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. 06, 2011
Filed:
Feb. 05, 2010
Applicants:
David Francis Biggin, Burlington, WI (US);
Walter Ray Marks, Greendale, WI (US);
Inventors:
David Francis Biggin, Burlington, WI (US);
Walter Ray Marks, Greendale, WI (US);
Assignee:
Metso Minerals Industries, Inc., Waukesha, WI (US);
Primary Examiner:
Int. Cl.
CPC ...
B02C 2/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A spider for use with a gyratory crusher. The spider includes spider arms each formed from two spaced flanges joined by a connecting web to define an open channel having an open top end. The configuration of the spider arms increases manufacturability and provides the required strength and rigidity for the spider. The channel formed in each spider arm is covered by a spider arm shield to reduce abrasive wear to the spider arm.