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:
Aug. 30, 1983
Filed:
Sep. 27, 1982
Jiri Podrapsky, Rosstal, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
To prevent reverse-direction operation of an internal combustion (IC) engine to which the ignition system is connected which, possibly, may lead to dangerous conditions if the IC engine is used, for example in a chain saw, lawn mower, or the like, a diode (35) is connected across a second, ignition instant modifying R/C circuit (34, 33) in the control network (29) of the magneto ignition system, which includes a first R/C circuit (30, 31) to provide for immediate conduction of a control transistor (27) and hence blocking of a controlled ignition transistor (21) and disconnection of the ignition system in case of reverse rotation. This system is a further development of the basic ignition system described in U.S. Pat. No. 4,188,929, to which reference is made.