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US 8,757,515 B2Granted
Internal mixing spray gun
AssigneeFinishing Brands Holdings Inc.
InventorBradley P. Walter
Life of this patent
Estimating the term…
Abstract
A system, in certain embodiments, includes a spray device including a first liquid passage configured to flow a first liquid in a generally downstream direction toward a spray tip. The spray device also includes a second liquid passage configured to flow a second liquid in a generally upstream direction such that the second liquid impinges upon the first liquid at an outlet to the second liquid passage. The upstream direction is substantially opposite from the downstream direction.
Claims20
A system, comprising:
- a spray gun, comprising:
- a first liquid passage configured to flow a first liquid in a generally downstream direction toward a spray tip;
- a second liquid passage configured to flow a second liquid in a generally upstream direction such that the second liquid impinges upon the first liquid at an outlet to the second liquid passage as the first liquid is flowing in the generally downstream direction and the second liquid is flowing in the generally upstream direction, wherein the upstream direction is substantially opposite from the downstream direction;
- and
- a check valve disposed at the outlet to the second liquid passage, wherein the check valve comprises a valve body and a shaft disposed within a cavity of the valve body, a head of the shaft is configured to contact the valve body to substantially block flow of the second liquid through the outlet while the valve is in a closed position, the head of the shaft and the valve body are shaped to form a substantially annular orifice that facilitates flow of the second liquid through the outlet while the valve is in an open position, and the substantially annular orifice is configured to provide a generally even distribution of the second liquid into the first liquid passage.
2 more elements
A system, comprising:
- a multi-liquid mixing device, comprising:
- a first liquid passage configured to flow a first liquid in a generally downstream direction toward a discharge port;
- a second liquid passage configured to flow a second liquid in a generally upstream direction such that the second liquid impinges upon the first liquid at an outlet to the second liquid passage as the first liquid is flowing in the generally downstream direction and the second liquid is flowing in the generally upstream direction, wherein the upstream direction is substantially opposite from the downstream direction;
- and
- a check valve disposed at the outlet to the second liquid passage, wherein the check valve comprises a valve body and a shaft disposed within a cavity of the valve body, a head of the shaft is configured to contact the valve body to substantially block flow of the second liquid through the outlet while the valve is in a closed position, and the head of the shaft is configured to be spaced from the valve body to form an orifice that facilitates flow of the second liquid through the outlet while the valve is in an open position.
2 more elements
A system, comprising:
- a spray gun, comprising:
- a first liquid passage configured to flow a first liquid in a generally downstream direction toward a spray tip;
- a second liquid passage configured to flow a second liquid in a generally upstream direction such that the second liquid impinges upon the first liquid at an outlet to the second liquid passage as the first liquid is flowing in the generally downstream direction and the second liquid is flowing in the generally upstream direction, wherein the upstream direction is substantially opposite from the downstream direction;
- and
- a check valve disposed at the outlet to the second liquid passage, wherein the check valve comprises a valve body, a shaft disposed within a cavity of the valve body, and a compression spring configured to urge a head of the shaft into contact with the valve body to substantially block flow of the second liquid through the outlet, and wherein the compression spring is configured to enable the head of the shaft to be spaced from the valve body to form an orifice in response to a pressure differential between the first and second liquids sufficient to overcome a force applied by the compression spring, and the orifice is configured to facilitate flow of the second liquid through the outlet.
2 more elements
Dependencies are inferred from the claim text.