Optimized double washer pull plug for minimizing coating error
First Claim
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1. An optimized dual washer pull plug apparatus for masking a mechanical part, the mechanical part having a first side, a second side, and an aperture that extends from the first side to the second side, the optimized dual washer pull plug comprised of:
- a plug body having a first end and a second end;
a first centering component between the first end of the plug body and the second end of the plug body, the first centering component having a first end and a second end and the first centering component having a length between the first and second ends of the first centering component, a diameter between the first and second ends of the first centering component, and being generally cylindrical between the first and second ends of the first centering component;
a second centering component between the first centering component and the second end of the plug body, the second centering component having a first end and a second end and the second centering having a length between the first and second ends of the second centering component, a diameter between the first and second ends of the second centering component, and being generally cylindrical between the first and second ends of the second centering component, the length of the second centering component greater than the length of the first centering component;
a first masking flange at the first end of the first centering component, the first masking flange having a first major diameter, a first flexibility coefficient, and an angle θ
1, said first flexibility coefficient directly proportional to the amount of force necessary to pull said first masking flange through the aperture of the mechanical part; and
a second masking flange at the first end of the second centering component, the second masking flange having a second major diameter, a second flexibility coefficient, and an angle θ
2,wherein said plug body, said first centering component, said second centering component, said first masking flange, and said second masking flange withstanding temperatures of up to 600°
F.,wherein the first centering component is configured to center the first masking flange relative to the aperture of the mechanical part on the first side of the mechanical part,wherein the second centering component is configured to center the second masking flange relative to the aperture of the mechanical part on the second side of the mechanical part,wherein the plug body has a diameter between the first and second centering components that is less than the diameter the first centering component and less than the diameter of the second centering component,and wherein the first masking flange has a thickness less than the second masking flange such that the first masking flange is more flexible than the second masking flange.
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Abstract
The present invention is an optimized DWP for minimizing coating error that has two centering components which center the DWP inside a threaded or non-threaded opening effectively masking the threads and/or opening during the coating process.
34 Citations
20 Claims
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1. An optimized dual washer pull plug apparatus for masking a mechanical part, the mechanical part having a first side, a second side, and an aperture that extends from the first side to the second side, the optimized dual washer pull plug comprised of:
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a plug body having a first end and a second end; a first centering component between the first end of the plug body and the second end of the plug body, the first centering component having a first end and a second end and the first centering component having a length between the first and second ends of the first centering component, a diameter between the first and second ends of the first centering component, and being generally cylindrical between the first and second ends of the first centering component; a second centering component between the first centering component and the second end of the plug body, the second centering component having a first end and a second end and the second centering having a length between the first and second ends of the second centering component, a diameter between the first and second ends of the second centering component, and being generally cylindrical between the first and second ends of the second centering component, the length of the second centering component greater than the length of the first centering component; a first masking flange at the first end of the first centering component, the first masking flange having a first major diameter, a first flexibility coefficient, and an angle θ
1, said first flexibility coefficient directly proportional to the amount of force necessary to pull said first masking flange through the aperture of the mechanical part; anda second masking flange at the first end of the second centering component, the second masking flange having a second major diameter, a second flexibility coefficient, and an angle θ
2,wherein said plug body, said first centering component, said second centering component, said first masking flange, and said second masking flange withstanding temperatures of up to 600°
F.,wherein the first centering component is configured to center the first masking flange relative to the aperture of the mechanical part on the first side of the mechanical part, wherein the second centering component is configured to center the second masking flange relative to the aperture of the mechanical part on the second side of the mechanical part, wherein the plug body has a diameter between the first and second centering components that is less than the diameter the first centering component and less than the diameter of the second centering component, and wherein the first masking flange has a thickness less than the second masking flange such that the first masking flange is more flexible than the second masking flange. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An optimized dual washer pull plug apparatus comprised of:
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a mechanical part, the mechanical part including a first side, a second side, an aperture that extends from the first side to the second side; a plug body having a first end and a second end; a first centering component between the first end of the plug body and the second end of the plug body, the first centering component having a first end and a second end and the first centering component having a length between the first and second ends of the first centering component and being generally cylindrical between the first and second ends of the first centering component; a second centering component between the first centering component and the second end of the plug body, the second centering component having a first end and a second end and the second centering having a length between the first and second ends of the second centering component and being generally frusto-conical between the first and second ends of the second centering component, the length of the second centering component greater than the length of the first centering component; an angular shaped first masking flange at the first end of the first centering component, the first masking flange having a first major diameter, a first flexibility coefficient, and an angle θ
1, said first flexibility coefficient directly proportional to the amount of force necessary to pull said first masking flange through the aperture of the mechanical part;a triangular shaped second masking flange at the first end of the second centering component, the second masking flange having a second major diameter, a second flexibility coefficient, and an angle θ
2; andwherein said plug body, said first centering component, said second centering component, said first masking flange, and said second masking flange withstanding temperatures of up to 600°
F.,wherein the first centering component is received in the aperture of the mechanical part to center the first masking flange relative to the aperture of the mechanical part on the first side of the mechanical part to mask the aperture, and wherein the second centering component is received in the aperture of the mechanical part to center the second masking flange relative to the aperture of the mechanical part on the second side of the mechanical part mask the aperture, and wherein the first masking flange has a thickness less than the second masking flange such that the first masking flange is more flexible than the second masking flange. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification