Multi-speed power splitting CVT

Details Multi-speed power splitting CVT Multi-speed power splitting CVT

2006-02-10

2008-03-25

Wright, Dirk (Department: 3681)

Planetary gear transmission systems or components

Nonplanetary variable speed or direction transmission...

Nonplanetary transmission is belt or chain gearing

Reexamination Certificate

active

07347800

ABSTRACT:
A power splitting CVT has a planetary mixer and variator. An input shaft is drivingly connected to a planet carrier. A plurality of planet gears are mounted to the carrier engaging both a sun gear on an inside diameter and a ring gear on an outside diameter. The ring gear is fixed to an output shaft of the CVT. A speed-up gearing drivingly connects the sun gear with a variator input shaft. The variator is disposed between the variator input shaft and a variator output shaft. A speed-down gearing drivingly connects the variator output shaft to the transmission output shaft. One of the speed-down gearing and the speed-up gearing provide a plurality of fixed ratios between the variator output shaft and the transmission output shaft and between the variator input shaft and the sun gear respectively.

REFERENCES:
patent: 3605522 (1971-09-01), Grosseau
patent: 5803858 (1998-09-01), Haka
patent: 5888161 (1999-03-01), McCarrick
patent: 5916053 (1999-06-01), McCarrick
patent: 5931760 (1999-08-01), Beim
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patent: 6447422 (2002-09-01), Haka
patent: 6986725 (2006-01-01), Morscheck
“How to Convert a CVT into a IVT” http://cvt.com.sapo.pt/ivt/ivt.htm Jan. 18, 2005 (date printed).

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