Other

Sperry Corporation

Allen D Wilcox

Joseph H Labrum

A brush head and a cylinder filled with dentifrice, within the chamber. A dial is rotated, relative to the cylinder, a piston is enabled to push dentifrice through to the brush head channel. Dentifrice is then forced between a series of arranged bristles, seated in angular degree, around the exiting bore. These bristle expand toward a vertical position, acting as a guide to direct the moving dentifrice atop of the remaining brush head bristles. The cylinder can be refilled.

Toothbrush having integral dentifrice dispenser

Method and apparatus for monitoring the water level in the ground in which a casing hole is formed in the ground by driving a solid rod into the ground which compresses the ground material to form a compacted but porous wall for the casing hole. The rigid rod is withdrawn and a perforated tubular member of lesser diameter than the inner diameter of the casing hole is inserted into the casing. The water level rises within the tubular member and a dip-stick is inserted into the top of the tubular member to measure the water level. The dip-stick or the tubular member has a stop to limit the insertion distance of the dip-stick.

Water Monitor

A signal handling system of improved dynamic range wherein a logarithmic circuit is interposed between a photo-diode array and other output circuitry.

Photo diode-array dynamic range for optical signal systems

This invention is directed to a spectrum analyzer system which is laser-driven and which includes a standard Bragg cell and a standard photo-diode array as the output detector. In this system, the Bragg cell is driven by a bandwidth expansion circuit which receives the typical R.F. input signal, supplies it to a variable center frequency filter or to a bank of filters which then down-converts the signal and supplies the signal to a real time signal storage memory at a first signal rate. The signals are retrieved from the memory at a second, much greater signal rate, up-converted and supplied to the Bragg cell to affect the operation thereof in the usual fashion. This time base compression circuit has the effect of producing an improved optical spectrum analyzer with expanded frequency resolution.

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Bountiful, UT, United States of America

Allen D Wilcox