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:
Mar. 02, 1993
Filed:
May. 15, 1991
John H Pennington, Green River, WY (US);
General Chemical Corporation, Parsippany, NJ (US);
Abstract
A tensioning car for a flexible continuous tram comprises a center beam structure adapted to support a segment of the transport belt and a pair of side beam structures, one on each side of the center beam structure and each having coupling devices for coupling it to an adjacent car of the tram. Guide bars join the side beam structures for limited movement relative to each other lengthwise of the tram and also support the center beam structure. Chain guides on each of the beam structures guide the crawler chain of the tram. A pair of hydraulic piston/cylinders, one adjacent each end of the tensioning car, are coupled between the side beam structures. A constant pressure accumulator connected to each cylinder supplies a hydraulic fluid under a substantially constant pressure to the respective cylinder so that the cylinders urge the side beam structures resiliently away from each other and thereby maintain a generally constant tension in the crawler chain.