Patent · US Expired

Electric hotplate with a thermostat

US4680452A · kind A · utility

6Cited by

1References

28Claims

0Family size

Assignee

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

Inventors

Karl Fischer · Bretten, DE
Felix Schreder · Oberderdingen, DE
Robert Kicherer · Maulbronn, DE

Key dates

Filing date	May 8, 1986
Grant date	Jul 14, 1987
Priority date	—
Expiry date	May 8, 2006

Classification

Technology area (CPC H)Electricity
CPC primaryH05B3/70
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electric hotplate (2) with a cast iron hotplate body (1) has in its unheated central area (14) a thermostat (19) which, by projections (51) on a cover plate (17), is forced into clearly defined contact with the lower surface (50) of the hotplate body (1) in the vicinity of the unheated central area (14). Casing (23) of thermostat (19) has three projections (8), which are supported on surface (50). The unheated central area (14) does not have to be covered by any cover separate from cover plate (17a). Casing (23) has a recess open on one side and which is not closed by a cover.

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