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 |
| 4062099 | Method of making a shield for a radiation projector A shield for a radiation piping rod is formed by shrinking a length of plastic resin tubing on a rod or on a mandrel having a portion conforming to a portion of the rod to be shielded. The shrunken tubing is provided with a lengthened slit to permit strip... | 12/13/1977 |
| 4050363 | Air vent cover assembly This Application discloses an air vent cover assembly for a vent opening in an enclosed structure such as a boat cabin compartment. The assembly includes a connecting ring which is attached to the vent opening in the structure, and a detachable air scoop ... | 09/27/1977 |
| 4050722 | Joint for conduit Each section of a conduit with a constant diameter axial passageway has male pipe threads formed on its outer wall surface at one end. A coupling sleeve is retained captively on the other end of the conduit section by a resilient lock ring means positione... | 09/27/1977 |
| 4043452 | C-ring holder A miniature electrical connector comprising an insulative body having spaced, parallel connector pins extending therethrough and held in place by a combination of abutment surfaces on the pins and block, and C-rings on the pins. In assembling the connecto... | 08/23/1977 |
| 4040359 | Discarding frangible rotating band A composite plastic-glass frangible rotating band, for a spin launched prctile, has epoxy filled annular stress risers embedded within its inner wall. The composite rotating band is designed to be resistant to compressive forces exerted thereon while in ... | 08/09/1977 |
| 4034553 | Stem detent arrangement for wristwatch A three position detent arrangement for facilitating axial positioning of the rotatable stem of a wristwatch in order to enable the wearer to locate the proper axial position. Frusto-conical surfaces of selectively different included angles are employed t... | 07/12/1977 |
| 4031774 | Molded member for use in winding mechanisms A crank is attached to a molded plastic member by an axle that serves as a hinge. The member is constructed to be manually deformable sufficiently to allow the axle to be attached to the member. After the axle is secured in position, the member will retur... | 06/28/1977 |
| 4029118 | Tapping apparatus and method A tapping apparatus and method is provided whereby a sleeve having at least one annular groove around the circumference thereof and an outwardly extending flange at one end thereof is, during the cutting of an opening in the wall of a conduit, carried by ... | 06/14/1977 |
| 4019243 | Method for forming a tubular writing pen An improved writing point assembly for stylographic, or tube pens and a method for making such an improved writing point. The writing tube itself may be formed by a deep drawing operation and then secured, in a surrounding relationship, to the front end o... | 04/26/1977 |
| 4017955 | Apparatus for attaching a workpiece to a continuous length of line This invention relates to an automatic apparatus and method for coupling a workpiece to a specified position along a continuous length of line and then cutting the line to a predetermined length. A length of the line is clamped adjacent a leading section ... | 04/19/1977 |
| 4015325 | Method and apparatus for securing inserts to containers A method and apparatus for assembling an apertured insert onto a rim extending from the end of a metal container and surrounding an opening therein is disclosed herein. The method contemplates inserting an expandable support member through the aperture in... | 04/05/1977 |
| 4014619 | Retainer ring and splined member assembly Lanced slots are formed in the root section of each spline of a splined member to receive a snap ring for securing discs or other members in position with respect to the splined member.... | 03/29/1977 |
| 4012827 | Method for molding composite articles A molding apparatus to provide composite plastic articles within the mold is provided. The apparatus includes upper and lower sections which when in a closed position, form a mold cavity divided into two separated chambers by partitions in the upper secti... | 03/22/1977 |
| 4011803 | Range-hood installation device A range-hood installation device for use on canopy-type range-hoods so as to facilitate one-man installation by allowing preliminary juxtaposition of a range-hood against a wall or soffit through the use of two snap-in retaining brackets which hold the ra... | 03/15/1977 |
| 4002516 | Hermetic closure A hermetic closure cap of resilient thermoplastic material constructed so as to be removably securable in an aperture made in a rigid sheet. This cap is retained by a normally non-deformable but laterally retractable part pressing against the edges of the rigi... | 01/11/1977 |
| 3999278 | Method of assembling a wiper blade assembly A method for assembling a wiper blade with a wiper arm wherein the wiper blade consists of a backing strip having keyhole-shaped slots therein and an open aperture at one end of the strip, along with a multifarious wiping element having a plurality of T-s... | 12/28/1976 |
| 3997052 | Method for fabrication of communicative buttons and buttons made thereby A method for fabrication of a relatively low cost display or communicative novelty button in which a consumable restrictor sheet is placed over a vacuum draw type female mold cavity. The restrictor sheet may be of cardboard and be apertured with a diamete... | 12/14/1976 |
