Camshaft for internal combustion engines

Details Camshaft for internal combustion engines Camshaft for internal combustion engines

1992-03-16

1993-09-21

Luong, Vinh T.

Machine element or mechanism

Elements

Cams

123 906, 123 9017, 403359, 298881, F16H 5300, F01L 104

Patent

active

052458881

ABSTRACT:
A camshaft for internal combustion engines, the camshaft having a double-pipe shaft portion comprising an outer pipe, an inner pipe, and an intermediate layer therebetween. The intermediate layer is composed of a layer of a thermoplastic liquid crystalline polyester resin that has been injected into a gap between the outer pipe and the inner pipe, by an injection molding machine. The camshaft is lightweight and has excellent vibration-damping properties, and further, has a structure allowing an easy manufacture thereof, and thus is suitable for mass production.

REFERENCES:
patent: 4882825 (1989-11-01), Nakamura
patent: 4977793 (1990-12-01), Husted
patent: 5136887 (1992-08-01), Elrod et al.
SAE Technical Paper 900634 of Ted B. Randall et al. entitled "The Composite Camshaft: Advanced Materials to Meet the Requirements of Today".

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