Process for preparing low voltage varistors

Details Process for preparing low voltage varistors Process for preparing low voltage varistors

1978-08-21

1983-03-22

Parrish, John H.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By mechanically introducing gas into material

264 61, H01F 4102

Patent

active

043775411

ABSTRACT:
Low voltage varistors having one or more recesses or dimples which reduces the thickness of the varistor in the recessed areas are provided by an improved process which comprises fitting a pressing surface on a die punch with a resilient material, preferably an abhesive material such as polydimethylsiloxane, having one or more nipples whereby during pressing of a metal oxide varistor powder contained in the die cavity the nipple imparts a depression thereby reducing the thickness of the varistor body in said depression. In addition, the resilient material aids in the distribution of the powder during pressing and with the preferred abhesive material aids also in the release of the pressed body from the die.

REFERENCES:
patent: 290443 (1883-12-01), Magowan
patent: 3344209 (1967-09-01), Hague et al.
patent: 3835210 (1974-09-01), Kirkpatrick

Affiliated with

Also associated with

Rating

Process for preparing low voltage varistors does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for preparing low voltage varistors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing low voltage varistors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1868974