Electromagnetically reciprocating apparatus with adjustable boun

Details Electromagnetically reciprocating apparatus with adjustable boun Electromagnetically reciprocating apparatus with adjustable boun

1988-06-16

1989-08-08

Croyle, Carlton R.

Pumps

Motor driven

Electric or magnetic motor

92 85R, F04B 1704

Patent

active

048548332

ABSTRACT:
An electromagnetically reciprocating apparatus includes a piston assembly which is driven by an electromagnet repeating magnetization and demagnetization and a compression coil spring so as to reciprocate a front and rear pistons of the assembly in a front and rear cylinders. An air hole is formed in the rear cylinder to communicate a sealed inner space partitioned in the cylinder by the rear piston with an atmosphere. A valve is mounted on the air hole to adjust a resonance frequency of the vibration system of the apparatus.

REFERENCES:
patent: 3461806 (1969-08-01), Barthalon
patent: 3542495 (1970-11-01), Barthalon

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