Sweeper with dual seal filter
First Claim
1. A sweeping machine including a sweeping brush, a hopper having an inlet for receiving debris from said brush, an opening in said hopper, vacuum means for creating an air flow path from said hopper inlet and through said opening, a filter positioned in said opening, a peripheral flexible seal between an inlet side of said filter and said opening, vibratory cleaning means positioned adjacent an outlet side of said filter to impart vibration thereto, closure means enclosing said filter and cleaning means, a peripheral flexible seal between an outlet side of said filter and said closure means, said filter floating between said peripheral flexible seals whereby vibratory cleaning force applied to said filter from said vibratory cleaning means causes vibration of said filter.
2 Assignments
0 Petitions
Accused Products
Abstract
A sweeping machine includes a sweeping brush, a hopper having an inlet for receiving debris from said sweeping brush, an opening in said hopper and a vacuum system for creating an air flow path from the hopper inlet through the opening. There is a filter positioned in the hopper opening and a peripheral flexible seal between the inlet side of the filter and the hopper opening. A vibratory filter cleaner is positioned adjacent the outlet side of the filter to impart vibration thereto. There is a closure which encloses the filter and the filter cleaner and there is a second peripheral flexible seal between the filter outlet side and the closure. The filter is movable between the spaced peripheral seals at its inlet and outlet sides whereby vibratory cleaning force applied by the filter cleaner causes vibration of the filter to provide cleaning thereof.
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Citations
13 Claims
- 1. A sweeping machine including a sweeping brush, a hopper having an inlet for receiving debris from said brush, an opening in said hopper, vacuum means for creating an air flow path from said hopper inlet and through said opening, a filter positioned in said opening, a peripheral flexible seal between an inlet side of said filter and said opening, vibratory cleaning means positioned adjacent an outlet side of said filter to impart vibration thereto, closure means enclosing said filter and cleaning means, a peripheral flexible seal between an outlet side of said filter and said closure means, said filter floating between said peripheral flexible seals whereby vibratory cleaning force applied to said filter from said vibratory cleaning means causes vibration of said filter.
Specification