Crankcase structure for an overhead-camshaft internal...

Details Crankcase structure for an overhead-camshaft internal... Crankcase structure for an overhead-camshaft internal...

2009-02-27

2011-11-08

Eshete, Zelalem (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Camshaft drive means

C123S1950HC

Reexamination Certificate

active

08051819

ABSTRACT:
An overhead-camshaft internal combustion engine having an outer wall of a crankcase provided adjacent a crankshaft, with a spiral-surfaced opening through which the crankshaft is passed. The outer crankcase wall is integrally provided with a loop guide engaging recess formed thereon. The loop guide engaging recess supports a base end portion of a loop guide for guiding an endless chain. A loop-retaining member for preventing the timing endless chain from dropping is arranged at a position on the lower side of a loop drive sprocket integrally formed at an end portion of the crankshaft.

REFERENCES:
patent: 2004/0149250 (2004-08-01), Gschwindt et al.
patent: 2006-105132 (2006-04-01), None

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