| 3979900 | Device for connecting two parts of a clock A device for connecting two parts of a clock in which one part is provided with an opening and the other with a projecting element. There is a resilient region on one side of the opening and a latch projection on the projecting element. The resilient side... | 09/14/1976 |
| 3980555 | Replacable screen with frame The invention relates to a wear-resistant element in the form of a screen or a lining which has protrusions by means of which the element may be replaceably secured to a support frame. The wear-resistant element is moulded in a synthetic plastics material... | 09/14/1976 |
| 3977576 | Spray can and valve construction An improved aerosol container and valve construction. The container employs a mounting member in an opening in one end of the container body to mount the valve mechanism. The mounting member is tightly seated on a rim surrounding the opening, and maintain... | 08/31/1976 |
| 3977072 | Method of manufacturing a magnetic locator A magnetic locator in which flux-gate sensors are mounted in longitudinal notches or grooves at the ends of a tubular support to form an assembly which is inserted into a tubular housing, the sensors being press-fitted into the notches and the tubular sup... | 08/31/1976 |
| 3974558 | Method of installing annular seal for coaxial tubular member This upstroke-cushioning expansible strut consists of a spring-pressed hollow upper inner arm having on its lower end a piston head reciprocable within a roughly cylindrical hollow lower outer arm, the former being pivoted to an automobile rear hatch whil... | 08/17/1976 |
| 3972110 | Method of fence construction A one-piece spring fastener is provided for mounting fencing wire or the like to a channel shaped support. In one embodiment the wire is mounted generally perpendicularly to the support and is free to move along its axis relative to the support. The faste... | 08/03/1976 |
| 3971877 | Removable filters on electronic chassis and method of assembling same Open cell, air permeable filtering material is attached adjacent the air inlet passage of an electronic circuit chassis by means of a fastener including a plurality of extending barbed members which are semiresilient, the barbs of said fasteners attaching... | 07/27/1976 |
| 3968582 | Gaming token and process for fabricating same An improved gaming token and fabrication process therefor wherein an injection molding compound is applied at selected preconfigured locations within and between a pair of aligned, substantially flat annular non-metallic rings. The common interface betwee... | 07/13/1976 |
| 3967352 | Method for making a scroll type housing for a centrifugal blower A method for making a scroll type housing for a centrifugal blower wherein a flat discharge plate is provided with a rectangular discharge opening and a pair of lugs are spaced from each of a first pair of opposing parallel edges of the opening. Narrow up... | 07/06/1976 |
| 3959061 | Apparatus and method for inserting membrane into container lids Apparatus and a method for inserting flexible liners into container lids. The apparatus includes a piston and means for actuating the piston in a reciprocal path. Means are provided for supporting a container lid in a position substantially normal to the ... | 05/25/1976 |
| 3947947 | Conduit making machine, and method of making an article made thereby A machine is provided, for continuously making drainage conduit of two pieces, with various mechanisms for performing forming, punching, joining, sawing and ejecting functions, as material is carried through the machine.... | 04/06/1976 |
| 3943616 | Method of coupling, and fitting for, lined tubing A leak-tight non-contaminative joint, for connecting tin lined copper tubing with a tin lined coupling member, is formed by exposing the tin lining at the tube end and inserting an elastic "O"-ring between the exposed lining and the surrounding coupling, ... | 03/16/1976 |
| 3942247 | Can opener with bag opener attachment A motor driven can opener is provided with a bag opener having a cutting blade with supporting means which cooperates with the can opener housing whereby the cutting blade is retained without the use of screws or other assembly means and is easily removab... | 03/09/1976 |
| 3940845 | Method of manufacturing closure flanges A closure flange molded of synthetic plastic resin has an internally threaded cylindrical neck surrounded at one end by a circumferentially enlarged base. An annular groove is formed on the flange base for retention of a thermoplastic bonding element havi... | 03/02/1976 |
| 3934329 | Method of and apparatus for attaching fasteners for cloth and the like A fastener for cloth and similar materials is secured thereto by means of apparatus which includes an elongated member which is tempered in the form of a coil. Absent restraint the coil will move in a direction which is tangential to the envelope of the c... | 01/27/1976 |
| 3934328 | Process for making a plastic walled device A completely enclosed plastic can or container has a neck-like opening closed by a spring biased cap. The cap is controlled by a handle linkage connected to a vertical fin formed on the can by an enlargement of the flash line between two plastic mold part... | 01/27/1976 |
