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US 12,005,466 B2Granted
Fluid sprayer and components of a fluid sprayer
AssigneeGraco Minnesota Inc.
InventorsChristopher C. Wagner, Mark C. Richter
Life of this patent
Estimating the term…
Abstract
An air-assisted airless spray gun includes a valve cartridge configured to control a flow of air or spray fluid through the spray gun. The valve cartridge includes a housing configured to interface with the spray gun body and fully supporting the flow control components of the valve cartridge. The housing is secured within a bore of the spray gun body. The valve member is supported by the housing and actuatable relative to a seat. The valve is formed between the seal end of the valve member and the seat.
Claims19
A spray gun configured to receive flows of a fluid and of air and to emit a fluid spray and the air, the spray gun comprising:
- a gun body having a first bore, a second bore, and a gap disposed between the first bore and the second bore, the first bore and the second bore disposed coaxially on an axis;
- a spray fluid control cartridge having a first housing disposed within the first bore, wherein a spray fluid control valve is fully contained within the first housing and is configured to control spraying of spray fluid from the spray gun, wherein a fluid valve member of the spray fluid control valve extends out of the first housing and towards the second bore;
- an air control cartridge having a second housing disposed within the second bore, wherein a first valve member is at least partially contained within the second housing, the first valve member configured to control airflow for spraying by the spray gun, wherein a receiving chamber is formed in the first valve member;
- and
- a trigger extending into the gap and configured to actuate the spray fluid control valve between a closed state and an open state;
- wherein a valve stem of the fluid valve member extends into the receiving chamber of the first valve member such that a projection extending radially from the valve stem of the fluid valve member is disposed within the receiving chamber;
- wherein the projection is spaced from an opening of the receiving chamber by a first axial gap, the valve stem of the fluid valve member extending into the receiving chamber through the opening;
- and
- wherein the trigger is configured to engage the first valve member to shift the first valve member to a first air valve open state prior to engaging the projection to exert a driving force on the projection of the valve stem of the fluid valve member to shift the spray fluid control valve to the open state.
6 more elements
A spray gun configured to receive flows of a spray fluid and of air and to emit a fluid spray and the air, the spray gun comprising:
- a gun body, the gun body including a first valve bore and a mount slot intersecting the first valve bore;
- a first flow valve cartridge disposed in the first valve bore, wherein the first flow valve cartridge fully contains a first flow valve configured to control flow downstream through the first flow valve cartridge;
- a fluid tube assembly configured to provide spray fluid to the gun body, the fluid tube assembly including a mount block having a mount bore extending therethrough;
- wherein the first flow valve cartridge is insertable into and removable from the first valve bore as a single component;
- and
- wherein the mount block extends into the mount slot, and wherein the first flow valve cartridge extends fully through the mount bore to hold the mount block within the mount slot and such that an inlet port through the first flow valve cartridge is disposed within the mount block to receive the spray fluid from within the mount bore.
3 more elements
A spray gun comprising:
- a gun body having an air valve bore, an air inlet bore in fluid communication with the air valve bore, an assist air bore extending from the air valve bore, and a fan air bore extending from the air valve bore;
- an air valve assembly disposed in the air valve bore and configured to control a first air flow between the air inlet bore and the assist air bore and a second air flow between the air inlet bore and the fan air bore, the air valve assembly comprising:
- a valve body disposed in the air valve bore and having an axial bore therethrough and at least one air outlet port formed through the valve body, wherein the at least one air outlet port is in fluid communication with the fan air bore;
- a common valve member disposed at least partially within the air valve bore, wherein a first end of the common valve member extends out of the air valve bore and a second end of the common valve member is disposed in the valve body;
- and
- a fan valve member disposed within the air valve bore;
- wherein a first valve is formed between the common valve member and a first seat, the first valve configured to control flow downstream to the assist air bore;
- wherein a second valve is formed between the common valve member and a second seat, the second valve configured to control flow downstream to the fan air bore.
5 more elements
A spray gun configured to receive flows of a fluid and of air and to emit a fluid spray and the air, the spray gun comprising:
- a gun body having a first bore, a second bore, and a gap disposed between the first bore and the second bore, wherein the first bore and the second bore are disposed coaxially on an axis;
- a spray fluid control cartridge having a first housing partially disposed within the first bore, wherein a spray fluid control valve is fully contained within the first housing and is configured to control spraying of spray fluid from the spray gun, and wherein the first housing extends fully axially through the first bore such that the first housing projects out of the first bore in a first direction along the axis and in a second direction along the axis;
- an air control cartridge having a second housing disposed within the second bore, wherein a first valve member is at least partially contained within the second housing, the first valve member configured to control airflow for spraying by the spray gun;
- and
- a trigger extending into the gap and configured to actuate the spray fluid control valve between a closed state and an open state.
2 more elements
A spray gun configured to receive flows of a fluid and of air and to emit a fluid spray and the air, the spray gun comprising:
- a gun body having a first bore, a second bore, and a gap disposed between the first bore and the second bore, wherein the first bore and the second bore are disposed coaxially on an axis;
- a spray fluid control cartridge having a first housing at least partially disposed within the first bore, wherein a spray fluid control valve is formed at an interface between a fluid valve member and a fluid valve seat, the spray fluid control valve fully contained within the first housing and configured to control spraying of spray fluid from the spray gun, wherein the fluid valve member projects out of the first housing at a location disposed within the gap;
- an actuator spring disposed within the first housing, the actuator spring configured to bias the fluid valve member towards the fluid valve seat, the actuator spring disposed outside of and isolated from a fluid chamber within the first housing;
- an air control cartridge having a second housing disposed within the second bore, wherein a first valve member is at least partially contained within the second housing, the first valve member configured to control airflow for spraying by the spray gun;
- and
- a trigger extending into the gap and configured to actuate the spray fluid control valve between a closed state and an open state.
3 more elements
Dependencies are inferred from the claim text.