Piston position detector for fluid pressure cylinder

Details Piston position detector for fluid pressure cylinder Piston position detector for fluid pressure cylinder

1987-11-04

1988-12-27

Garrett, Robert E.

Expansible chamber devices

With inspection window in expansible chamber wall portion

With lock

91 1, 91DIG4, 324207, 324208, 246249, F01B 2526, F01B 3112

Patent

active

047932414

ABSTRACT:
In a piston position detector for a fluid pressure cylinder operating by fluid pressure such as air pressure or oil pressure, a permanent magnet is mounted on a piston sliding in a non-magnetic cylinder, and a magnetic detection element to respond to the magnetic field formed by the permenent magnet and to generate detection signals is mounted to any position of the cylinder. A magnetic induction piece in sheet form is interposed between the cylinder and the magnetic detection element, so that when the permanent magnet faces the front of the magnetic detection element, the magnetic induction piece is magnetically saturated by performing bypass induction of only a part of the magnetic flux of the permanent magnet to act on the magnetic detection element and most of the magnetic flux acts on the magnetic detection element. As the permanent magnet is shifted from the front of the magnetic detection element, the ratio of the magnetic flux subjected to the bypass induction through the magnetic induction piece is increased and the magnetic flux density acting on the magnetic detection element is rapidly decreased, thereby the piston position can be detected with precise accuracy.

REFERENCES:
patent: 4403515 (1983-09-01), Iwasaki
patent: 4618823 (1986-10-01), Dahlheimer et al.

Affiliated with

Also associated with

Rating

Piston position detector for fluid pressure cylinder does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Piston position detector for fluid pressure cylinder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Piston position detector for fluid pressure cylinder will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-861468