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:
Dec. 11, 2001
Filed:
Apr. 20, 2000
Urban Thysell, Ystad, SE;
Svedala-Arbra AB, Svedala, SE;
Abstract
A gyratory crusher comprises a body and an annular outer shell, which is fixedly connected to the body about an essentially vertical center axis. A shaft member is arranged radially inside the outer shell to perform, during crushing, a swinging movement about the center axis. A crushing chamber forms between the outer shell and an annual inner shell arranged on the shaft member. A piston member is displaceable along the center axis and is arranged in a cylinder member belonging to the body. The upper end of the piston member supports, via an intermediate thrust bearing, a lower end of the shaft member. A transport duct for supplying to the thrust bearing a medium promoting the bearing function extends through the piston member and is defined upstream of the piston member by a transfer means. At least a part of the transfer means is displaceable relative to the piston member and at least a part is displaceable relative to the cylinder member.