Airless sprayer with hardened cylinder
First Claim
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1. An airless sprayer, comprising:
- (a) an electric drive unit;
(b) a cylinder; and
(c) a piston reciprocating within the cylinder, the piston reciprocatingly driven by the electric drive unit, (d) wherein the cylinder further comprises nitride-hardened steel.
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Abstract
An airless sprayer for paint or the like consists of an electric drive unit connected to a piston. Driven by the electric drive unit, the piston reciprocates within the cylinder, thus spraying the paint or the like. Because of the close tolerance between the piston and cylinder (typically about 0.0002 to about 0.0003 inches), the sprayed liquid provides a seal between the piston and cylinder. To prevent this tolerance from increasing to the point of failure, the cylinder is manufactured from nitride hardened steel. A process for manufacturing the airless sprayer is also disclosed.
100 Citations
14 Claims
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1. An airless sprayer, comprising:
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(a) an electric drive unit;
(b) a cylinder; and
(c) a piston reciprocating within the cylinder, the piston reciprocatingly driven by the electric drive unit, (d) wherein the cylinder further comprises nitride-hardened steel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13)
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8. A process for manufacturing an airless sprayer, comprising the steps of:
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(a) nitride hardening a cylinder;
(b) inserting a piston into the cylinder; and
(c) connecting the piston to an electric drive unit for reciprocating action within the cylinder. - View Dependent Claims (14)
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Specification