Road structure – process – or apparatus – Apparatus – Material distribution means
Patent
1992-09-25
1995-05-30
Husar, John
Road structure, process, or apparatus
Apparatus
Material distribution means
404107, 404108, 404111, 366 22, E01C 2302
Patent
active
054196540
ABSTRACT:
A motor driven wheeled road patching vehicle includes a gravel hopper and a tank of heated asphalt. A gate assembly is adjusted to control gravel flow into a pressurized hose. A telescoping tube assembly extendable between a maximum and a minimum overall length for patching operations and compactness when not in use has debris air gaps to facilitate, by venturi effect, debris clearance. Telescoping elements of increasing diameter are further from the inlet end of the tube assembly to reduce wearing. An elbow couples the telescoping tube outlet to a mixing head, and has a hollow collector box for accumulating gravel which erodes the outside elbow portion, the collected material serving to prevent further wearing. The tank is heated by thermostatically controlled heater elements when not in use and by engine coolant from the truck engine coolant system flowing through a tube near the bottom of the tank. A nozzle, heated by the engine cooling system, mixes molten asphalt and gravel. Baffles in the nozzle and heating tube create a tortuous coolant path, enhancing heat transfer from the nozzle and tube to the molten asphalt. A control panel in the truck cabin is mounted by flexible ducting comprising two or more flexible ducts, each duct of smaller diameter being force-fitted into the next duct so that the O.D. of each duct firmly engages the I.D. of each outer duct providing a superior flexible mount. Electrical conduit and the like extend through the innermost duct.
REFERENCES:
patent: 4511284 (1985-04-01), Sterner
patent: 4678363 (1987-07-01), Sterner
patent: 4812076 (1989-03-01), Yant
patent: 5232306 (1993-08-01), Sterner
patent: 5263790 (1993-11-01), Bickley et al.
Husar John
Weinstein Louis
LandOfFree
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