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:
Jan. 29, 1985
Filed:
Nov. 17, 1982
Hans Rauch, Saulgau, DE;
Claas Saulgau GmbH, Saulgau, DE;
Abstract
An arrangement for grinding a chopping cutter of a drum-chopper machine has a grinding tool, a grinding carriage which carries the grinding tool and is reciprocable parallel to an axis of rotation of the chopper drum over a length of the latter, a drive for driving the grinding carriage and including a double-acting cylinder-and-piston unit with a cylinder movable parallel to the axis of a chopper drum of the machine, and a control device for reversing the direction of movement of the cylinder of the cylinder-and-piston unit and including a control valve connected with the cylinder and two abutment members located at opposite sides of the control valve, as considered in the direction of movement of the cylinder and arranged so that, when the control member meets a respective one of the abutment members, the direction of movement of the cylinder is reversed.