PAVEMENT MATERIAL APPLYING APPARATUS

• US 3,771,893 A
• Filed: 04/15/1971
• Issued: 11/13/1973
• Est. Priority Date: 04/15/1971
• Status: Expired due to Term

• Current Assignee: Orville L. Miller
• Original Assignee: Orville L. Miller
• Inventors: Miller, Orville L.
• Primary Examiner(s): Byers, Jr., Nile C.
• Application Number:
  US05/134,137
• Time in Patent Office: 943 Days
• Field of Search: 94/46,44 222/177,414 239/668
• US Class Current: 404/101
• CPC Class Codes: B01F 33/502 Vehicle-mounted mixing devices
• CPC Class Codes: E01C 19/202 solely rotating, e.g. discharging and spreading drums
• CPC Class Codes: E01C 19/21 for simultaneously but separately applying liquid material and granular or pulverulent material, e.g. bitumen and grit, with or without spreading with rolling E01C19/4813; for filling grooves and gritting the filling
• CPC Class Codes: E01C 19/45 Portable apparatus for preparing, or for preparing and applying to the road, compound liquid binders, e.g. emulsified bitumen, fluxed asphalt applying only E01C19/16
• CPC Class Codes: E01C 7/356 with exclusively synthetic resin as a binder; Aggregate, fillers or other additives for application on or in the surface of toppings having exclusively synthetic resin as binder

Abstract

A vehicle having a resin blending and spraying assembly and an aggregate spreader assembly mounted thereon. The two assemblies are operated simultaneously and located so that aggregate is deposited on a resin coating applied on the pavement by spray means. The blending and spraying system includes a static and dynamic mixing means for blending multi-component resin compositions and also a novel resin flow and recycling arrangement. The aggregate spreader assembly is of lightweight construction and includes a feed roll which is arranged to assume a minimum of the weight of the aggregate 1n the aggregate spreader hopper.

Claims

1. In a vehicle having a system for applying a resin coating and a system for simultaneously spreading aggregate on a pavement surface coated with a resin, said aggregate spreader system comprising a storage hopper, a spreader hopper, means to convey aggregate from said storage hopper to said spreader hopper, a rotatable feed roller, said spreader hopper including a fixed slope sheet on which said aggregate is deposited from said conveyor means, said fixed slope sheet having a terminal edge substantially in contact with the periphery of said rotatable roller, a sloping gate sheet having a terminal edge adjacent said slope sheet, means mounting said gate sheet for movement toward and away from said slope sheet to selectively space said terminal edge from said slope sheet to provide a first control means, and means further mounting said feed gate for turning movement about an axis parallel to the longitudinal axis of said feed roller in a selective angular position to provide a second control means wherein said terminal edge of said gate sheet is maintained a selective distance from the periphery of said rotatable roller, said gate sheet substantially covering the upper surface of said roller thereby to shield the feed roller from the weight of the aggregate in the spreader hopper and permit the free flow of aggregate as it passes through said feed gate to said roller.

2. The invention as defined in claim 1 wherein said feed roller comprises a hollow cylinder having an outer surface formed with an open mesh material.

3. The invention as defined in claim 2 wherein said cylinder is made from aluminum.

4. The device according to claim 1 wherein the slope sheet lies in a radial plane defined by the radius of the roller at an angle of from about 30* to 45* from horizontal, and the terminal end of the gate sheet is spaced from the slope sheet to provide a feed gate opening, and the terminal end of the gate sheet is spaced from the periphery of the feed roll to provide a feed gap opening relative to the feed roll whereby the control action of said feed control means occurs in conjunction with the controlled rotation of the feed roll.