Patent · US Expired

Apparatus having a position actuator

US5103787A · kind A · utility

10Cited by

12References

25Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Helmut Bassler · Waiblingen, DE
Heinz Ehrentraut · Stuttgart, DE
Friedrich Haerterich · Gerlingen, DE

Key dates

Filing date	Feb 27, 1991
Grant date	Apr 14, 1992
Priority date	—
Expiry date	Feb 27, 2011

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D11/107
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A positioning apparatus including a positioner, a restoring suspension means, a servo drive and an actuator, the position of which determines the power of a driving engine. The restoring suspension means assures that the actuator is always in a precisely definable position regardless of any other spring. The restoring suspension means may include a plurality of integrally cohering restoring springs. Satisfactory operation of the apparatus is assured even if one of the restoring springs should fail. The servo drive is embodied such that in the event of an electrical defect the engine operates at an intended speed (rpm). The apparatus is particularly suitable for motor vehicles in which the engine rpm is to be regulated precisely in idling via a throttle valve.

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