Abstract: An improved apparatus and method for determining the existence and severity of a crack in a shaft system is provided. The apparatus includes means for mounting multiple vibration responsive output transducers around an outer circumference of the shaft system, allowing simultaneous measurements of vibrational response of the shaft system when multiple vibration responsive output transducers are mounted to the mounting means. In a first approach, the mounting means comprises a collar having two connected arcuate members, with drilled milled and tapped apertures for mounting radial input and output transducers. Torsional input and output transducers may also be mounted tangentially on the collar in drilled milled and tapped heads of bolts used to connect the two arcuate members.
Type:
Grant
Filed:
August 16, 1993
Date of Patent:
May 28, 1996
Assignee:
Enprotech Corporation
Inventors:
Scott E. Thibault, William H. Miller, Warren R. Brook, Timothy P. Mannix
Abstract: An integral biomolecule preparation device which accomplishes all of the nucleic acid separation steps, including centrifugation, reagent addition, and pipeting, automatically without human intervention to fully automate the DNA separation procedure.
Type:
Grant
Filed:
August 19, 1992
Date of Patent:
February 14, 1995
Assignee:
Enprotech Corporation
Inventors:
Harry E. Petschek, Henry Kaufmann, Robert A. Quinlan, David A. DeBonville, Martin J. Sklar, Ronald D. Danehy, Michael Foley, John McG. Dobbs, David Banks