Invention Grant
US08407891B2 Method for providing a controlled spark plug orientation in an engine structure
有权
在发动机结构中提供受控火花塞取向的方法
- Patent Title: Method for providing a controlled spark plug orientation in an engine structure
- Patent Title (中): 在发动机结构中提供受控火花塞取向的方法
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Application No.: US12251950Application Date: 2008-10-15
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Publication No.: US08407891B2Publication Date: 2013-04-02
- Inventor: Daniel K Owusu , David H. Shea
- Applicant: Daniel K Owusu , David H. Shea
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Agency: Harness, Dickey & Pierce, P.L.C.
- Main IPC: B21K3/00
- IPC: B21K3/00 ; B22D11/126

Abstract:
A spark plug orientation method may include forming a spark plug housing by advancing a tool a first distance in a first axial direction into a spark plug bore to create a spark plug seat using a seat forming portion of the tool. The tool may be displaced a second distance in a second axial direction generally opposite the first axial direction to provide a predetermined axial orientation between the thread forming portion of the tool and the spark plug seat. The spark plug bore may be engaged at a first predetermined rotational position and the tool may be displaced in an orbital motion and in the second axial direction at a predetermined rate to form a threading on the spark plug bore providing a starting point of the threading at a second predetermined rotational position proximate the spark plug seat.
Public/Granted literature
- US20100092255A1 CONTROLLED SPARK PLUG ORIENTATION Public/Granted day:2010-04-15
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