HYDRAULIC DRIVE SYSTEM FOR A POST DRIVER OF A SKID STEER LOADER
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United States of America Patent
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Issued Date -
Aug 10, 2017
app pub date -
Nov 22, 2016
filing date -
Feb 9, 2016
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Abstract
A hydraulic system for driving a post driver of a skid steer loader. The hydraulic system includes a master cylinder disposed between a valve, such as a 4-way valve, and the driver cylinder of the post driver. The master cylinder effectively provides that hydraulic fluid from the 4-way valve to the hydraulic system of the skid steer loader can flow freely without needing an auxiliary pump and motor to overcome resistance in the return line back to the skid steer loader hydraulic system. By eliminating the restriction in the return line of the driver cylinder, a very fast retraction can be achieved, improving the impact performance of the system.
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