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Motorcycle — Harley-Davidson patent US4775163A (1988)

PatentUS4775163A
TypeUtility patent
Filed1987-07-27
Granted1988-10-04
InventorThomas D. McGowan
SystemFrame & chassis

“A motorcycle has a frame, a front wheel and Y-shaped rockers attached to the axle of the front wheel on either side. Also attached to each rocker is a rigid fork which directly connects the rocker to the frame of the motorcycle and a springed fork which connects the rocker to shock absorbing means…”

Full patent textDownload PDFShop frame & chassis parts

Drawings (3 sheets)

Motorcycle — sheet 1Motorcycle — sheet 2Motorcycle — sheet 3

Parts for this system

28-0158
Oil Tank Frame Cover Rubber Grommet
$10.64
37-9264
Chrome Oil Line to Frame Clamp
$10.64
51-5549
Frame Insert Raw Maltese Design
$10.64
51-0858
Frame Tank Dowel Rear
$10.67

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

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USD299220S
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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.