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US 7,071,429 B1Granted
Linear adjustment operator for pressure control of paint pumps
OwnerRichard P. Anderson, Scott R. Carpenterinventors
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Abstract
A linear adjustment operator for pressure control of paint pumps including a base, an electrical switch, a linear actuator, a spring biasing the switch towards the actuator and a lever acting on the actuator for repositioning the actuator with the switch positioned within a range of angular positions to set a desired pressure for the pump by the position of the lever. A slide operator in a bezel is coupled to the lever for adjustment by a user, with plastically deformable parts in interengagement between the operator and bezel to retain the setting selected.
Claims17
Apparatus for adjusting pressure in a paint pump comprising:
- a. a base having a first pivot point and a second pivot point;
- b. an electrical switch mounted on the base for rotational positioning about the first pivot point within a range of angular positions corresponding to a range of pressures for the pump, the switch being responsive to a pressure sensor for actuating the switch when the pressure sensor advances toward the switch wherein the amount of advance of the pressure sensor is proportional to pump pressure;
- c. a linear actuator movable along an axis offset from the first pivot point and in line with the switch;
- d. resilient means for biasing the switch in a first direction of rotation about the first pivot point and into contact with the linear actuator such that a change of position of the linear actuator results in a change in position of the switch;
- and
- e. a manually positionable lever mounted for rotation about the second pivot point, the lever in contact with the linear actuator for repositioning the linear actuator along the axis when the lever is pivoted about the second pivot point
- such that the switch is repositionable within the range of angular positions to set a desired pressure for the pump by manually selecting a desired position for the lever.
4 more elements
Dependencies are inferred from the claim text.