US 7,475,871 B2
Start assist device for a rotary carburetor
Hitoshi Terakado, Sendai (Japan); and Keita Tezuka, Shibata-Gun (Japan)
Assigned to Walbro Engine Management, L.L.C., Tucson, Ariz. (US)
Filed on May 17, 2006, as Appl. No. 11/435,537.
Claims priority of application No. 2005-163981 (JP), filed on Jun. 03, 2005.
Prior Publication US 2006/0273471 A1, Dec. 07, 2006
Int. Cl. F02M 9/08 (2006.01)
U.S. Cl. 261—44.6  [261/44.8] 20 Claims
OG exemplary drawing
 
1. A start assist device of a rotary throttle valve carburetor having a body and a throttle valve carried by the body for rotation about and movement along an axis, comprising:
an operating member supported by the body and constructed and arranged to move and rotate about an axis; and
a plurality of start features at least in-part carried by and spaced circumferentially about the operating member for selectively contacting the throttle valve, each one of the plurality of start features being spaced at a different distance from the axis of the operating member.