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:
Aug. 10, 1999
Filed:
Mar. 02, 1998
Andreas Rutz, Lindau, DE;
Lindauer Dornier Gesellschaft mbH, Lindau, DE;
Abstract
A guide rail for supporting the guide rollers of tenter clamps, in a tentering machine such as a film stretching machine, includes a plurality of spring steel bands clamped to a support member of the tentering machine by a clamping block and clamping bolt. To ensure that the guide rollers remain constantly in contact with the guide rail, the guide rail is elastically yieldable in the thickness direction to compensate for any tolerances or deviations in the arrangement or running operation of the guide rollers. At least one of the spring steel bands of the guide rail is spring-elastically deflectable in a thickness direction perpendicular to the lengthwise extension of the guide rail. In one embodiment, at least one of the spring steel bands is pre-curved to provide the necessary elastic spring characteristic. In another embodiment, a spacer member is arranged between initially flat spring steel bands to leave elastically deflectable free edge portions of the steel bands protruding beyond the spacer member and the clamping members. The guide rollers are mounted on the guide rail so as to partially pre-stress the elastically deflectable steel bands in the thickness direction.