Charles W Moyer

US Patent:

49806637, Dec 25, 1990

Filed:

Dec 28, 1989

Appl. No.:

7/458035

Inventors:

Charles R. Moyer - Harleysville PA

Assignee:

Ford Motor Company - Dearborn MI

International Classification:

H03J 106
H01F 2104

US Classification:

334 8

Abstract:

The inductance value of air-core coils are adjusted using automated methods and inexpensive, noncomplicated apparatus. Adjusting tools are provided which displace coil turns in a linear motion with respect to the coil centerline. Specifically, the coil turns can be displaced by sliding perpendicularly to the coil centerline or by rotating a group of coils in order to modify the coil inductance. The adjusting tools used and the method of coil-turn displacement allow the automated method to reincrease the inductance of a coil in the event that displacement causes an over-decrease of inductance.