Procedure for blocked drain line on asphalt trailer

• US 20060065293A1
• Filed: 09/30/2004
• Published: 03/30/2006
• Est. Priority Date: 09/30/2004
• Status: Abandoned Application

• Current Assignee: Building Materials Investment Corporation (Standard Industries, Inc.)
• Original Assignee: Building Materials Investment Corporation (Standard Industries, Inc.)
• Inventors: Sargent, Thomas L.
• Application Number:
  US10/956,002
• Publication Number:
  US 20060065293A1
• Time in Patent Office: Days
• US Class Current: 134/34
• CPC Class Codes: B08B 9/0321 using pressurised, pulsating or purging fluid E04F17/126 takes precedence

Abstract

An apparatus and method for dislodging a solidified plug formed in the delivery line of hot asphalt blocking the delivery of the flowable asphalt to a site close to or remote from the site of application to a surface to be fixed or coated with the flowable hot asphalt.

Claims

1. An apparatus to dislodge a plug of asphalt solidified in the exit port of an asphalt-containing distributor truck comprising:

a tank containing an inert, non-flammable gas under pressure;

an exit port extending from said tank terminating in a coupling means, releasably attached to said exit port of said asphalt-containing distributor truck;

valve to open said pressure device of said inert, non-flammable gas from said tank;

regulator gauges associated with said pressure device, wherein said pressures are controlled in order to dislodge said solidified plug contained in said asphalt-containing distributor truck in order to restart the flow of asphalt from said distributor truck.

2. The apparatus of claim 1 wherein said inert, non-flammable gas is nitrogen.

3. The apparatus of claim 1 wherein said inert, non-flammable gas is argon.

4. The apparatus of claim 1 wherein said dislodge of the plug is to release said plug in order to restart the flow of said hot asphalt material.

5. The apparatus of claim 1 further comprising an extension hose emanating from the asphalt-containing tank to deliver the hot asphalt to a remote site wherein the pressure device is attached to the remote end of the extension hose.

6. An apparatus to dislodge a plug of asphalt solidified in the exit port of an asphalt-containing distribution tank having a pressure device comprising:

a tank containing an inert, non-flammable gas under pressure;

an exit port extending from said tank and terminating in a coupling means, releasably attached to said exit port of said asphalt-containing truck; and

a regulator gauge on said pressure device to controllably release said inert, non-flammable gas to dislodge said plug of the exit port of the asphalt-containing distributor tank.

7. A method to dislodge a plug of asphalt solidified in the exit port of an asphalt-containing distributor tank comprising the steps of:

a) providing a pressure device comprising;

a tank containing an inert, non-flammable gas under pressure;

a supply valve on said tank;

an exit port extending from said tank and terminating in a coupling means for releasable attachment to an exit port of an asphalt-containing truck;

a regulator gauge on the tank of the pressure device to release said inert, non-flammable gas;

a vent valve on the pressure device; and

b) attaching said pressure device to the exit port of said asphalt-containing truck using the coupling means;

c) setting the regulator gauge to zero pressure;

d) closing the vent valve on the pressure device;

e) opening said supply valve;

f) starting the flow of said inert, non-flammable gas;

g) increasing the flow of said inert, non-flammable gas up to a pressure of 90 psi or until said plug of asphalt is dislodged;

h) closing supply valve;

i) opening said vent valve to release pressure; and

j) removing said pressure device from said exit point of said asphalt-containing truck.

8. The method of claim 7 wherein said apparatus further comprises an extension hose emanating from said asphalt-containing tank to deliver the hot asphalt to a remote site wherein the pressure device is attached to the remote end of the extension hose.

9. The method of claim 7 wherein said inert, non-flammable gas is nitrogen.

10. The method of claim 7 wherein said inert, non-flammable gas is argon.

11. The method of claim 7 wherein said dislodge of said solidified plug is to release said plug from said exit port and putting it in the hot asphalt contained in the distributor tank to restart the flow of said hot asphalt.