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:
Nov. 16, 2004
Filed:
Apr. 04, 2003
Applicant:
Inventors:
Hans-Joerg Lipp, Farmington Hills, MI (US);
Simon Schmittinger, Renningen, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01T 1/300 ;
U.S. Cl.
CPC ...
H01T 1/300 ;
Abstract
A spark plug includes a shell on which a threaded shank having a thread and a tool attachment for installation in an internal combustion engine are situated, and an assembly shank of the shell running between the threaded shank and the tool attachment. The spark plug is dimensioned in such a way that the ratio of the sum of the threaded shank length and the assembly shank length to the sum of the assembly shank diameter and the thread diameter is between 0.95 and 1.55.