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:
Nov. 29, 1983
Filed:
May. 07, 1981
Josef Theurer, Vienna, AT;
Gernot Bock, Aschach, AT;
Abstract
A mobile track correction machine, which comprises a vertically adjustable tool carrier guided along the track, track lining and lifting tools on the carrier, hydraulic lining and lifting jacks linking the carrier to the machine frame and a control circuit controlling actuation of the jacks and including a switch operable to terminate actuation of the lifting jack, has a safety arrangement for terminating the actuation on disengagement of the tool carrier from the track. The safety arrangement includes an electronic, inductive proximity fuse affixed to the tool carrier and mounted above, and at a nominal distance from the running face of the rail engageable by a respective lifting tool, the proximity fuse being connected to the switch and capable of transmitting an operating signal thereto without touching the running face when the distance between the proximity fuse and the running face is more than the nominal distance.