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US 7,024,719 B2Granted
Sweeper drag shoe
AssigneeTennant Company
InventorMichael S. Wilmo
Life of this patent
Estimating the term…
Abstract
A sweeper drag shoe used with a rotary broom in sweeping, whereby escaping debris from under a contact skid is recaptured. The sweeper drag shoe contains a deflection plate that redirects bristle tip movement inwardly to allow the broom to recapture debris which escapes during normal operation. The sweeper drag shoe also includes an angled wedge for concentrating outer bristles of the broom into a rotating barrier to prevent debris migration to the end of the broom.
Claims16
A sweeper drag shoe comprising:
- a. a substantially right-angle member formed of a horizontally oriented elongated planar member having an upper surface, a lower surface, and first and second ends and a vertically oriented elongated planar member having a top edge, an inner surface, an outer surface, and first and second ends;
- b. an elongated skirt member extending along the length of said inner surface of said vertically oriented elongated planar member from said first end thereof to said second end thereof and projecting outwardly away from said inner surface of said vertically oriented elongated planar member, said elongated skirt member having a horizontally oriented planar surface aligned with said lower surface of said horizontally oriented elongated planar member and a slanted surface extending from said horizontally oriented planar surface to a location on said inner surface of said vertically oriented elongated planar member below said top edge thereof;
- and,
- c. a vertically oriented plate member joined to said second end of said horizontally oriented elongated planar member, said vertically oriented plate member forming an obtuse angle with said outer surface of said vertically oriented elongated planar member and abutting said elongated skirt member at said second end of said vertically oriented elongated planar member.
1 more element
A sweeper drag shoe comprising:
- a. an elongated, planar contact skid having an upper surface, a lower surface, a forward end, and a rearward end, said rearward end including a slanting edge;
- b. an elongated, planar attachment bar having a top edge, an inner surface, an outer surface, a forward end, and a rearward end;
- c. said contact skid extending perpendicularly to said attachment bar along the length of said attachment bar and being joined to said attachment bar along the length of said attachment bar from said forward end of said attachment bar to said rearward end of said attachment bar in such a manner that said upper surface of said contact skid together with said outer surface of said attachment bar form a right angle inside corner and said slanting edge of said rearward end of said contact skid extends beyond said rearward end of said attachment bar;
- d. an angled skirt extending along said inner surface of said attachment bar from said forward end of said attachment bar to said rearward end of said attachment bar, said angled skirt having a bottom surface aligned with said lower surface of said contact skid and having a surface slanting from said bottom surface toward said top edge of said attachment bar and meeting said inner surface of said attachment bar below said top edge of said attachment bar;
- and,
- e. a deflection plate attached to said contact skid along said slanting edge of said rearward end of said contact skid, said deflection plate meeting said angled skirt at an angle.
3 more elements
A sweeper drag shoe comprising:
- a. a contact skid for traveling along a roadway, said contact skid having a planar lower surface for facing the surface of the roadway, an upper surface, a forward end, and a rearward end;
- b. an attachment bar joined to said contact skid and forming a right angle with said contact skid, said attachment bar projecting upwardly with respect to said upper surface of said contact skid;
- c. an angled skirt extending along said attachment bar and having a planar bottom surface aligned with said planar lower surface of said contact skid and a slanting top surface;
- and,
- d. a deflection plate carried by said contact skid at said rearward end of said contact skid, said deflection plate meeting said angled skirt at an angle.
2 more elements
Dependencies are inferred from the claim text.