Electrically released parking brake for zero turn radius mower
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United States of America Patent
Stats
-
Mar 30, 2010
Grant Date -
Aug 14, 2008
app pub date -
Feb 9, 2007
filing date -
Feb 9, 2007
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The parking brakes at the drive wheels of a zero turning radius mower are automatically set when a pair of drive levers used for determining speed, steering and forward or reverse travel are placed in their neutral positions and swung outwardly to widespread, operator dismount positions. When the drive levers are widespread, switches associated with a control circuit are opened, allowing air cylinders to immediately exhaust pressurized air so that tension springs may actuate the brake assemblies to set the brakes. When the drive levers are returned to their operating modes and the ignition is turned on, the control switches are closed, energizing the control circuit to pressurize the air cylinders and release the brakes against the bias of the tension springs.
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Cited Art Landscape
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