Ignition coil for use in engine and engine having plastic cylinder head cover

Patent 6571784 Issued on June 3, 2003. Estimated Expiration Date:

October 23, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

2131483

Ignition coil
Patent #: 4514712
Issued on: 04/30/1985
Inventor: McDougal

Electromagnetic coil and manufacturing apparatus for the same
Patent #: 5963118
Issued on: 10/05/1999
Inventor: Kawano, et al.

Slant winding electromagnetic coil and ignition coil for internal combustion engine using same
Patent #: 6060973
Issued on: 05/09/2000
Inventor: Kawano, et al.

Ignition coil for use in internal combustion engine
Patent #: 6213109
Issued on: 04/10/2001
Inventor: Satoo, et al.

Ignition coil for internal combustion engine
Patent #: 6343595
Issued on: 02/05/2002
Inventor: Nakabayashi, et al.

Ignition coil device for engine Patent #: 6386189
Issued on: 05/14/2002
Inventor: Shimada, et al.

Inventors

Assignee

Application

No. 983093 filed on 10/23/2001

US Classes:

123/634, Having a specific ignition coil336/96Potted type

Examiners

Primary: Gimie, Mahmoud

Attorney, Agent or Firm

Crowell & Moring LLP

Foreign Patent References

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International Class

H01F 027/02

Foreign Application Priority Data

1997-05-23 JP

Abstract

An individual ignition type ignition coil is adopted to an engine having a plastic head cover. A secondary coil is positioned at an inner side of a primary coil and between a secondary bobbin and a center core a soft epoxy resin is filled up. The soft epoxy resin hash a dent according t a compression molding and has a glass transition point Tg which satisfies a specified condition. The secondary bobbin is formed by PPS and the primary bobbin is set to the primary coli at outer side of the secondary assembling body and under an assembling condition the winding is carried out.