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. 04, 1984
Filed:
Jan. 19, 1982
Applicant:
Inventors:
Jean Herbulot, Franconville, FR;
Bernard Jumel, Pierrefitte, FR;
Assignee:
Valeo, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D / ; F16D / ;
U.S. Cl.
CPC ...
1882 / ; 1882 / ; 1921 / ; 1921 / ;
Abstract
A rotatable brake member comprises a plurality of substantially radial ventilation channels, each of which is divided longitudinally into at least two portions which are generally coaxial with a mean longitudinal line of the channel and which have substantially constant cross-sections, these portions having an abrupt discontinuity of cross-section relative to one another, the or each channel defining a single, empty radial passage, the side wall of the or each of these portions being smooth and continuous, and the abrupt discontinuity of cross-section between the portions being provided by a peripheral transverse annular step.