Patent · US Expired

Controller for controlling electrical heaters

US4713502A · kind A · utility

2Cited by

4References

13Claims

0Family size

Assignee

E.G.O. Elektro-Gerate Blanc u. Fischer · DE

Inventors

Willi Essig · Eppelheim, DE
Hans Mayer · Jona, CH
Siegfried Mannuss · Sternenfels, DE

Key dates

Filing date	Oct 17, 1985
Grant date	Dec 15, 1987
Priority date	—
Expiry date	Oct 17, 2005

Classification

Technology area (CPC H)Electricity
CPC primaryH01H25/06
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A controller has an axially releasable locking unit operable to prevent rotation of a regulating shaft from at least one locking position, without first axially moving the regulating shaft. This push-to-turn or pull-to-turn locking unit is arranged entirely outside of a housing of the controller, and is arranged with mounting particulars matched to those of the controller such that the same controller assembly can be used interchangeably either with a push-to-turn locking unit or without such a unit.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.