The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 11, 2002
Filed:
Dec. 11, 2000
Applicant:
Inventors:
Herbert Achleitner, Graz, AT;
Josef Hörtler, Knittelfeld, AT;
Assignee:
VAE Aktiengesellschaft, Vienna, AT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B61L 5/00 ;
U.S. Cl.
CPC ...
B61L 5/00 ;
Abstract
In a device for displacing the movable parts of rail switches or crossings, in which a plurality of hydraulic cylinder piston units engaging in an offset manner in the longitudinal direction of the rails are each connected in series, at least one directional or seat valve ( ) capable of being adjusted in a pressure controlled manner is inserted in the duct ( ) that connects the hydraulic cylinder piston units ( to ) arranged in series, which directional or seat valve blocks the connection to the consecutive cylinder piston unit if a preset differential pressure is exceeded.