Park brake and control lever interlock for ZTR vehicle

Details Park brake and control lever interlock for ZTR vehicle Park brake and control lever interlock for ZTR vehicle

2006-01-10

2008-11-18

Lewis, Tisha D (Department: 3681)

192 clutches and power-stop control

Transmission and brake

Motor vehicle

C056S011300

Reexamination Certificate

active

07451865

ABSTRACT:
A ZTR lawnmower having first and second drive wheels and first and second control levers to control the direction and speed of rotation of the first and second drive wheels. The lawnmower further includes a park brake system operatively interconnected with at least one of the drive wheels, and an interlock mechanism interfacing with the parking system. The park brake interlock mechanism includes a parking brake handle movable between an engaged position and a disengaged position to cause the park brake system to respectively resist and not resist rotation of the at least one drive wheel. The interlock mechanism interfaces with the park brake handle and the control levers such that when the first and second control levers are in the neutral position, the interlock mechanism permits the parking brake handle to be placed in the engaged position, and when the first and/or second control levers are not in the neutral position, the interlock mechanism prevents the parking brake handle from being placed in the engaged position.

REFERENCES:
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patent: 6550563 (2003-04-01), Velke et al.
patent: 6729115 (2004-05-01), Bartel
patent: 6739116 (2004-05-01), Stover et al.
patent: 6912831 (2005-07-01), Velke et al.

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