Stationary mix chamber
AssigneeGraco Minnesota Inc.
InventorsChristopher J. Pellin, Joseph E. Tix, Justin J. Weldon, John R. Ingebrand
Life of this patent
Estimating the term…
Abstract
A fast-set, plural component, spray applicator includes a stationary mix chamber to eliminate dynamic metal-to-metal high pressure fluid sealing. The stationary mix chamber mixes the plural components before dispensing the mixed components from the spray applicator.
Claims20
A stationary mix chamber for a plural component sprayer having a sprayer body, a spray valve configured to control flow of first and second component materials to a receiving chamber of the plural component sprayer, and a trigger operatively connected to the spray valve to control actuation of the spray valve to move relative to the receiving chamber and between a first position allowing the first and second component materials to flow to the receiving chamber through first and second flowpaths to place the plural component sprayer in a spray state, respectively, and a second position preventing the first and second component materials from flowing through the first and second flowpaths to the receiving chamber to place the plural component sprayer in a non-spray state, the stationary mix chamber comprising:
- a body extending between a first end and a second end and configured to mount within the receiving chamber, wherein the body includes a contoured portion disposed between the first end and the second end, the contoured portion configured such that a width of the body increases along the contoured portion such that the first end has a smaller width than a width of the contoured portion at an end of the contoured portion opposite the first end;
- a first inlet port and a second inlet port extending into the contoured portion of the body, the first inlet port configured to align with the first flowpath with the plural component sprayer in the spray state and in the non-spray state and the second inlet port configured to align with a second flowpath with the plural component sprayer in the spray state and the non-spray state;
- an outlet port fluidly connected to the first inlet port and the second inlet port;
- a flowpath extending along an axis and through the body, the flowpath fluidly connecting the first inlet port to the outlet port and fluidly connecting the second inlet port to the outlet port;
- a first seal mounted to the body and disposed around the first inlet port.
A stationary mix chamber for a plural component sprayer having a sprayer body, a spray valve configured to control flow of first and second component materials to a receiving chamber of the plural component sprayer, and a trigger operatively connected to the spray valve to control actuation of the spray valve to move relative to the receiving chamber and between a first position allowing the first and second component materials to flow to the receiving chamber through first and second flowpaths, respectively, to place the plural component sprayer in a spray state, and a second position preventing the first and second component materials from flowing through the first and second flowpaths to the receiving chamber to place the plural component sprayer in a non-spray state, the stationary mix chamber comprising:
- a body extending between a first end and a second end and configured to mount within the receiving chamber;
- a first inlet port and a second inlet port extending into the body, the first inlet port configured to align with the first flowpath with the plural component sprayer in the spray state and in the non-spray state and the second inlet port configured to align with a second flowpath with the plural component sprayer in the spray state and the non-spray state;
- a bore extending along an axis and within the body, the bore fluidly connecting the first inlet port to an outlet port and fluidly connecting the second inlet port to the outlet port;
- wherein the body includes a contoured portion disposed between the first end and the second end, the contoured portion extending radially inward relative to the axis and towards the first end such that the first end has a smaller width than a width of the contoured portion at an end of the contoured portion opposite the first end;
- and
- wherein a seal is mounted on the contoured portion and surrounds the first inlet port such that a flow to the bore through the first inlet port flows through the seal.
A stationary mix chamber for a plural component sprayer having a sprayer body, a spray valve configured to control flow of first and second component materials to a receiving chamber of the plural component sprayer, and a trigger operatively connected to the spray valve to control actuation of the spray valve to move relative to the receiving chamber and between a first position allowing the first and second component materials to flow to the receiving chamber through first and second flowpaths, respectively, to place the plural component sprayer in a spray state, and a second position preventing the first and second component materials from flowing through the first and second flowpaths to the receiving chamber to place the plural component sprayer in a non-spray state, the stationary mix chamber comprising:
- a body extending between a first end and a second end and configured to mount within the receiving chamber;
- a first inlet port and a second inlet port extending into the body, the first inlet port configured to align with the first flowpath with the plural component sprayer in the spray state and in the non-spray state and the second inlet port configured to align with a second flowpath with the plural component sprayer in the spray state and the non-spray state;
- a bore extending along an axis and within the body, the bore fluidly connecting the first inlet port to an outlet port and fluidly connecting the second inlet port to the outlet port;
- wherein the body includes a contoured portion disposed between the first end and the second end, the contoured portion extending radially inward relative to the axis and towards the first end such that the first end has a smaller width than a width of the contoured portion at an end of the contoured portion opposite the first end;
- and
- wherein a seal is mounted on the contoured portion and surrounds the first inlet port such that the seal defines a portion of a pathway between the first flowpath and the bore.
Dependencies are inferred from the claim text.