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:
Jun. 29, 1999
Filed:
Apr. 04, 1998
Weston E Dickerson, Milford, MI (US);
Charles E Burger, Farmington, MI (US);
Hayes Lemmerz International, Inc., Romulus, MI (US);
Abstract
The invention is directed to a rotor having a vented hat section and a method of forming the same. Such a rotor includes a hat section having a central mounting face and a cylindrical shoulder or hat wall extending axially from the mounting face to an annular peripheral section having friction surfaces disposed on opposite sides. A plurality of spaced apart vents are defined in the wall of the hat section. The vented rotor is formed by first casting a rotor to the desired configuration including at least the hat section. The initial casting is formed in such a manner that one or more depressions are provided in the radially inner surface of the wall of the hat section. These depressions do not extend through the wall of the hat section. Then, material is removed in one or more machining steps from the radially outer surface of the wall of the hat section proximate the depressions. Such material is removed to the point that the depressions extend completely through the wall of the hat section to form the vents. Alternatively, the initial casting is formed in such a manner that one or more vents are provided in the hat section wall which extend completely through the hat wall.