Control circuit for airless spray gun

Details Control circuit for airless spray gun Control circuit for airless spray gun

1986-08-29

1987-11-10

Shoop, Jr., William M.

Electricity: motive power systems

Reciprocating or oscillating motor

Energizing winding circuit control

318345H, 361152, H02K 3300

Patent

active

047059958

ABSTRACT:
An airless spray gun includes a pump piston and a drive arrangement formed of a coil and a swinging armature for connection to an alternating current network. A suppression circuit is provided for periodically suppressing an arbitrarily selectable whole number of successive half-waves of the alternating current. A plurality of phase control circuits corresponding in number to the number of suppression stages is also provided, each of the phase control circuits effecting a phase-angle of fixed size and being permanently connected to one of the suppression stages to supply a phase-delayed signal of selected frequency to the drive arrangement.

REFERENCES:
patent: 4138708 (1979-02-01), Takeshima
patent: 4517620 (1985-05-01), Boll
patent: 4636961 (1987-01-01), Bauer

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