Pacific Scientific Company

Winfield Corporation

Thomas E Beling

Mark E Martich

John M Ossenmacher

Stephen C McLeod

Wayne M Spani

A compact dimmable fluorescent lamp includes a dimming control ballast within a base which installs directly on an existing incandescent or other lighting fixture. The lamp mounts a fluorescent illumination element and includes an accessible dimmer control member connected to the dimming control ballast. In the preferred embodiment, a rotatable lamp globe both covers the fluorescent lamp and is coupled to the control element. The globe thus provides the dual functions of decoratively covering the fluorescent lamp tubes and serving as the dimmer control by rotating the globe to vary the amount of power that is supplied to the lamp. In other embodiments, a rotatable external annular ring extends substantially around the circumference of the lamp base and is connected to the dimming ballast control to serve as the dimmer control.

Fluorescent lamp with globe activated dimmer switch

Dimmable fluorescent lamp apparatus includes a dimming control element housed in an integral adapter having a base which installs directly on an existing incandescent or other lighting fixture. The adapter mounts a fluorescent illumination element either fixedly or removably and replaceably. The lamp apparatus includes a manually accessible adjustment element connected with the control element and mounted on the adapter. The adjustment element can be an electrical adjustment element or an optical adjustment element.

Fluorescent lamp apparatus with integral dimming control

Compact dimmable fluorescent lamps with central dimming ring

A device for detecting the passage of a ferromagnetic object through a predetermined space has a substantially circular base which circumscribes the space. An inner detector coil and an outer detector coil are concentrically mounted in coplanarity on the base. Voltages are induced on the coils in response to the passage of a nearby magnetic field, such as the small permanent magnetic field associated with a ferromagnetic object. A signal processing circuit compares the induced voltages on the coils to indicate passage of a metal object through the circumscribed space when the inner coil voltage exceeds the outer coil voltage.

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Framingham, MA, United States of America

Thomas E Beling