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Chain drive of a reciprocating-piston internal combustion engine — Harley-Davidson patent US4553509A (1985)

PatentUS4553509A
TypeUtility patent
Filed1984-07-13
Granted1985-11-19
InventorHans Mezger
SystemEngine

“The chain drive of a reciprocating-piston internal combustion engine is tensioned on the loose strand by a double-armed, rotatably mounted tension bar cooperating with a chain tensioner. A sliding bar bears against the driving strand. A similar base member is used for the tensioning bar and the…”

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Drawings (1 sheet)

Chain drive of a reciprocating-piston internal combustion engine — sheet 1

Parts for this system

32-0064
Magneto to Crankcase Oil Seal Ring and Gasket Kit
$6.35
14-0555
Rear Caliper Piston O-Ring
$10.64
15-1380
Rear Master Cylinder Gasket Kit
$10.64
23-0825
Handlebar Master Cylinder Piston Cup
$10.64

Check fitment first — add your bike and we flag what fits.

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Drawing from the US patent record (via Google Patents). A patent shows the invention as filed, not necessarily the production part on your motorcycle — confirm fitment for your model and year. Independent aftermarket retailer, not affiliated with Harley-Davidson, Inc.