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. 20, 1988
Filed:
Aug. 08, 1986
Applicant:
Inventors:
David D Double, Annapolis, MD (US);
Randall P Bright, Bowie, MD (US);
Sean Wise, Millersville, MD (US);
Assignee:
Cemcom Corp., Lanham, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ; C04B / ;
U.S. Cl.
CPC ...
106 97 ; 106 36 ; 106 85 ; 106104 ; 1882 / ; 1921 / ;
Abstract
Friction materials intended to be used as brake shoes, brake pads, and other brake components, comprising a composite in which one or more friction modifiers is embedded in a high strength cement matrix. The matrix material exhibits a flexural strength of at least 1,500 psi, a compressive strength of at least about 15,000 psi and a flexural modulus of about 1.times.10.sup.6 psi.