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US 5,645,217 AGranted
Two-part compound spray-application system and method
OwnerDaniel Warreninventor
Life of this patent
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Abstract
A spray application system and method for a two-part, self-setting compound, comprising a source of the first part of the compound, a source of the second part of the compound, a spray device for applying the compound, a mixing assembly for intermingling the two parts of the compound, a heated hose downstream of the mixing device for delivering the compound to the spray device, a first pump or set of pumps for delivering the first part of the compound to the mixing device, and a second pump or set of pumps for delivering the second part of the compound to the mixing device.
Claims11
A spray application system for a two-part, self-setting compound, comprising:
- a first container for the first part of the compound;
- a first temperature-controlled heater for maintaining the first part of the compound in said first container at a selected elevated temperature;
- a first low pressure pump for drawing the first part of the compound out of said first container;
- a first recirculating loop for selectively returning some or all of the first part of the compound from said first low pressure pump back into said first container, for mixing and evenly heating the first part of the compound in said first container;
- a second container for the second part of the compound;
- a second temperature-controlled heater for maintaining the second part of the compound in said second container at a selected elevated temperature;
- a second low pressure pump for drawing the second part of the compound out of said second container;
- a second recirculating loop for selectively returning some or all of the second part of the compound from said second low pressure pump back into said second container, for mixing and evenly heating the second part of the compound in said second container;
- a first high-pressure, positive-displacement pump fed by said first low pressure pump, for boosting the pressure of the first part of the compound;
- a second high-pressure, positive-displacement pump fed by said second low pressure pump for boosting the pressure of the second part of the compound;
- an air-driven motor mechanically coupled to both of said high-pressure pumps for driving both of said high-pressure pumps in tandem to ensure correct relative flow of both parts of the compound;
- a static mixer, fed from both of said high-pressure pumps, for intermingling the two parts of the compound;
- a spray device for spray applying the compound;
- and
- a temperature-controlled, heated hose between said static mixer and said spray device, for maintaining the compound at an elevated temperature until it is sprayed.
12 more elements
Dependencies are inferred from the claim text.