Measurement instrument

Details Measurement instrument Measurement instrument

2008-01-22

2008-01-22

Hirshfeld, Andrew H. (Department: 2858)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

C324S066000, C033S813000

Reexamination Certificate

active

07321231

ABSTRACT:
A measuring instrument has a phase signal transmitter that transmits, in accordance with a rotation of the spindle, a phase signal that differs corresponding to the rotation angle of the spindle, and an arithmetic processor that arithmetically processes the phase signal to obtain the absolute position of the spindle. The phase signal transmitter transmits the phase signal at a predetermined pitch. Since the phase signal differs corresponding to the rotation angle of the spindle, a rotation angle of the spindle is uniquely determined by the phase signal. Unlike an increment type measuring instrument, since there is no concern that the signal will be skip-read, the spindle can be rotated at high speed, so that operational performance of the micrometer can be improved. Further, since there is no concern that the signal will be skip-read, the phase signal can be minutely varied with respect to the rotation of the spindle.

REFERENCES:
patent: 5920198 (1999-07-01), Suzuki et al.
patent: 6463671 (2002-10-01), Saeki
patent: 7013576 (2006-03-01), Hayashida et al.
patent: 7043852 (2006-05-01), Hayashida et al.
patent: 2003/0135347 (2003-07-01), Sasaki
patent: 2004/0118004 (2004-06-01), Hayashida et al.
patent: U-49-080260 (1972-10-01), None
patent: A-54-130152 (1979-10-01), None
patent: A-2001-141402 (2001-05-01), None
patent: A-2003-202201 (2003-07-01), None

Affiliated with

Also associated with

Rating

Measurement instrument does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Measurement instrument, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurement instrument will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2781775