Patent · US Expired

Control element

US4426988A · kind A · utility

7Cited by

5References

4Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Max Greiner · Gerlingen, DE
Gerold Grimm · Leonberg, DE
Heinrich Knapp · Leonberg, DE

Key dates

Filing date	Aug 25, 1982
Grant date	Jan 24, 1984
Priority date	—
Expiry date	Aug 25, 2002

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M2003/067
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A control device with an electric servo motor is proposed, by means of which a throttle device can be operated, which opens, to a greater or lesser degree, the passage diameter of a flow line, especially the passage diameter of a by-pass line around a throttle valve disposed in the intake line of an internal combustion engine. The control device has an elastic element which moves the throttle device, during an interruption of the current supply to the electric servo motor into a defined position opening the passage diameter of the flow line.

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