Sweeping machine with multiple position front flap

• US 5,991,953 A
• Filed: 08/25/1998
• Issued: 11/30/1999
• Est. Priority Date: 08/25/1998
• Status: Expired due to Term

• Current Assignee: Tennant Company
• Original Assignee: Tennant Company
• Inventors: Basham, Michael T., D'Costa, Joseph F., Durenberger, Donald F.
• Primary Examiner(s): Chin, Randall E.
• Application Number:
  US09/139,301
• Time in Patent Office: 462 Days
• Field of Search: 15/83-86, 15/79.2
• US Class Current: 15/83
• CPC Class Codes: E01H 1/045 the loading means being a rotating brush with horizontal axis E01H1/042 takes precedence

Abstract

A sweeping machine includes a chassis with wheels supporting the chassis on a surface to be swept. There is a brush mounted on the chassis for rotation in a direction to throw debris over the brush and into a debris hopper mounted on the chassis behind the brush. A flap assembly is positioned in front of the brush and closely adjacent thereto. The flap assembly has a flexible lip which is in contact with a surface being swept during its normal position. There is an operator control and a connection between the operator control and the flap assembly for raising and lowering the flap assembly between the normal position in which the flexible lip is in contact with a surface being swept, a first raised position in which the flexible lip has been raised substantially vertically a small distance above the surface being swept, and a second raised position in which the flap assembly has been raised and pivoted in a forward direction relative to the first position to permit debris to pass under the flap assembly to an area about the rotatable brush.

Claims

1. A sweeping machine including a chassis, wheels for supporting the chassis, a brush mounted on the chassis for rotation in a direction to throw debris over the brush and into a debris hopper mounted on the chassis behind the brush,

a flap assembly positioned in front of the brush and closely adjacent thereto, said flap assembly having a flexible lip which is in contact with a surface being swept, an operator control and a connection between said operator control and said flap assembly for raising and lowering said flap assembly between a normal position in which said flexible lip is in contact with the surface being swept, a first raised position in which the flexible lip has been raised substantially vertically a small distance above the surface being swept, and a second raised position in which said flap assembly has been both raised and pivoted in a forward direction relative to said first raised position to permit debris to pass under said flap assembly to an area about said rotatable brush.

2. The sweeping machine of claim 1 wherein said operator control includes a foot pedal.

3. The sweeping machine of claim 1 wherein said flap assembly includes a front bracket and a rear bracket pivotally connected thereto, said flexible lip being attached to said rear bracket.

4. The sweeping machine of claim 3 including a link pivotally attached to said operator control and pivotally attached to said rear bracket.

5. The sweeping machine of claim 4 wherein said front bracket is pivotally attached to a portion of said sweeping machine chassis.

6. The sweeping machine of claim 5 including a spring connected between said front bracket and said rear bracket and normally urging said front and rear brackets toward a position in which said flexible lip is substantially vertical.

7. The sweeping machine of claim 5 wherein said control member is a foot pedal, pivotally mounted on said chassis, with one end of said foot pedal being pivotally connected to said link.

8. The sweeping machine of claim 7 wherein said foot pedal is pivotally mounted, generally intermediate its opposite ends, to said chassis, with one end of said foot pedal being pivotally connected to said link, and the other end of said foot pedal having a foot receiving portion.

9. The sweeping machine of claim 5 including stop means on said front bracket and said chassis limiting vertical movement of said flap assembly relative to said chassis.

10. The sweeping machine of claim 9 wherein said stop means includes a pin mounted on said chassis and an opening on said front bracket, with said opening moving relative to said pin as said front bracket pivots relative to said chassis.