Data General Corporation

Texas Instruments Corporation

Thomas D Wiseley

Richard C Fortier

Marvin Menzin

Sigmund Hinlein

Hugh Robinson

Edward A Agranat

Pavel Otavsky

Lawrence P Kleven

Jerry Crisafulli

Severne Johnson

Normand A Berube

David J Smith

A three pole relay which operates in response to the flow of normal operating current across fluorescent lamps to activate a coil, the coil coperating a relay to open switches disposed in all of the filament lines associated with the lamp to shut off filament current while maintaining current flow across the lamps themselves.

Current sensing relay

A rigid magnetic disc memory apparatus having an aperture formed in the base such that contaminants from the bearings are removed before they can migrate into the vicinity of the discs. In a preferred embodiment the aperture is located in the region of high pressure created by a rotor and stator assembly. The pressure differential causes air and contaminants to flow out of the disc drive enclosure. The pressure differential across the aperture is increased by connecting a duct between the aperture and the inlet side of the clean air supply blower.

Disc drive dynamic seal

Magnetic recording head assembly for multiple tracks, the assembly including a spring gimbal supporting a plurality of sliders, each slider including at least one recording head, said spring permitting substantial motion of each of the sliders in the z direction as well as pitch and roll motion and restraining motion of said sliders in the x, y directions, as well as yaw motion.

Magnetic recording head assembly support with a sinuous gimbal spring

Growing community of inventors

Acton, MA, United States of America

Thomas D Wiseley