Leviton Manufacturing Company, Inc.

George E Johnson

Walter Newman

Stanley S Brenner

James N Pearse

Paul Endres

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.

Flourescent lamp socket

Anti-theft electrical socket for four pin U-shaped fluorescent lamp

Combined electrical socket and retainer for four pin U-shaped

The present invention provides a device for mounting a lamp socket, particularly for a candelabrum lamp having an elongated branch support having a passage for passing wires between the socket and an electrical source. The elongated support has a threaded end portion with an opening leading to the passage. A clip member having a vertical pocket and a horizontal wall forming an aperture for receiving the threaded portion of the support and a pair of opposed clip elements having opposed arcuate edges is pressed upon or screwed around the threaded portion via the clip elements. A bar connected to the socket has a free mounting end that is adapted to slide into the vertical pocket of the clip member. The socket is removable from the clip. The clip can be pressed or screwed onto the threaded portion by a mounting tool. Likewise, the clip can be unscrewed from the threaded member by the mounting tool.

Clip device

A mounting system for a U-shaped tube of a fluorescent lamp that has a free end and a connecting end having a coupling member that holds the two tube portions together. The connecting end has male electrical prongs that are insertable into female electrical receptacles formed in a body wall of a mounting body. The body wall is transverse to the U-tube. A support member extends outwardly from under the mounting body under the coupling member to provide resistance to downward movement of the U-tube. A wire locking member connected to the mounting body extends over the coupling member and includes a cross-wire having a U-portion that clamps against the outer wall of the mounting member between the two tube portions so as to grip the U-tube and prevent it from laterally sliding from the mounting body. The locking member also acts to prevent sideways movement of the U-tube in one direction when the U-tube is set vertically.

Fluorescent lamp mounting system

A removable locking system for a fluorescent U-tube electrically connected to a mounting body connected to a surface. The mounting body has a flange extending over the coupling member of the connecting end of the U-tube at the mounting body. A locking screw member is threaded through a hole in the flange into pressing contact with the top of the coupling member of the U-tube. A self-locking washer is positioned between the head element of the screw and the top surface of the flange. The locking screw can be rotated to lock or free the U-tube from its mounted association with the mounting body.

Theft-resistant device for fluorescent lamp

An adapter for permitting a lamp to be threaded into a light socket while preventing damage to the socket through application of excessive threading force includes a threaded sleeve rotatably mounted on a cylindrical body and conductive securing means for preventing longitudinal movement of the sleeve with respect to the body, the securing means being urged into sliding electrical contact with the sleeve and being connected to an electrical conductor for maintaining electrical continuity between the sleeve and an energizing terminal of the lamp. A cam on the ring cooperates with an opening in the sleeve for permitting relative rotation between the sleeve and body in one direction when a threshold torque is exceeded to prevent damage to the socket but preventing relative rotation in the other direction so that the lamp and adapter can be threaded out of the socket. Another embodiment includes a resilient finger extending from the ring that springs into engagement with a slot formed on the rim of the sleeve and into a cavity in the cylindrical body when the slot is rotated into registry with the finger and the sleeve.

Threaded lamp adapter system with spring adapter

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

An adapter for permitting a lamp to be threaded into a light socket while preventing damage to the socket through application of excessive threading force includes a threaded sleeve rotatably mounted on a cylindrical body and conductive securing means for preventing longitudinal movement of the sleeve with respect to the body, the securing means being urged nto sliding electrical contact with the sleeve and being connected to an electrical conductor for maintaining electrical continuity between the sleeve and an energizing terminal of the lamp. A cam on the ring cooperates with an opening in the sleeve for permitting relative rotation between the sleeve and body in one direction when a threshold torque is exceeded to prevent damage to the socket but preventing relative rotation in the other direction so that the lamp and adapter can be threaded out of the socket.

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Bronxville, NY, United States of America

George E Johnson