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Loop driven vehicles — Harley-Davidson patent US4066142A (1978)

PatentUS4066142A
TypeUtility patent
Filed1976-08-06
Granted1978-01-03
InventorBernard Hooper
SystemPrimary & final drive

“A loop driven vehicle such as a motor cycle has a pivoted fork which supports the rear wheel mounted on the engine unit, and the engine unit mounted at its rear on the frame of the vehicle by a mounting which permits angular movement of the engine unit about a second axis parallel to the axis of…”

Full patent textDownload PDFShop primary & final drive parts

Drawings (1 sheet)

Loop driven vehicles — sheet 1

Parts for this system

14-6909
Ultima Clutch Pulley Cover Oil Seal
$5.40
20-8858
Ultima Belt Drive Outer Plate Support Spacer
$5.52
37-9892
Ultima 6-Speed RSD Tranmission Pulley Cover Set Screw
$6.35
20-8890
Ultima 2" Bagger Belt Drive Wave Washer
$6.35

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.