Title: Centrifugal engine clutch of walk behind mower
Application Number: 200510002933 Application Date: 2005.01.26
Publication Number: 1698410 Publication Date: 2005.11.23
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: A01D34/84;A01D69/00;A01D69/08
Applicant(s) Name: Textron Inc. Address:
Inventor(s) Name: Derby V. Harry L.
Attorney & Agent: wang qi song zhiqiang
Abstract:
    A walk-behind greens mower (10) having a mobile structure and a ground engaging traction member (36) rotatably coupled to the mobile structure for imparting traction movement to the mobile structure for movement on the ground. An internal combustion engine (32) is supported on the mobile structure and outputs a driving force at an output shaft (48). A bed knife is supported by the mobile structure having a cutting edge that cooperates with a grass cutting reel (18) rotatably supported on the mobile structure. The grass cutting reel includes cutting blades (20) being in grass cutting relationship with the bed knife. A drive system (38) is operably coupled between the output shaft (48) and at least one of the ground engaging traction member (36) and the grass cutting reel (18) for transmitting the driving force thereto. The drive system (38) includes a centrifugal clutch (60) operably coupled with the output shaft (48). The centrifugal clutch (60) prevents the driving force from being transmitted to the ground engaging traction member (36) or grass cutting reel (18) until a predetermined rotational speed of output shaft (48) is achieved, thereby eliminating the need for complicated engagement systems.
Time: 8