Other

E-Systems, Inc.

Steven F Gorman

Douglas J Gorman

Joseph H Zablotney

A tool bit storage and retrieval device includes a housing, a caddy configured to slideably engage an interior of the housing and to removeably receive a plurality of tool bits, and a magnet affixed to the caddy and configured to attract the plurality of tool bits. The caddy is moveable between an open position and a closed position. The closed position is defined by the caddy being substantially contained by the housing. The open position is defined by the caddy being translated outwardly from the housing. The plurality of tool bits are moveable between a first position when the caddy is in the open position, and a second position when the caddy is in the closed position.

Tool bit storage and retrieval device

A method and system for determining the direction and range to a signal source from a single movable antenna. The direction and range are determined by the simultaneous solution of trigonometric equations which describe triangles including the source and at least two positions assumable by the antenna as apices. The simultaneous equations incorporate the distances from the source to each antenna position as triangle sides and the determination of the relationship between these sides provides for the solution of the equations. The relationship of the triangle sides is determined by detecting periodic symbols occurring in the source signal while the antenna is moved through multiple positions. Actual symbol occurrences corresponding to each antenna position are detected. The expected occurrences at the first antenna position of the symbols actually occurring at the subsequent antenna positions are determined. The differences between the actual and expected symbol occurrences indicate the change in the distance travelled by the signal to each antenna position relative to the distance travelled to the first antenna position. Accordingly the distance from the source to each antenna position may be described as a function of the distance to the first antenna position and the simultaneous equations may be solved for direction and range to the source from any of the antenna positions.

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Arlington, VA, United States of America

Steven F Gorman