Litton Systems, Inc.

Quintel Corporation

Thomas Wing

Clifton T Council

Ernest J Funk

Lloyd Michael Germain

Jack C Lane

Edward S Westbrook, Iv

A gun equilibrator is shown including a driven shaft connected to the gun which compresses coned-disc springs as movement of the shaft lowers the elevated gun. The shaft is driven by a rotating drive nut that has acme threads engaging similar threads on the driven shaft. The simple design permits the compressed springs to equilibrate the gun while the acme threads absorb recoil forces.

Equilibrator assembly for a gun system

A piezoelectric transducer drive for use within a ring laser gyro is shown wherein a resistive element is combined in a negative feedback loop with a second resistive element to provide a feedback signal which is constant with variations in the transducer material and linear with temperature change. The feedback signal is amplified and applied to a comparator whose output is modulated with an AC signal and applied to a power amplifier that drives the piezoelectric transducer for controlling the displacement thereof uniformly over a wide temperature range.

Piezoelectric transducer drive having temperature compensation

A locking device for use in the chuck of an optical alignment and exposure apparatus is disclosed. The locking device comprises a plurality of flat, flexible blades fastened in pairs to a chuck plate in the chuck. Between each pair of blades there is a stationary element fastened to a base member in the chuck. Vacuum cups are fastened to the blades so that the blades are clamped tightly against the stationary element when the vacuum cups are evacuated.

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Woodland Hills, CA, United States of America

Thomas Wing