Data General Corporation

Adaptive Wireless Solutions, L.l.c.

Richard Bruce McKinstry

Joseph Charles Godbout

An acoustic apparatus includes a threaded stud having an end and a hole in the end, an acorn nut having a hole therein, and an acoustic sensor received in the hole of the stud and secured to the stud and acorn nut when the acorn nut is screwed onto the stud, thereby sandwiching the acoustic sensor between the stud and the acorn nut. This apparatus can be included in an acoustic sensor assembly, such as an acoustic monitor field unit or a remote acoustic sensor assembly.

Acoustic sensor holder and apparatus using same

A digital magnetic tape transport incorporates a pair of adjacent vacuum storage columns each with oppositely disposed closed and open ends, a magnetic head assembly defining a generally linear tape threading path along one side of the vacuum storage columns and substantially parallel to the vacuum columns lengthwise direction, a pair of tape storage reels mounted at a second side of the vacuum storage columns positioned along a line substantially parallel with the linear tape threading path, whereby a rear closed end of the vacuum column adjacent to a storage reel is tapered at an angle substantially tangent to the adjacent storage reel, allowing for: elimination of an idler roller; an improved take-up path, and; for easier manual threading of the tape. A similar tapered configuration is provided at the rear end of the second vacuum column also eliminating the necessity of an idler roller. The arrangement decreases the total number of idler rollers necessary for the overall tape path to in turn decrease the frictional contact of the tape encountered. At the same time, because of the V-shaped configurations at the rear walls where there are positioned relatively large apertures for supplying vacuum to the vacuum columns, the positioning of a central narrow common plenum is provided for thereby allowing for positioning adjacent elongated chambers with relatively small apertures for separately sensing vacuum in each vacuum column to determine a varying tape loop position.

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Northboro, MA, United States of America

Richard Bruce McKinstry