The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 10, 2017
Filed:
Apr. 14, 2014
Edward B. Stell, New Market, AL (US);
Dale D. Glubrecht, Madison, AL (US);
Edward B. Stell, New Market, AL (US);
Dale D. Glubrecht, Madison, AL (US);
Schwarze Industries, Inc., Huntsville, AL (US);
Abstract
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 ‘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 () is positioned reliably and repeatedly in response to a user-selected one of many pressure states P.