Gutter broom position-control system
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United States of America Patent
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Oct 10, 2017
Grant Date -
N/A
app pub date -
Apr 14, 2014
filing date -
Apr 14, 2013
priority date (Note) -
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Abstract
A roadway sweeper (10) is provided with a pneumatic ‘lift’ cylinder (LC) connected through linkages to a gutter broom (12) and is pressurized at a operator-selected one of a plurality of air pressures to control the force the gutter broom (12) applies to the surface being swept. In a similar manner, a pneumatic ‘swing-out’ cylinder (PC) that is also pressurized at one of a plurality of operator-selected air pressures to cause the gutter broom (12) to ‘swing-out’ from a fully retracted position toward its fully extended position. A spring element (S), such as one or more helical springs, is connected in parallel with the swing-out cylinder (PC) so that the gutter broom (12) is positioned reliably and repeatedly in response to a user-selected one of many pressure states Pn.
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