Length measuring system

Details Length measuring system Length measuring system

1994-11-14

1996-09-10

Cuchlinski, Jr., William A.

Geometrical instruments

Distance measuring

Scale reading position sensor

G01B 1104

Patent

active

055533906

ABSTRACT:
A length measuring system having a scale with a first portion and a second portion separated by a gap, wherein the first and second portions each have incremental graduations. The system further includes a scanner unit for scanning the incremental graduations of the first and second portions, wherein the scanner unit has two groups of scanner elements spaced apart by a greater than the width of the gap. The system has at least one control track parallel to and next to the incremental graduations of the first and second portions. A further scanner element is provided to scan the at least one control track and produce an output signal, wherein the output signal is a function of the absolute position of the first and second portions and controls a switchover from one group of scanner elements to the other group of scanner elements. The absolute position of the first and second portions is derived from the control track over the entire measurement length of the scale and the measurement increment of the control track is greater than the measurement increment of the incremental graduations of the first and second portions.

REFERENCES:
patent: 4110828 (1978-08-01), Baumgartner et al.
patent: 4158509 (1979-06-01), Rieder et al.
patent: 4229646 (1980-10-01), Burkhardt et al.
patent: 4229647 (1980-10-01), Burkhardt
patent: 4306220 (1981-12-01), Schwefel et al.
patent: 4385836 (1983-05-01), Schmitt
patent: 4519140 (1985-05-01), Schmitt
patent: 4616131 (1986-10-01), Burkhardt
patent: 4628609 (1986-12-01), Rieder et al.
patent: 4645925 (1987-02-01), Schmitt
patent: 4654527 (1987-03-01), Schmitt
patent: 4688019 (1987-08-01), Schmitt
patent: 4701615 (1987-10-01), Schmitt
patent: 4965503 (1990-10-01), Watanabe et al.
patent: 4983900 (1991-01-01), Nashiki et al.
patent: 4999623 (1991-03-01), Affa
patent: 5010655 (1991-04-01), Rieder et al.
patent: 5062214 (1991-11-01), Gustafsson et al.
patent: 5115573 (1992-05-01), Rieder et al.

Affiliated with

Also associated with

Rating

Length measuring system does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1311302