 | Trolley rail assembly Apparatus is supported by one end of a line of rails for feeding metal bars from a coil lengthwise into parallel longitudinal slots in the rails to form continuous straight electrical conductors. The feeding apparatus includes a plurality of staggered str... | 04/18/1978 |
| 4083446 | Combination card holder and decorative element An open-top card-receiving sheath adapted to be inserted in the breast pocket of a man's jacket is detachably connected to a substantially rectangular fabric member in front of it that is at least as wide as the sheath. The appearance of the front of the ... | 04/11/1978 |
| 4080904 | Railway car positioning apparatus A pair of laterally spaced wheel chocks are each normally connected in a gap in a railroad track rail, with each chock having a straight upper surface over which car wheels can roll in crossing the gap. Pivotally connected on a horizontal axis to each cho... | 03/28/1978 |
| 4077268 | Garage door operator A long horizontal tubular housing for a garage door operating screw is provided in its bottom with a slot extending lengthwise of the housing. Inside the housing there is a metal tube that is several feet long and that can be rotated by reversible means a... | 03/07/1978 |
| 4068598 | Element of vehicle running on railway tracks The invention relates to an element of a vehicle which is part of a continuously moving train of similar vehicles, the element consisting, on the one hand, of two axles carrying wheels with solid tires and inner tubes and, on the other, of an on-board shu... | 01/17/1978 |
| 4068450 | Container capping machine In a container capping machine a continuously moving horizontal conveyor is spaced below a vertically reciprocable rotary chuck for holding a screw cap in its lower end. Extending along one side of the conveyor is a continuously rotating horizontal positi... | 01/17/1978 |
| 4064678 | Apparatus for drawing a side-folded tube over piled objects Apparatus for drawing side folded tube over objects piled on a base, the apparatus being provided with a welding and separating device and an opening device for opening and drawing over the tube fed in flatly pressed form. The opening device is in the for... | 12/27/1977 |
| 4064653 | Sliding window A pair of sliding window sashes have overlapping ends, each of which includes a vertical sash rail to which a vertical metal bar is joined between the rail and the other sash. Each bar has a pair of vertical slots in it separated by a vertical flange and ... | 12/27/1977 |
| 4062563 | Ski binding On a support for attachment to a ski there is at least one ski-boot clamp that is movable from a boot-clamping to a boot-releasing position. A leaf spring has one end disposed in the clamp while means on the support hold the other end of the spring. The s... | 12/13/1977 |
| 4059776 | Electric motor brush mounting An electric motor frame has a brush-receiving recess beside the commutator. The recess has top and bottom walls and an insulating brush housing is disposed in the recess where it is held in fixed position. Slidable lengthwise in the housing is a brush, be... | 11/22/1977 |
| 4057702 | Process and plant for the fritting of ceramic products This invention relates to the fritting of ceramic products, in particular ceramic products of small or of very small dimensions, for example those intended for use in the electronics industry. A process for fritting ceramic products wherein the products to be ... | 11/08/1977 |
| 4052922 | Hydraulically-actuated cable cutter A cable cutting member is adapted to be driven forward in a cable holder to cut a cable therein. For driving the cutting member, an explosive charge is detonated by a spring pressed firing pin slidably mounted in the holder behind the charge. A firing pin... | 10/11/1977 |
| 4053051 | Earplug package and method of making it Extending into the open end of a cylindrical container is the stem of an earplug inserter that has an enlarged portion outside of the container forming a shoulder spaced from the open end of the container. Enclosing the stem between it and the encircling ... | 10/11/1977 |
| 4050281 | Extrusion press with multipurpose side cylinders A stationary main cylinder, spaced behind a billet-receiving container located behind an extrusion die, contains a ram projecting from the front end of the cylinder. Piercer cylinders are mounted on the opposite sides of the main cylinder and have open fr... | 09/27/1977 |
| 4050115 | Door hinge One of a pair of hinge leaves has an integral open outer loop extending along one edge and the other leaf has an integral inner loop extending along one edge and disposed inside the outer loop. The inner loop is mounted on a hinge pin extending through it... | 09/27/1977 |
| 4050555 | Trolley rail assembly An extruded plastic housing of indefinite length contains an electrical conductor bar in a slot extending lengthwise of the housing. The bar is retained in the slot by a pair of ribs integral with the side walls of the slot and extending lengthwise thereo... | 09/27/1977 |
| 4049570 | Method and apparatus for removing vapors and aerosols from gases produced in a gasification plant The high temperature gasification of solid fuel or mixtures of solid and liquid fuels is carried out by a method and apparatus wherein the gasified product from a high temperature gasification chamber having a slag bath therein is fed into a first dust co... | 09/20/1977 |
| 4049394 | Control system for a coal gasification plant A control system maintains a predetermined volumetric ratio between fine-particle fuel and a gasification agent which are fed separately into a reactor wherein the fuel is gasified under pressure. The control system includes a first measuring means respon... | 09/20/1977 |
| 4046634 | Assay of isoenzymes by ion exchange chromatography A simple, rapid anion-exchange column chromatographic technique is used to determine the presence of fractions of proteins and enzymes in human serum by separating the fractions on the basis of their net electrical charges. Samples of serum of unaltered i... | 09/06/1977 |
| 4046641 | Process and apparatus for the separation of crude benzol and naphthalene from washing oil A process and apparatus for the regeneration of washing oil which has been spent to recover naphthalene and/or benzol from coke oven gas. The spent washing oil is stripped by steam in a bubble column arranged as an integral part of a single main column th... | 09/06/1977 |
| 4045299 | Smokeless non-recovery type coke oven A burner for oil or gas is controlled by a thermocouple to maintain a predetermined minimum operating temperature within ignition chambers employed to incinerate partially-burned distillation products conducted from the space above a coal charge in a coke... | 08/30/1977 |
| 4043766 | Slag bath generator Nozzles introduce jet streams of fine-grain fuel and a gasification medium downwardly toward the surface of a slag bath at the bottom of a cylindrical reactor shaft within a vessel to impinge upon the surface of liquid slag which is discharged through a c... | 08/23/1977 |
| 4042795 | Slide switch contact having plural flexible slats providing make before break contact engagement In an electric switch a slide containing a shorting contact is movable back and forth along a row of at least three fixed electric contacts. The shorting contact is formed from a spring metal strip having an elongated central body between a pair of end po... | 08/16/1977 |
| 4042078 | Railway car brake rigging fulcrum lever mounting The upper end of a railway car live brake lever between the axles of a car truck is pivotally connected to one end of a link that extends across the top of the adjacent axle and is pivotally connected to the lower end of a vertical fulcrum lever. The cent... | 08/16/1977 |
