Road marking apparatus

• US 4,802,788 A
• Filed: 01/13/1988
• Issued: 02/07/1989
• Est. Priority Date: 01/13/1988
• Status: Expired due to Fees

• Current Assignee: Stimsonite Corp. (Avery Dennison Corporation)
• Original Assignee: Pave-Mark Corporation
• Inventors: Smith, Martin A.
• Primary Examiner(s): Massie, Jerome W.
• Assistant Examiner(s): SMITH, MATTHEW J
• Application Number:
  US07/143,369
• Time in Patent Office: 391 Days
• Field of Search: 404/93, 404/94, 404/98, 404/104, 404/105, 404/108, 404/110, 404/111, 118/413, 118/415, 239/455, 239/456, 222/502
• US Class Current: 404/94
• CPC Class Codes: E01C 23/24 by pouring

Abstract

A road marking apparatus has a hopper mounted upon a pair of side runners that straddle an outlet in the bottom of the hopper. A doctor blade is mounted for reciprocal vertical movement in sliding contact with the outside of a rear wall of the hopper adjacent the hopper outlet between the runners. A floor gate is mounted for reciprocal horizontal movement into and out of contact with a bottom edge of the hopper rear wall and the doctor blade for opening and closing the hopper outlet.

Claims

1. Road marking apparatus comprising a pair of side runners;

a hopper mounted upon said pair of side runers in which a fluid marking material may be held, said hopper having front and rear walls joined by side walls with the bottom of said rear wall defining a boundary of an outlet through which fluid marking material may flow out of the hopper and onto the surface of a road between said side runners;

a doctor blade means mounted for generally vertical reciprocal movement in sliding contact with the outside of said hopper rear wall adjacent said hopper outlet for varying the thickness of marking material applied to a road surface; and

a floor gate mounted for generally horizontal reciprocal movement into and out of sealing engagement with a bottom edge of said hopper rear wall and a surface of the doctor blade facing the floor gate leading edge in closing and opening said hopper outlet.

2. The road marking aparatus of claim 1 wherein said floor gate is also mounted for reciprocal movement into and out of sealing engagement with said doctor blade.

3. Road marking apparatus comprising a hopper having an inlet in an upper portion thereof and a wall having a bottom edge that partially defines an outlet in a lower portion thereof;

a pair of runners mounted to the bottom of said hopper straddling said hopper outlet;

a doctor blade mounted for generally vertical reciprocal movement between said runners in sliding contact with an outer surface of said hopper wall adjacent said bottom edge; and

a floor gate mounted for reciprocal movement into and out of sealing contact with said doctor blade and said bottom edge for closing and at least partially opening said hopper outlet.

4. The road marking apparatus of claim 3 wherein said floor gate is mounted for movement into and out of sliding contact with said hopper wall bottom edge.