Gte Products Corporation

Gte Sylvania Incorporated

Ing C. Olivetti C., S.p.a.

Harold L Hough

Ronald G Blaisdell

Thomas Haraden

George J English

Robert E Levin

Peter Gagnon

Andre C Bouchard

Robert Y Pai

Joseph P Gallant

Julian J Wierzbicki

Arnold Westlund

Harold H Hall, Jr

Robert P Bonazoli

Kirti B Chakrabarti

Philip E Moskowitz

Thomas J Gilligan, Iii

C Edward Kowalski

Richard B Martenson

Reflector lamp with neck extender

An arc discharge lamp including a two-piece base member having a main housing and a cap disposed at opposite ends of the lamp envelope. The main housing of the base member includes elongated slots to enable the housing to expand outwardly in response to positioning of the press seal. At least one internally-protruding segment formed in the housing is positioned within a detent formed in the press seal region of the lamp. Following positioning of the press seal, the cap is secured to the main housing. The base member is thus secured to the ends of the lamp envelope without the need for basing cements or the like.

Arc discharge lamp having cementless right-angle base members

An arc discharge lamp including an electrically insulative base member securely positioned at opposite ends of the lamp without the need for basing cements or the like. The base member includes at least one internally-protruding segment for positioning within a detent formed in the press seal region of the lamp. The base member functions to securedly retain the external portions of the lamp's electrical leads in a predetermined alignment.

Arc discharge lamp having cementless base members

A reflector lamp includes a temperature resistant, plastic, tubular neck extender. The neck extender is disposed between a reflector and a base and is attached to the reflector and the base. The extender can be attached to the reflector by clamping eyelets or, alternatively, by an adhesive. The resulting lamp can be used in recessed lighting fixtures.

Neck extender for a reflector lamp

A method of fabricating a filamented capsule from a tubular blank, and a mold used in such fabrication, is provided wherein a first filament is sealed in a first press seal in one end of the blank, and a preform designed to facilitate insertion and positioning of a second filament is formed in an opposite end of the blank, in a single pressing and blowing step.

Filamented lamp manufacture method

An arc discharge lamp having an end-of-life structure and including a light-transmissive envelope having a tubular-shaped main body and a press seal disposed at each end of the main body. An electrode filament having a pair of ends is located in each end of the envelope. Each electrode filament end is in a contiguous relationship with an inside surface of the lamp envelope. When one of the electrode filaments is depleted of electron-emissive material, increased heating of the electrode filament caused by an increase in cathode fall voltage, produces a localized hot spot on the internal surface of the envelope. This localized heating causes a puncture in the lamp envelope and evacuation of the lamp. The introduction of external atmosphere into the lamp extinguishes the arc discharge and renders the lamp inoperable.

Arc discharge lamp containing mechanism for extinguishing arc at

Fluorescent lamp

A method of fabricating an arc discharge capsule from a tubular blank, and a mold used in such fabrication, is provided wherein a first electode is sealed in a first press seal in one end of the blank, and a preform designed to facilitate insertion and positioning of a second electrode is formed in an opposite end of the blank, in a single pressing and blowing step.

Method and mold for fabricating an arc tube for an arc discharge lamp

An apparatus for making an aperture in a coating on an inside surface of a lamp envelope such as a miniature fluorescent lamp envelope. The apparatus includes a magnetic scraping tool disposed adjacent to the inside surface of the lamp envelope and a magnet disposed adjacent to the outside surface of the lamp envelope so as to influence the scraping tool. The magnet acts on the magnetic scraping tool to maintain a scraping portion of the scraping tool in contact with the inside surface of the lamp envelope. As the magnet is moved along the outside of the lamp envelope, the scraping tool is pulled through the inside of the lamp envelope with sufficient clamping force to scrape a desired width of coating from the inside surface of the lamp envelope. In one embodiment, a guide is provided to guide the scraping tool through the lamp envelope. In a preferred embodiment, the scraping tool and the magnet are coupled to the guide. The guide moves the magnet and the scraping tool along the lamp envelope. A scraping insert on the scraping tool is sized to remove the coating from a predetermined area of the inside surface of the lamp envelope.

Method and apparatus for forming apertures in fluorescent lamps

A compact fluorescent lamp unit comprises a double U-shaped discharge tube having a base shell secured to one end thereof. A housing containing the necessary starting and operating circuitry includes a first portion having a standardized base and a second portion surrounding the base shell of the discharge tube. The internal surface of the second housing portion includes a plurality of flexible fingers for securing the base shell to the second portion of the housing. in a preferred embodiment, each flexible finger includes a latch for engaging the base shell. Preferably, the the internal surface of second housing portion further inlcudes a plurality of support ribs for preventing or limiting lateral movement of the base shell within the housing.

Compact discharge lamp unit and method for manufacturing same

By controlling the temperature of a glass reservoir tube attached to a closed vapor cell, the vapor pressure inside the cell can be accurately controlled. The apparatus for controlling the reservoir temperature includes an electric heater, a temperature sensor, heat straps to distribute and remove heat from the reservoir, and a clamp to hold the apparatus in close thermal contact with the exterior of the reservoir. An external control circuit energizes the reservoir heater as required. In the preferred embodiment the vapor cell functions as an optical filter when filled with a heated metallic vapor such as cesium. The reservoir tube functions as the cold spot of the cell and contains a small pool of the metal in liquid form.

Temperature control apparatus for controlling metallic vapor pressure in

Fluorescent lamp or the like

An electric lamp is provided having an outer envelope or jacket with a lamp base attached thereto, the lamp base having an aperture extending therethrough. A sealed inner capsule is supported within the outer envelope and electrically connected to the lamp base and to an electrically conductive elongated member one end of which engages an inner wall of the outer envelope and an opposite end of which extends through the aperture in the lamp base. A spring is provided which urges the one end of the elongated member against the inner wall and which will urge the opposite end of the elongated member out of the aperture if the envelope is broken thereby disconnecting voltage to a lead of the inner capsule.

Automatic shut-off device for an electric lamp

A plug-in lamp assembly for use as a picture element in an information display screen includes a plurality of low-pressure arc discharge lamps for selectively generating multiple colors, a lamp plug for interconnection and mounting of the discharge lamps, and a lamp socket for plug-in attachment of the lamp plug. Each discharge lamp has electrical leads extending from a first end thereof and a light output region at a second end thereof. The lamp plug comprises a base having spaced-apart electrical connector pins and a cap attached to the base. The first ends of the discharge lamps extend through openings in the top wall of the cap into the lamp plug, and selected electrical leads are coupled to the electrical connector pins. The lamp plug and the lamp socket include openings for directing cooling air over the first ends of the discharge lamps. The cooling air is preferably directed from the rear of the display screen through the lamp socket and the lamp plug and is exhausted through the front of the display screen. The lamp socket preferably includes an upstanding locating projection and a spring clip for retaining the lamp plug.

Growing community of inventors

Beverly, MA, United States of America

Harold L Hough