Patent · US Expired

Electropneumatic door control

US4546845A · kind A · utility

26Cited by

8References

2Claims

0Family size

Assignee

Wabco Fahrzeughremsen GmbH · DE

Inventors

Dietmar Meyer · Barsinghausen, DE
Horst Scheibe · Barsinghausen, DE

Key dates

Filing date	Nov 15, 1982
Grant date	Oct 15, 1985
Priority date	—
Expiry date	Nov 15, 2002

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE05Y2900/51
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

An electropneumatic door control for vehicles is disclosed which consists of a pneumatic portion and an electronic portion. The electronic portion processes successive commands actuated by the vehicle operator to channel the signals to the pneumatic portion of the apparatus to activate alternate door openings and closings. Any blockage of the door movement is detected and signals processed to reverse the door closing or to halt the opening until the fault is corrected. The electronic portion also assures that the vehicle doors can only be opened after the vehicle has come to a stop, that when the vehicle doors are open the station or parking brake is held engaged, and that an audible warning signal sounds for a predetermined interval before the closing of the door.

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