Leviton Manufacturing Company, Inc.

Perfect-line Manufacturing Corp.

Stanley S Brenner

George E Johnson

James N Pearse

Charles Chase

Bernard J Gershen

Rickie Wyke

An electric series circuit with plural loads such as light bulbs connected in series and plural solid state switching devices, with each switching device connected in parallel with one of the loads. Each switching device conducts current when the load that it is connected in parallel with does not conduct current because the load is burned out. The solid state switching means may be any device with a breakthrough voltage which is high enough that it does not conduct when all of the loads conduct current normally. When one of the loads is burned out, that load does not conduct current and the entire line voltage appears across the switching means in parallel with the burned out load. The switching means breaks down. Accordingly, the switching means conducts current and current flows to the remaining loads. Accordingly, the remaining light bulbs in a string of light bulbs continue to light. The burned out load may be immediately detected and replaced. The switching means may be a sidac. Alternatively, a combination of an SCR and a zener diode controlling the gate of the SCR are also disclosed as the switching means. A diac may replace the zener diode.

Electric series circuit

A lighting fixture composed of a lampholder which can receive an electrical lamp and supply to it AC power and a body member into which the lampholder can be placed for support and protection. A locking member in the form of a flat, resilient metallic band with end portions bent at an acute angle provides a one-way clutch which permits the lampholder to be placed into the body member but prevents its withdrawal. Channels in the interior wall of the body receive the band ends to prevent rotation of the lampholder. The channels are employed in pairs and a single pair or two pairs at right angles to each other are employed.

Push-in lampholder mounting system

A lampholder mounting system includes a lampholder and a lampholder bracket. The lampholder includes a housing, electrical contacts supported by the housing and electrical conductors interconnected with the housing to the electrical contacts. The housing includes at least one stop-tab slot and at least one bend-tab slot upon an outer surface of the housing. A lampholder bracket includes a mounting plate with a receiving portion for receiving the lampholder. The receiving portion includes at least one upturned bend tab and at least one stop tab for complementing the outer surface of the lampholder housing, wherein the lampholder is snapped into the receiving portion and the at least one bend tab is bent up to lock the lampholder fixedly to the lampholder bracket.

Lampholder mounting system

A heat flow detector is described which measures a predetermined rate of heat flow in its surroundings, the surroundings being in the proximity of a recessed incandescent fixture which is designed to operate safely in the designated environment. Should the operating environment change for the fixture it will be sensed by the heat flow detector. If the operating environment becomes more dangerous so that a fire or other damage may occur the heat flow sensor will turn the incandescent lamp off and on at a slow rate to indicate the changed operating environment. The heat flow detector will cause a slow turn off and on if an oversize lamp is inserted in the incandescent fixture. The heat flow detector will thus prevent an overloaded condition due to an oversize bulb.

Heat flow detector for recessed incandescent fixtures

A heat flow detector is described which measures a predetermined rate of heat flow in its surroundings, the surroundings being in the proximity of a recessed incandescent fixture which is designed to operate safely in the designated environment. Should the operating environment change for the fixture it will be sensed by the heat flow detector. If the operating environment becomes more dangerous so that a fire or other damage may occur the heat flow sensor will turn the incandescent lamp off and on at a slow rate to indicate the changed operating environment. The heat flow detector will cause a slow turn off and on if an oversize lamp is inserted in the incandescent fixture. The heat flow detector will then prevent an overheated condition due to an incorrect bulb.

A heat flow detector is described which measures a predetermined rate of heat flow in its surroundings, the surroundings being in the proximity of a recessed incandescent fixture which is designed to operate safely in the designated environment. Should the operating environment change for the fixture it will be sensed by the heat flow detector. If the operating environment becomes more dangerous so that a fire or other damage may occur the heat flow sensor will turn the incandescent lamp off and on at a slow rate to indicate the changed operating environemnt. The heat flow detector will cause a slow turn off and on if an oversize lamp is inserted in the incandescent fixture. The heat flow detector will thus prevent an overheated condition due to an oversize bulb.

A heat flow detector is described which measures a predetermined rate of heat flow in its surroundings. The surroundings being in the proximity of a recessed incandescent fixture which is designed to operate safely in the designated environment. Should the operating environment change for the fixture it will be sensed by the heat flow detector. If the operating environment becomes more dangerous so that a fire or other damage may occur the heat flow sensor will turn the incandescent lamp off and on at a slow rate to indicate the changed operating environment. The heat flow detector will cause a slow turn off and on if an oversize lamp is inserted in the incandescent fixture. The heat flow detector will then prevent an overheated condition due to an incorrect bulb.

Thermal protector housing

Lockable mount for an electric lamp socket

Combined anti-rotational bracket and snap-in clip

The present invention teaches a lockable lampholder mounting system wherein a housing containing electrical contacts, such as an electrical wiring device of the type exemplified by an incandescent lampholder or socket, is removably mounted upon a preselected panel by means of a novel clip arrangement. The panel is of the type utilized in a fixture, for example. The clip arrangement includes a resilient clip of predetermined shape formed with at least three bearing surfaces for contacting the panel, and preferably a fourth bearing surface against which a locking tab is biased to prevent rotation and relatively upward movement of the wiring device.

Lockable lampholder mounting system

This invention relates to a unitary liner locking and locking washer device that is positioned between the wall mounting fixture and the vertical bracket support for an incandescent lamp. The unitary device includes a ring element having one end having a resilient upwardly disposed finger that is pressed into a biased position between the threaded portions of the fixture and the bracket. The other end of the ring element has a resilient prong having a hooked tip also upwardly disposed. The prong is unbiased with the tip engaged in a slot in the liner to lock the liner in position and can be biased inwardly to free the liner.

Combined liner locking and locking washer system for mounting an

Thermal detector

A wire connector. A body member has a lower hollow internally threaded portion and an upper portion with a slot in the lower portion. A pair of spaced electrodes are mounted in the upper portion, the lower ends of said electrodes being pointed and extending into the area of the slot. A ring member has a central portion bridging the ring, and the ring member is slidably mounted on the lower portion of the body member. An externally threaded member is threadedly connected to the internally threaded hollow portion of said body member. Whereby an insulated two conductor cable may be inserted through said slot between the lower ends of the electrodes and the ring member and the externally threaded member may be screwed into the body member to force the electrode points through the insulation of the cable and causing each electrode point into contact with one of the conductors of said cable.

Growing community of inventors

Little Neck, NY, United States of America

Stanley S Brenner