Abstract: A fast warm up, die-drawn, low mass cathode cap is substantially cup-shaped having a closed end and an upstanding side wall integral therewith. The thickness of the side wall is less than that of the closed end, permitting more of the heater energy to be concentrated in the closed end which carries, on the outer surface thereof, the electron emissive material.

Abstract: An improvement is provided in a plural beam cathode ray tube electron gun assembly wherein positive positioning and embedment of the heater support means is achieved. One of a plurality of heater support means is oriented in each of a plurality of longitudinal rods supporting the gun assembly, in the area intervening between the embedded termini of two adjacently positioned cathode assembly support means positioned in side-by-side relationship. During gun assembly fabrication, localized movement of the softened glass of the rod, is restricted between the termini thereby effecting improved embedment of the heater support therebetween.

Abstract: An improvement in the means for supporting individually shielded cathodes is provided in a plural beam cathode ray tube electron generating assembly incorporating an in-line electron gun arrangement integrated by four spaced-apart longitudinal insulative rod-like supporting members. Each of the individual all-metal cathode assemblies is separately supported in a spatial manner apart from the related cup-like control electrode wherein a portion of the respective cathode assembly is oriented. The three cathode positioning members have discretely formed extremital portions embedded in the longitudinal supporting member to provide improved shielding and enhanced structural end-support for the in-line gun assembly.

Abstract: Load engaging and gripping apparatus for attachment to the lifting mechanism of a conventional lift truck for handling loads which are crushable and yet may be compressed slightly without damage thereto. The apparatus comprises a lift assembly adapted for mounting on a lift mechanism of a lift truck with opposed carrier plates affixed to opposite ends of the lift assembly. The carrier plates on their confronting faces slidably mount load engaging and gripping platens whereby when the opposed platens are in contact with the load under light frictional engagement and the lift assembly is moved vertically upward, the platens will be moved inwardly toward each other to frictionally and firmly grip the load therebetween for lift purposes.

Abstract: Load engaging and gripping apparatus for attachment to the lifting mechanism of a conventional lift truck for handling loads which are crushable and yet may be compressed slightly without damage thereto. The apparatus comprises a clamping assembly adapted for mounting on a lift mechanism of a lift truck with opposed load engaging and gripping platens forwardly thereof. Link members connect the platens to the lift assembly whereby when the opposed platens are in contact with the load under at rest condition and the lift assembly is then moved vertically upward said platens will be moved inwardly toward each other to frictionally and firmly grip the load therebetween for lift purposes.

Abstract: An active hybrid circuit for providing isolation between a signal receiving line and a signal transmitting line coupled to a two-wire telephone subset. The receiving line is coupled to a receiving amplifier having a differential output coupled to a pair of common terminals. The telephone subset is also connected to the two common terminals. The two common terminals are connected to the two inputs of a transmitting operational amplifier. The transmitting signal line is coupled to the output of the transmitting amplifier. A compensating network is connected between the input to the receiving amplifier and one of the inputs to the transmitting amplifier.

Abstract: In a television receiver having a chrominance signal channel coupled to a cathode ray tube, an automatic peak color control circuit includes an envelope detector means providing a combined chroma envelope and DC potential, a means for shifting the level of the combined chroma envelope and DC potential, a means for detecting the peak level of the chroma signal, and a means for comparing the detected peak chroma signal level and a reference potential level to provide a control signal for maintaining application of a substantially constant level of chroma signal to the cathode ray tube.

Abstract: An internal improvement is provided in a cathode ray tube wherein the electron gun assembly is positioned in close proximity to the sidewall of the encompassing neck portion of the tube envelope. The improvement is in the form of discrete shielding means incorporated in conjunction with one or more electrodes in the forward portion of a multi-beam electron gun assembly to minimize the effect of positive neck charge on the trajectories of the electron beams traversing the portions of the assembly closely related to the neck wall. Each shielding means is comprised of an element formed of substantially round wire material configurated as a U-shaped member, whereof the bottom bridge-portion of the member is substantially contiguous with the rolled rim of the associated electrode, extending outward therefrom toward but not touching the adjacent glass wall of the neck.

Abstract: Improved means are provided for supporting a container of effusive material within a cathode ray tube wherein the container is located at the terminal end of a resilient longitudinal positioning member attached to the electron gun assembly. The supportive means includes at least one support placement means which projects forwardly from the container as a directional continuation of the positioning member. Associated with the support placement means is a rotatable member, the peripheral surface of which tracks in a direction common with the directional trend of the positioning member. The rotatable member, which may be formed of insulative material, effects facile positioning with a minimum of abrasion and positive spatial supportive placement of the container relative to the wall of the envelope.

