MATERIAL HEATER

• US 3,633,563 A
• Filed: 12/19/1969
• Issued: 01/11/1972
• Est. Priority Date: 12/19/1969
• Status: Expired due to Term

• Current Assignee: Bernard W. Tunney Sr, George E. Osborn
• Original Assignee: Bernard W. Tunney Sr, George E. Osborn
• Inventors: Osborn, George E., Tunney, Bernard W. Sr.
• Primary Examiner(s): Myhre, Charles J.
• Application Number:
  US04/886,457
• Time in Patent Office: 753 Days
• Field of Search: 126/343.5,343.5A 94/42
• US Class Current: 126/343.50A
• CPC Class Codes: E01C 23/06 Devices or arrangements for working the finished surface working freshly laid paving E01C19/42 - E01C19/44, E01C23/02; mining picks E21C35/18; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road

Abstract

A self-feeding hopper for containing heated or heating mixed bituminous or other materials for patching, repairing or resurfacing street pavements, parking lots and other uses where heated materials are required. The hopper is constructed as a part of a mobile chassis and includes spaced inner and outer bottom and sidewalls with the spacing between the inner and outer walls defining heat chamber portions into which heated gases are delivered for heating the inner walls of the hopper. One sidewall of the hopper includes an outlet opening adjacent the inner bottom wall of the hopper and a generally horizontal heated work platform is supported outwardly of the outlet opening for receiving semifluent heated materials thereon flowing outwardly through the outlet opening. The platform is disposed at an elevation within 2 feet of the ground enabling workmen to readily shovel material therefrom to the ground.

Claims

1. A hopper for containing mixed bituminous or other materials for patching pavements, said hopper including a bottom wall and upstanding sidewalls, one of said sidewalls having a lower outlet opening formed therein, means operative to close and open said outlet opening to the outward flow of semiFluent material therethrough, and means operative to heat said bottom and sidewalls, said hopper including a generally horizontally disposed work platform outwardly of said one sidewall onto which heated semifluent material discharged through said outlet opening may flow, a wheeled chassis from which said hopper is supported, said platform being disposed at an elevation less than 2 feet above a surface upon which said chassis rests, said platform comprising an outward extension of said bottom wall, said heating means also including means for heating said platform from beneath, a plurality of upstanding and outstanding gusset plates spaced along said one sidewall on opposite sides of said opening and secured to opposite marginal edge portions of said platform at their lower marginal portions and to the adjacent external surfaces of said hopper disposed alongside said opening, said gusset plates functioning as opposite sidewalls of said platform.

2. The combination of claim 1 wherein said means operative to heat said bottom and sidewalls includes means for heating said walls from the exterior thereof.

3. The combination of claim 1 wherein said bottom and sidewalls include inner and outer wall panels between which heat chambers are defined, said heat chambers being communicated therewith, said means operative to heat said bottom and sidewalls including means operative to deliver heated gases into one of said chambers.

4. The combination of claim 7 wherein said bottom and sidewalls include inner and outer wall panels between which heat chambers are defined, said heat chambers being communicated therewith, said means operative to heat said bottom and sidewalls including means operative to deliver heated gases into one of said chambers, said hopper including a generally horizontally disposed work platform outwardly of said one sidewall onto which heated semifluent material discharged through said outlet opening may flow.

5. The combination of claim 4 wherein said sidewalls include outwardly opening vent openings opening outwardly through the upper marginal portions of the outer wall panels thereof, said one of said heat chambers comprising the bottom wall heat chamber.

6. The combination of claim 1 wherein said bottom and sidewalls include inner and outer wall panels between which heat chambers are defined, said heat chambers being communicated therewith, said means operative to heat said bottom and sidewalls including means operative to deliver heated gases into one of said chambers, said sidewalls including baffles in said sidewall heat chamber defining tortuous passages extending therethrough through which said heated gases may pass.

7. A hopper for containing mixed bituminous or other materials for patching pavements, said hopper including a bottom wall and upstanding sidewalls, one of said sidewalls having a lower outlet opening formed therein, means operative to close and open said outlet opening to the outward flow of semifluent material therethrough, means operative to heat at least some of said walls, said hopper including a generally horizontally disposed work platform projecting outwardly of said one sidewall to which heated semifluent material discharged through said outlet opening may flow, said heating means also including means for heating said platform, a plurality of upstanding and outstanding gusset plates spaced along said one sidewall on opposite sides of said opening and secured to opposite marginal edge portions of said platform at their lower marginal portions and to the adjacent external surfaces of said hopper disposed alongside of said opening, said gusset plates functioning as opposite sidewalls of said platform.

8. The combination of claim 7, including a wheeled chassis from which said hopper is supported, said platform being disposed at an elevation less than 2 feet above a surface upon which said chassis rests.

9. The combination of claim 7 wherein said heating means also includes means for heating saiD platform from beneath.