Apparatus and methods for purging material application device
First Claim
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1. Purge apparatus, comprising:
- a spray gun comprising a nozzle and a handle that is manually gripped by an operator during a coating operation,a coating material inlet to said handle,a coating material flow path that extends through at least a portion of said handle to said nozzle,a purge air inlet to said handle that is separate from said coating material inlet.
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Abstract
Purge method and apparatus for a manual spray gun or coating material application device, in which purge air is introduced into the device through a handgrip portion that is manually held during a coating operation. Purge air first enters the coating material flow path after the purge air enters the handgrip portion.
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Citations
29 Claims
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1. Purge apparatus, comprising:
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a spray gun comprising a nozzle and a handle that is manually gripped by an operator during a coating operation, a coating material inlet to said handle, a coating material flow path that extends through at least a portion of said handle to said nozzle, a purge air inlet to said handle that is separate from said coating material inlet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A coating material application system, comprising:
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a coating material application device, a supply of coating material, a source of purge air and a control system that controls coating and purging operations, said device comprising a nozzle and a handle that is manually gripped by an operator during a coating operation, a coating material inlet to said handle, a coating material flow path that extends through at least a portion of said handle to said nozzle, a purge air inlet to said handle that is separate from said coating material inlet. - View Dependent Claims (18, 19, 20, 21)
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22. Method for purging a coating material spray gun, comprising:
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supplying coating material to a coating material inlet during a coating operation, supplying purge air to a pure air inlet during a purging operation, said coating material flowing through a coating material flow path that is at least partially disposed within a handle that is manually gripped by an operator during a coating operation, said purge air flowing into said handle along a purge air flow path that is separate from said coating material flow path. - View Dependent Claims (23, 24)
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25. Purge apparatus, comprising:
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a spray gun comprising a nozzle and a handle that is manually gripped by an operator during a coating operation, a coating material inlet to said handle, a coating material flow path that extends through at least a portion of said handle to said nozzle, a purge air inlet to said handle that is separate from said coating material inlet, a flexible boot disposed on said handle, said boot providing a seal between at least a part of said purge air flow path and said coating material flow path. - View Dependent Claims (26, 27)
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28. A coating material application device, comprising:
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a handgrip that is manually held by an operator during a coating operation, a coating material flow path at least a portion of which is disposed within said handgrip, a purge air inlet on said handgrip for supplying purge air into said coating material flow path during a purge operation, purge air being introduced into said handgrip before entering said coating material flow path. - View Dependent Claims (29)
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Specification