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:
Jul. 21, 1992
Filed:
Apr. 24, 1991
Applicant:
Inventor:
C Dale Christie, Naperville, IL (US);
Assignee:
Amsted Industries, Inc., Chicago, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29B / ; B29B / ; B29C / ; B29L / ;
U.S. Cl.
CPC ...
264122 ; 264236 ; 264259 ; 264319 ; 264347 ; 264349 ; 523156 ; 523158 ;
Abstract
A railroad brake shoe friction composition is prepared in the absence of a volatile solvent by first preparing a fluid paste bonding matrix containing an uncured rubber compound, a blend of highly polymerized cashew nut shell liquid resin with a reactive diluent and high surface area inorganic fillers, and thereafter adding other fillers and reinforcing fibers.