Composite circuit protection devices

Details Composite circuit protection devices Composite circuit protection devices

1988-02-04

1988-10-25

Paschall, M. H.

Electric heating

Heating devices

With current connection and/or disconnection means

219505, 219494, 219491, 338 22R, 361103, 361 57, H05B 102

Patent

active

047805986

ABSTRACT:
Circuit protection devices which comprise a PTC conductive polymer element and a second electrical component which is thermally coupled to the PTC element and which, when a fault causes the current in the circuit to become excessive, generates heat which is transferred to the PTC element, thus reducing the time taken to "trip" the PTC element. The second component is for example a voltage-dependent resistor which is connected in series with the PTC element under the fault conditions and is thus protected from damage.

REFERENCES:
patent: 3287684 (1966-11-01), Armbruster
patent: 3861029 (1975-01-01), Smith-Johannsen et al.
patent: 4034207 (1977-07-01), Tamada et al.
patent: 4037082 (1977-07-01), Tamada et al.
patent: 4051550 (1977-09-01), Seno
patent: 4099216 (1978-07-01), Weberg
patent: 4162395 (1979-07-01), Kobayashi et al.
patent: 4174511 (1979-11-01), Knapp et al.
patent: 4177446 (1979-12-01), Diaz
patent: 4177785 (1979-12-01), Sundeen
patent: 4237411 (1980-12-01), van Konynenburg et al.
patent: 4247441 (1980-12-01), van Konynenburg
patent: 4388607 (1983-06-01), Toy et al.
patent: 4413174 (1983-11-01), Ting
patent: 4413301 (1983-11-01), Middleman et al.
patent: 4426339 (1984-01-01), Kamath et al.
patent: 4445026 (1984-04-01), Walker
patent: 4467310 (1984-08-01), Jakab
patent: 4481498 (1984-11-01), McTavish et al.
patent: 4542365 (1985-09-01), McTavish et al.
patent: 4549161 (1985-10-01), McTavish et al.

Affiliated with

Also associated with

Rating

Composite circuit protection devices does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2270608