Valve drive mechanism in an internal combustion engine

Details Valve drive mechanism in an internal combustion engine Valve drive mechanism in an internal combustion engine

2007-09-04

2007-09-04

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Camshaft drive means

C123S1950AC

Reexamination Certificate

active

11274035

ABSTRACT:
A valve drive mechanism is configured for an internal combustion engine that includes an outer body formed, at least in part, from a crankcase and a cylinder that protrudes from the crankcase. The valve drive mechanism comprises a drive gear that is mounted to a crankshaft supported on the crankcase. A shaft is supported for rotation by a bearing. A driven gear is mounted to the shaft. The driven gear is configured to mesh with the drive gear. A drive pulley is mounted to the shaft. A driven pulley is mounted to a camshaft supported on the cylinder. A transmitter member extends between the drive pulley and the driven pulley. A bracket, which is a separate component from the engine outer body, is configured to be mounted to the engine outer body. The bracket is configured to support the bearing and the rotating shaft. The bracket, the bearing, the rotating shaft, the driven gear, the drive pulley and the bracket are assembled together as a unit that can be mounted to the outer body.

REFERENCES:
patent: 6213072 (2001-04-01), Sayama et al.
patent: 2001-073729 (2001-03-01), None

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