Abstract: Two or more self-adjusting electrical conductive snubber means are employed in an electron beam device to effect concentricity of the electron gun structure within an encompassing portion of the envelope. Each of the snubbers is a longitudinal resilient metallic member fabricated of flat material and formed for placement on an electrode of the gun structure in an orientation normal to the axis thereof. The central portion of each snubber is an attachment area having like transition portions formed at each end thereof, wherefrom similar resilient lever arms extend in an opposed longitudinal manner, each having a contact element terminally formed thereon. In usage, each of the lever arms is flexed from a relaxed to a compressed position within the envelope in a manner tangential to the positioning electrode to provide an accommodating fulcrum therewith.

Abstract: Spark gap apparatus is provided wherein a wafer of electrical conducting material is affixed to a wafer of electrical insulating material and spaced from a circular array of circular pins of an electron discharge device to provide a spark gap intermediate the wafer of electrical conducting material and certain ones of the circular pins of the electron discharge device.

Abstract: A very stable voltage reference potential is provided by circuitry wherein an avalanche device provides an output voltage which is, in turn, applied to a voltage to current converter to provide a current for the avalanche device which is dependent upon the output voltage rather than the voltage of the avalanche device.

Abstract: A power amplifier and loudspeaker protection circuit for a receiver having an AC potential source with a center-tap transformer shunted by a full-wave bridge rectifier and a power amplifier directly coupled to a loudspeaker connected to a potential reference level includes a thermal relay means coupling the bridge rectifier through normally closed contacts to a power amplifier stage and an impedance coupling the transformer center-tap to a potential reference level to activate the thermal relay means and disconnect the potential source in response to increased current flow in a loudspeaker.

Abstract: A remote control receiver for a television receiver remote control system having a memory capacitor and a field-effect transistor readout to provide a direct control voltage is shown. Circuit means illustrated as a diode connected in series with the memory capacitor limits the magnitude of the charge stored by the memory capacitor to prevent the field-effect transistor from being driven beyond cut-off by an excessive amount.

Abstract: An improvement combination is provided in cathode ray tube construction for expediting improved tube processing and subsequent tube operation. The combination is incorporated in the funnel portion of the tube wherein a first low resistive electrical conductive coating is interiorly disposed in a substantially circumferential manner on the forward portion of the funnel nearest the screen. A high resistive electrical conductive coating is substantially circumferentially interiorly disposed on substantially the intermediate portion of the funnel being contiguous with the first coating, and making contact with a second low resistive electrical conductive coating interiorly disposed on substantially the rear portion of the funnel. This second coating extends into the forward region of the integral neck portion to facilitate electrical connection with the electron gun assembly positioned therein.

Abstract: In a signal receiver having a potential source and an amplifier stage connected to a loudspeaker, a loudspeaker and amplifier protection circuit includes a normally closed switch coupling the potential source to the amplifier stage and a protection circuit coupled to the output of the amplifier stage and responsive to positive or negative polarity DC potentials for activating the switch to disconnect the power supply from the amplifier stage.

Abstract: An improved internal support is incorporated in a multipack container for accommodating a plurality of cathode ray tubes during transportation and storage. The multipack construction includes top and bottom rigid closure members formed of plastic material in conjunction with peripherally oriented and edge positioned support. The internal supportive construction of the invention is oriented within the multipack in a manner to effect vertical support between the closure members. This improved support is formed from a unitary sheet of rigid material having predefined folding-scores therein, which when folded, provide individual protective compartments for two cathode ray tubes. The unitary construction of this internal supportive along with the multiple folds of the integration, provide improved structural rigidity and enhanced protective characteristics.

Abstract: The invention provides radiant energy emission means utilized in an apparatus for discretely photo-exposing sensitized coatings disposed on the sidewall portion of a color cathode ray tube glass face panel. The emission means includes a source of radiant energy and an associated transparent energy transmission medium in the form of a cylindrical collector rod positioned in a manner whereof the output portion thereof extends within the panel. The cylindrical surface of the output portion within the panel is abraded to laterally emit exposure radiation radially outward toward the sidewall of the panel.

Abstract: The invention provides a process improvement and conjunctive apparatus for facilitating the fabrication of the basic patterned windowed-web portion of a color cathode ray tube screen structure formed in the viewing area of the face panel. In accordance with the invention, additional photo-exposure of the panel is discretely effected to polymerize a defined band of coating confined to the sidewall portion of the panel. The presence of this band subsequently facilitates expeditious removal of extraneous graphite coating from the panel sidewall, from the mask positioning studs embedded therein, and from the terminal sealing edge therearound. Thus, the invention provides desirably bare sidewall-associated surfaces that are free of deleterious particulate matter.

Abstract: A wide band automatic frequency control (AFC) system is shown wherein the presence or absence of a video signal in the video channel is detected by determining whether synchronizing pulses are present and modifying the error voltage from the AFC amplifier in the absence of detected synchronizing pulses. Additionally, a voltage combining network comprising three series connected resistors for combining a tuning voltage with the error signal from the error amplifier for application to UHF and/or VHF tuners with varactor diodes is shown.