US 7,320,166 B2 | ||
Speed sensor encoder wheel and method of making | ||
Chad David Bauer, Fenton, Mich. (US) | ||
Assigned to Freudenberg-NOK General Partnership, Plymouth, Mich. (US) | ||
Filed on Jun. 23, 2004, as Appl. No. 10/874,838. | ||
Prior Publication US 2005/0283968 A1, Dec. 29, 2005 | ||
Int. Cl. B21B 1/46 (2006.01); H01F 7/06 (2006.01) |
U.S. Cl. 29—417 [29/602.1; 29/527.2; 29/527.3; 264/427; 324/166] | 5 Claims |
1. A method of making an encoder for use in a speed sensor, the method comprising:
providing a metal tube;
extruding a material containing ferrite over the metal tube to produce an encoder tube;
cutting the encoder tube to a given length to form an encoder; and
magnetizing the encoder within a magnetic field.
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