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:
Apr. 17, 2012
Filed:
Nov. 22, 2007
Hiroshi Ohashi, Aichi, JP;
Kiyoshi Inoue, Aichi, JP;
Masato Nagasaki, Seto, JP;
Yasuhiro Hori, Kasugai, JP;
Hiroshi Ohashi, Aichi, JP;
Kiyoshi Inoue, Aichi, JP;
Masato Nagasaki, Seto, JP;
Yasuhiro Hori, Kasugai, JP;
NGK Spark Plug Co., Ltd., Aichi, JP;
Abstract
In an apparatus for producing a spark plug, approach driving conditions are calculated on the basis of a specified thrust feeding amount so that, while a temporal overlap occurs between a time period of feed-driving toward a rolling position Pof a workpiece supporting portion () and an approach driving time period, in a circumferential direction of a workpiece W, a positional relationship between the starting position of the threaded portion which is rolling-formed, and the joining position of the ground electrode to the tip end face of the workpiece W is constant. The operation of an approach driving portion is controlled on the basis of the calculated approach driving conditions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile