Title:
SWITCHING DEVICE DEPENDING UPON TEMPERATURE AND/OR CURRENT
Document Type and Number:
Japanese Patent JPS59132525
Kind Code:
A
Abstract:
For stopping drift or other undesired changes in the response temperatures of a thermal switch using a bimetallic element for driving a moving contact, the design is such that the moving contact and a counter-contact are supported on a common insulating supporting part and the counter-contact is elastically and yieldingly fixed on the supporting part. The lengths of the bimetallic element and of the a strip supporting the counter-contact that may be moved are different to each other so that the two contacts will make contact at different points thereon and with a rubbing effect for clearing oxide and other undesired coatings forming on the said contacts. For producing such a thermal switch with multiple functions, for example the functions of a temperature automatic controller and a thermal protective device, the counter-contact, that is placed so that it may give way elastically, is acted upon by a further bimetallic element.
Inventors:
PEETAA HOOFUZEESU
Application Number:
JP16952083A
Publication Date:
July 30, 1984
Filing Date:
September 16, 1983
Export Citation:
Assignee:
HOFSASS P
International Classes:
H01H37/52; H01H37/54; H01H61/00; H01H61/01; H01H61/02; H01H61/04; H01H81/02; H01H1/18; H01H37/00; (IPC1-7): H01H37/52; H01H61/00
Domestic Patent References:
| JPS51159877U | 1976-12-20 | |||
| JPS5697929A | 1981-08-07 | |||
| JPS5240373U | 1977-03-22 | |||
| JPS5761232A | 1982-04-13 | |||
| JPS3710315Y1 |
Attorney, Agent or Firm:
Toshio Yano