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:
Dec. 31, 1985
Filed:
May. 11, 1984
Gerhard Neumann, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
To avoid venting of a deburring chamber and associated equipment after charge of the chamber with an explosive mixture if a spark plug (3a) has failed to ignite the mixture, a glow ignition block (4) is located in the path of gas communication between a mixing block (3) in which the spark plug is retained, and a glow plug (8) is located to have its glow portion exposed to the combustible gas mixture, preferably in a bypass (9) to a main gas path. A thermal element (12) monitors whether, upon application of an ignition pulse to the spark plug (3a), ignition has occurred by sensing a sharp temperature pulse; upon failure to sense such a temperature pulse, the glow plug is energized for ignition of the combustible mixture thereby. The spark plug may be of the vehicular internal combustion engine type; and the glow plug may, for example, be similar to 'pre-glow' plugs used in vehicular-type Diesel engines.