Multi-motor liquid sample and device

Details Multi-motor liquid sample and device Multi-motor liquid sample and device

1990-06-18

1991-08-27

Beha, Jr., William H.

Electrical generator or motor structure

Dynamoelectric

Rotary

74665G, 4174236, H02K 7118, H02K 1600

Patent

active

050436171

ABSTRACT:
A drive system for a pump/compressor which feeds a pneumatic circuit of a portable waste water sampling device, and comprising individual electric motors (20) each operating at 12 volts and drawing a current no greater the 350 mA at 2.5 w, the motors driving a common pinion (23) with an output shaft (24) for connection to the pump/compressor. The use of a number of low capacity drive motors, which together provide sufficient torque to drive the pump/compressor, avoids the danger of spark generation, particularly in a potentially explosive environment such as may be found below ground. Since the motors are small they may be mounted conveniently within the sampling equipment, taking up no more space than would be occupied by a single motor of larger capacity.

REFERENCES:
patent: 1462658 (1923-07-01), Richardson
patent: 3979652 (1976-09-01), Faxon
patent: 4409504 (1983-10-01), Wilson et al.
patent: 4528483 (1985-07-01), Muller
patent: 4628748 (1986-12-01), Jogan et al.
patent: 4803390 (1989-02-01), Bertram et al.

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