Patent ID: 8544434
Filing Date: 2013-10-01
Classification: F01L

Abstract:
1. A variable valve timing mechanism comprising: a housing having a plurality of fluid chambers, one of said plurality of fluid chambers having a lock bore; a rotor rotatably supported within said housing, said rotor having a plurality of radially extending vanes, each of said plurality of vanes extending into one of said plurality of fluid chambers to define an advanced fluid chamber and a retarded fluid chamber, said rotor including a pin bore in one of said plurality of vanes; and a lock pin having a shank section and an insertion section, said lock pin being slidably received within said pin bore between an unlocked position and a locked position, said insertion section having a segmented spherical shape having a first base and an opposite second base, said first base and said second base being spaced apart and parallel, said segmented spherical shape having a portion between said first base and said second base having a diameter greater than a diameter of said first base and said second base.