Schwarze Industries, Inc.

Dale D Glubrecht

Felix W Crunk, Iii

Brian Giles

Sean H Howley

Jared N Berke

Ronald J Schrimsher

John D Madderra

Edward B Stell

Iii Crunk Felix W

Felix W Iii Crunk

A roadway or pavement sweeper with multiple sweeping modes for the removal of debris from a swept surface may, in some embodiments, include a sweeper vehicle having a pair of side-brooms independently movable between a retracted and extended position for sweeping debris into an area therebetween and at least one material-transfer broom to sweep a portion of the debris accumulated between the side-brooms as the vehicle moves in its direction of travel. A fan-driven suction-inlet may be provided at or adjacent each side of the vehicle. The at least one material-transfer broom may rotate in a first or other direction to transfer debris for entrainment into a selected suction-inlet for transfer to a debris hopper. Other embodiments are also described.

Roadway sweeper with multiple sweeping modes

A roadway sweeper () is provided with a pneumatic 'lift' cylinder (LC) connected through linkages to a gutter broom () and is pressurized at a operator-selected one of a plurality of air pressures to control the force the gutter broom () 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 () to &#x2018;swing-out&#x2019; 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 () is positioned reliably and repeatedly in response to a user-selected one of many pressure states P.

Gutter broom position-control system

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Madison, AL, United States of America

Dale D Glubrecht