Contact-sensing probe

Details Contact-sensing probe Contact-sensing probe

1987-04-09

1988-09-13

Martin, Jr., William D.

Geometrical instruments

Gauge

Pivoted probes

33172E, G01B 700

Patent

active

047699191

ABSTRACT:
The probe has a piezo-electric sensor (22A) for determining initial contact of a stylus (16) with a workpiece (4). It also has a kinematic support (18) made up of confronting electrical contacts (19, 20) which are connected to indicate displacement of the stylus from a rest position and correct reseating on the kinematic support. The sensor (22A) and the electrical contacts (19, 20) are connected to an electrical circuit (24) within the probe. The circuit (24) has only two terminals connecting it to an external interface (9), which both receives the signals from and supplies power to the sensor (22A) and the contacts (19, 20). This enables the receipt of a signal from the contacts (19, 20) to provide a fail-safe backup to the signal from the sensor (22A) and to indicate correct reseating of the probe, while maintaining the interface (9) compatible with prior art probes having only one workpiece-engagement sensing arrangement with two terminals.

REFERENCES:
patent: 4153998 (1979-05-01), McMurtry
patent: 4270275 (1981-07-01), McMurtry
patent: 4301338 (1981-11-01), McMurtry
patent: 4339714 (1982-07-01), Ellis
patent: 4443946 (1984-04-01), McMurtry
patent: 4451988 (1984-06-01), McMurtry
patent: 4462162 (1984-07-01), McMurtry
patent: 4578873 (1986-04-01), Klingler et al.
patent: 4702013 (1987-10-01), McMurtry

Affiliated with

Also associated with

Rating

Contact-sensing probe does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-799220