Pressure-siphon switch for pneumatic spray gun
First Claim
Patent Images
1. An apparatus comprising:
- a paint container;
a nozzle assembly configured to receive paint from the paint container;
a housing having a handle, an air inlet, and an air flow path configured to direct pressurized air from the air inlet into the paint container; and
a valve configured to place the paint container in a pressure condition in which the pressurized air is directed to flow into the paint container, to place the paint container in a siphon condition in which the paint container is vented to the atmosphere and the pressurized air is blocked from flowing into the paint container, and to shift the paint container between the pressure condition and the siphon condition by rotating about an axis while remaining stationary along the axis.
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Accused Products
Abstract
An apparatus for use with a paint container includes a nozzle and a housing. The nozzle receives paint from the container. The housing has a handle, an air inlet, and an air flow path configured to direct air from the inlet into the container. A valve body opens and closes the air flow path into the container upon moving back and forth between open and closed positions. The valve body moves between those positions by rotating about an axis without moving along the axis.
62 Citations
10 Claims
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1. An apparatus comprising:
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a paint container; a nozzle assembly configured to receive paint from the paint container; a housing having a handle, an air inlet, and an air flow path configured to direct pressurized air from the air inlet into the paint container; and a valve configured to place the paint container in a pressure condition in which the pressurized air is directed to flow into the paint container, to place the paint container in a siphon condition in which the paint container is vented to the atmosphere and the pressurized air is blocked from flowing into the paint container, and to shift the paint container between the pressure condition and the siphon condition by rotating about an axis while remaining stationary along the axis. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus comprising:
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a paint container; a nozzle assembly configured to receive paint from the paint container; a housing supporting the nozzle assembly, the housing having a handle, an air inlet configured to receive pressurized air from a hose, an air outlet configured to direct pressurized air outward from the housing to the paint container, and air flow paths configured to direct air through the housing from the inlet to the nozzle assembly and the outlet; and a valve mounted on the housing, the valve being configured to place the paint container in a pressure condition in which the pressurized air is directed to flow from the outlet to the paint container, to place the paint container in a siphon condition in which the paint container is vented to the atmosphere through the valve and the pressurized air is blocked from flowing from the outlet to the paint container, and to shift the paint container back and forth between the pressure condition and the siphon condition by rotating about an axis while remaining stationary along the axis. - View Dependent Claims (7, 8, 9, 10)
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Specification