Measuring and testing – Rotor unbalance – Dynamic
Patent
1994-09-30
1996-11-19
Williams, Hezron E.
Measuring and testing
Rotor unbalance
Dynamic
73471, G01M 122
Patent
active
055764908
ABSTRACT:
A rotary element dynamic imbalance determining apparatus includes a spindle having a first end for removably supporting a rotary element the imbalance of which is to be determined, and a housing for rotatably mounting the spindle. An output signal related to imbalance in the supported rotary element is generated as the spindle rotates. A rotary fluid coupling comprises a chamber between the spindle and housing, a port in the housing for coupling the chamber to a source of compressed air and a one-way fluid seal for dividing the chamber into a first portion and a second portion. A passageway extends along the spindle from the second portion to the first end of the spindle to supply inflating air thereto.
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patent: 4191055 (1980-03-01), Orem et al.
patent: 4234200 (1980-11-01), Orem et al.
patent: 4250756 (1981-02-01), Maus
patent: 4423632 (1984-01-01), Madden et al.
patent: 4545247 (1985-10-01), Wilson et al.
patent: 4685333 (1987-08-01), Wilson et al.
Carlson Roy F.
Gross Peter L.
Illinois Tool Works Inc.
Kwok Helen C.
Williams Hezron E.
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