Invention Grant
- Patent Title: Camshaft and camshaft manufacturing method
- Patent Title (中): 凸轮轴和凸轮轴制造方法
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Application No.: US12268736Application Date: 2008-11-11
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Publication No.: US07938091B2Publication Date: 2011-05-10
- Inventor: Munehiro Sagata
- Applicant: Munehiro Sagata
- Applicant Address: JP Nagoya-shi
- Assignee: Aichi Machine Industry Co., Ltd.
- Current Assignee: Aichi Machine Industry Co., Ltd.
- Current Assignee Address: JP Nagoya-shi
- Agency: Global IP Counselors, LLP
- Priority: JP2008-003743 20080110
- Main IPC: F01L1/02
- IPC: F01L1/02
Abstract:
A cam lobe of a camshaft has a base circle portion and a lifting lobe portion. A camshaft journal of the camshaft has first and second bearing portions that bear reaction forces from the base circle portion and the lifting lobe portion, respectively. The first bearing portion has an axial width smaller than that of the second bearing portion with at least a portion of an axial end surface of the first bearing portion facing the cam lobe being disposed away from the cam lobe relative to an axial end surface of the second bearing portion. The base circle portion has an axial width smaller than that of the lifting lobe portion with at least a portion of an axial end surface of the base circle portion facing the camshaft journal being disposed away from the camshaft journal relative to an axial end surface of the lifting lobe portion.
Public/Granted literature
- US20090178636A1 CAMSHAFT AND CAMSHAFT MANUFACTURING METHOD Public/Granted day:2009-07-16
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