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:
Jul. 27, 2004
Filed:
Nov. 22, 2002
Johan Kihlberg, Bengtsfors, SE;
Lars-Olof Ottosson, Tösse, SE;
Sem AB, Åmål, SE;
Abstract
A circuit to achieve a large ignition advance, limitation of speed of revolutions and to prevent backfiring and reverse direction running in a magnetic ignition system comprises a flywheel with two poles and a three-legged iron core. An ignition transformer (L /L ), a triggering coil (L ) and a charging coil (L ) are arranged on the legs of the core. The triggering coil is arranged either on the first or second leg in the direction of rotation of the flywheel, and the charging coil on the final leg. A time-constant circuit (an RC net) and a control switch (T ) are arranged between the charging coil and a main switch (T ) that opens/blocks triggering pulses whereby limitation in the speed of revolutions is achieved by means of adjustment of the time-constant circuit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile