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. 17, 2015
Filed:
Jan. 24, 2012
Wolfgang Block, Wermelskirchen, DE;
Guenther Hofrichter, Velbert, DE;
Wolfgang Block, Wermelskirchen, DE;
Guenther Hofrichter, Velbert, DE;
TENTE GmbH & Co. KG, Wermelskirchen, DE;
Abstract
An additional roller has a rigid frame, with a drivable wheel which is mounted in the frame and has an axle. The wheel together with the frame can be raised or lowered by pivoting relative to a chassis, on which the additional roller is to be mounted. A compression spring is coupled rotatably at one end to the chassis, in order, in the lowered position, to load the wheel in respect of ground contact. A transverse connection connects two frame parts in the direction of an axle of the wheel. The compression spring is coupled at the other end to the transverse connection. The compression spring together with the frame pivots about the chassis-mounted pivot point during raising and lowering of the wheel.