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:
Sep. 20, 1988
Filed:
May. 18, 1987
Nils G Virving, Stockholm, SE;
Sunds Defibrator AB, Stockholm, SE;
Abstract
Method and appparatus for making pulp of grinding goods, such as fibre material, in the grinding zone of a grinding apparatus by pressing it against a grinding surface provided with a pattern extending in the direction of movement of the grinding goods over the grinding surface for desintegration of the grinding goods. Steam generated during the grinding work causes a pressure rise along the grinding surface. The region for the maximum pressure in the grinding zone is established with the aid of measurements of the pressure course in the grinding zone and the pattern is formed in a predetermined region around this pressure center so that braking of the grinding goods will be obtained.