Pressure sensor and regulator for airless material coating syste

Details Pressure sensor and regulator for airless material coating syste Pressure sensor and regulator for airless material coating syste

1980-03-17

1982-10-26

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

With system fluid relief or return to supply

By pressure responsive means

200 819R, 200 83B, 200 834, 417 38, F04B 4908

Patent

active

043557619

ABSTRACT:
An airless paint or material spray system having a pressure sensor and regulator for controlling the pressure of paint flowing from a paint pump to an airless spray gun. The pressure sensor and regulator includes three contiguous flexing diaphragms in a material chamber in the outlet flow line of the pump with the outermost diaphragm in direct contact with material being constructed of a thin plastic impervious to attack by common painting or coating materials. The two other diaphragms are rubber coated fabric diaphragms that axially position a precision steel rod movably mounted in a low clearance bore in a regulator housing. The axial movement of the precision rod is converted to rotational movement by an adjustably spring biased, pivotally mounted member in the housing having a universal connection with the precision rod. A normally closed snap action switch in the housing is actuated after a predetermined axial travel of the precision rod by an amplifier bar connected to the pivotally mounted member. This snap action switch is adapted to energize a dumping valve in the outlet of the pump at approximately 60 cycles per minute to maintain a desired pump outlet pressure.

REFERENCES:
patent: 2808484 (1957-10-01), Beck et al.
patent: 3466978 (1969-09-01), Carlstedt
patent: 4212591 (1980-07-01), Lamontagne et al.

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