Pumps – Motor driven – Electric or magnetic motor
Patent
1983-01-21
1985-06-18
Croyle, Carlton R.
Pumps
Motor driven
Electric or magnetic motor
417413, 417417, 92101, 92129, F04B 1704, F04B 4304, F01B 1902, F16J 110
Patent
active
045239029
ABSTRACT:
A fluid flow machine has a diaphragm pump which is driven by an electromagnet and is confined in a pressure-resistant capsule together with the electromagnet as well as with the electronic control unit for the electromagnet. The constituents of the capsule are connected to each other so that they form one or more gaps each having a configuration and dimensions such as to prevent the propagation of flames and/or sparks from the interior of the capsule to the surrounding area. This renders it possible to use the machine in an explosive atmosphere, even if the pump is designed to deliver metered quantities of flammable fluids. A gap of the above outlined character is provided between two portions of the capsule where a reciprocable plunger extends toward the diaphragm. Additional gaps are provided in a removable cover of the capsule at each of several locations where rotary and/or reciprocable adjusting devices extend from the interior of the capsule so that they can be manipulated in order to change the extent of movement of the armature of the electromagnet, to adjust one or more potentiometers or to actuate one or more switches. Further safety gaps can be provided in regions where the terminal or terminals of one or more electric cables extend into the capsule and/or where a light-transmitting cylinder is installed in the capsule to allow for observation of a signal generating device in the interior of the capsule.
REFERENCES:
patent: 1987257 (1935-01-01), Kent et al.
patent: 2835831 (1958-05-01), Harrington
patent: 2898860 (1959-08-01), Grober
patent: 3153347 (1964-10-01), Schulze et al.
patent: 4123122 (1978-10-01), Gabrielson et al.
patent: 4421588 (1983-12-01), Davies
Chemie und Filter GmbH Verfahrenstechnik KG
Croyle Carlton R.
Kontler Peter K.
Olds T.
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