Inductor devices – With coil capacitance modifying means
Patent
1989-08-10
1991-05-14
Kozma, Thomas J.
Inductor devices
With coil capacitance modifying means
336 83, 336178, 336212, 336233, H01F 1706, H01F 2726
Patent
active
050159828
ABSTRACT:
An ignition coil for developing spark plug firing voltages. The magnetic current for the coil comprises an axially extending core that joins axially spaced annular parts. The core and parts can be formed of iron particles in a binder of electrical insulating material. A primary winding is disposed about the core and a secondary winding is disposed about the primary winding. An axially extending circular part that is formed of magnetic material is positioned to provide air gaps with outer surfaces of said annular parts. The circular part forms a shield that increases the capacitance of the secondary winding. The total stored magnetic energy does not vary substantially with variations in air gap length. The cross-sectional area A of the air gap is large as compared to the length L of the air gap so that the ratio A/L does not vary much with variations in L.
REFERENCES:
patent: 952692 (1910-03-01), Thordarson
patent: 1815380 (1931-07-01), Porter et al.
patent: 2885458 (1959-05-01), Hause
patent: 2904763 (1959-09-01), Harruff
patent: 2962679 (1960-11-01), Stratton
patent: 3235675 (1966-02-01), Blume
patent: 3332049 (1967-07-01), Hisano
patent: 3371301 (1968-02-01), Hisano
patent: 3566202 (1971-02-01), Carr
patent: 3566323 (1971-02-01), Graf et al.
patent: 3750069 (1973-07-01), Renskers
patent: 4032837 (1977-06-01), Panu
patent: 4047138 (1977-09-01), Steigerwald
patent: 4048972 (1977-09-01), Worz
patent: 4424504 (1984-01-01), Mitsui et al.
patent: 4517540 (1985-05-01), McDougal
patent: 4543208 (1985-09-01), Honie et al.
patent: 4601765 (1986-07-01), Soileau et al.
Cruz Jose A.
House Ronnalee
Kellams Roger W.
Skinner Albert A.
General Motors Corporation
Kozma Thomas J.
Meland C. R.
LandOfFree
Ignition coil does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ignition coil, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ignition coil will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1651387