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. 04, 2003
Filed:
Jun. 15, 2001
Anthony E. Scotto, Pittsburgh, PA (US);
SMS Demag, Inc., Pittsburgh, PA (US);
Abstract
A bearing system for accommodating angular movements occurring during operation of a linear actuator in a lifting structure for a ladle containing liquid steel in a continuous casting installation. Annular bearings on a piston and in an end wall of a piston and cylinder assembly allow free rotation of the piston about a first axis during controlled excursions of translating motion by the piston along the cylinder. A first attachment shaft is joined by cylindrical bearings to the arms of a first clevis for only sliding rotational motion about a second axis. A second attachment shaft secured to a second clevis carries a cylindrical bearing between the clevis arms for only sliding rotational motion about a third axis parallel with the second axis. A saddle is secured to an attachment on the piston rod and having an elongated annular load-bearing surface defining a fourth axis extending along a force transmitting junction with the first attachment shaft. A second pivot block anchored for support by the actuator support base has an elongated annular load-bearing surface defining a fifth axis extending along a force transmitting junction with the cylindrical bearing of the second attachment shaft.