Geometrical instruments – Distance measuring – Opposed contacts
Reexamination Certificate
2011-08-16
2011-08-16
Bennett, G. Bradley (Department: 2841)
Geometrical instruments
Distance measuring
Opposed contacts
C033S787000
Reexamination Certificate
active
07997001
ABSTRACT:
The telescopic ball bar gauge provides a pair of movable test measuring points that are spaced apart a known distance so that the points may be contacted by a machine probe of a coordinate measuring machine or the like to generate test data. This allows varying inaccuracies within the machine to be detected and accounted for during normal operation of the machine. The telescopic ball bar gauge includes a plurality of telescoping segments forming at least one linear variable differential transformer. The at least one linear variable differential transformer is used to measure the linear distance between two balls mounted on opposed ends of the ball bar gauge. A transmitter in communication with the at least one linear variable differential transformer transmits a measurement signal representing the linear distance between the two balls.
REFERENCES:
patent: 4435905 (1984-03-01), Bryan
patent: 4437151 (1984-03-01), Hurt et al.
patent: 4492036 (1985-01-01), Beckworth
patent: 4763507 (1988-08-01), Zofchak
patent: 5214857 (1993-06-01), McMurtry
patent: 5533271 (1996-07-01), Callaghan, Jr.
patent: 5647136 (1997-07-01), Jostlein
patent: 5813128 (1998-09-01), Bailey
patent: 5873175 (1999-02-01), Johnston
patent: 6269544 (2001-08-01), Pahk et al.
patent: 6463667 (2002-10-01), Ushio et al.
patent: 6732445 (2004-05-01), Scoville
patent: 7040033 (2006-05-01), Zhu et al.
patent: 7278222 (2007-10-01), Meier et al.
patent: 7351129 (2008-04-01), Bird et al.
patent: 7712224 (2010-05-01), Hicks
patent: 2003/0131490 (2003-07-01), Johansson et al.
patent: 2008/0229601 (2008-09-01), Lightfoot
patent: 2010/0229415 (2010-09-01), Knudsen
patent: 2011/0071437 (2011-03-01), Merchant
patent: WO9718436 (1997-05-01), None
Bennett G. Bradley
King Fahd University of Petroleum and Minerals
Litman Richard C.
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