Sealed diaphragm pump
First Claim
1. A pump comprising:
- a two part housing arrangement havinga lower molded housing configured with a rear endbell portion to receive an armature and bearing, an intermediate motor portion to receive a motor shell and magnets arranged around the armature, and a front endbell portion to receive a diaphragm support plate and a wobble plate assembly;
the rear endbell portion, the intermediate motor portion and the front endbell portion being configured as an integrated molded housing unit formed as one piece so that there is no leak path either between the rear endbell portion and the intermediate motor portion, or between the intermediate motor portion and the front endbell portion, andan upper housing having a circumferential rim portion, and being configured to receive a check valve assembly; and
a diaphragm assembly comprising the diaphragm support plate and a diaphragm, the diaphragm assembly being arranged between the front endbell of the lower molded housing and the circumferential rim portion of the upper housing, so as to form a circumferential fluid-tight sealing arrangement that is configured between the diaphragm support plate, the diaphragm, and the circumferential rim portion when the lower molded housing is coupled to the upper housing on only one end of the pump.
1 Assignment
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Accused Products
Abstract
A pump includes a molded housing configured with a rear endbell portion to receive an armature and bearing, an intermediate motor portion to receive a motor shell and magnets arranged around the armature, and a front endbell portion to receive a diaphragm assembly having a diaphragm support plate supporting a diaphragm, the rear endbell portion, the intermediate motor portion and the front endbell portion being configured as an integrated molded housing unit, the diaphragm having two circumferential diaphragm sealing surfaces. The pump also includes an upper housing configured to assemble and couple to the molded housing so as to form a circumferential fluid-tight sealing arrangement that is configured between the front endbell portion and the upper housing on only one end of the pump.
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Citations
20 Claims
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1. A pump comprising:
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a two part housing arrangement having a lower molded housing configured with a rear endbell portion to receive an armature and bearing, an intermediate motor portion to receive a motor shell and magnets arranged around the armature, and a front endbell portion to receive a diaphragm support plate and a wobble plate assembly;
the rear endbell portion, the intermediate motor portion and the front endbell portion being configured as an integrated molded housing unit formed as one piece so that there is no leak path either between the rear endbell portion and the intermediate motor portion, or between the intermediate motor portion and the front endbell portion, andan upper housing having a circumferential rim portion, and being configured to receive a check valve assembly; and a diaphragm assembly comprising the diaphragm support plate and a diaphragm, the diaphragm assembly being arranged between the front endbell of the lower molded housing and the circumferential rim portion of the upper housing, so as to form a circumferential fluid-tight sealing arrangement that is configured between the diaphragm support plate, the diaphragm, and the circumferential rim portion when the lower molded housing is coupled to the upper housing on only one end of the pump. - View Dependent Claims (2, 3, 4)
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5. An encapsulated diaphragm pump comprising:
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a two part housing arrangement having a lower molded housing configured with a rear endbell portion to receive an armature and bearing, an intermediate motor portion to receive a motor shell and magnets arranged around the armature, and a front endbell portion to receive a diaphragm support plate and a wobble plate assembly;
the rear endbell portion, the intermediate motor portion and the front endbell portion being configured as an integrated molded housing unit formed as one piece so that there is no leak path either between the rear endbell portion and the intermediate motor portion, or between the intermediate motor portion and the front endbell portion, andan upper housing having a circumferential upper housing portion, and being configured to receive a check valve assembly; a diaphragm assembly comprising the diaphragm support plate and a diaphragm, the diaphragm having two circumferential diaphragm sealing surfaces, the circumferential upper housing portion configured to cause a circumferential fluid-tight seal between the two circumferential diaphragm sealing surfaces and corresponding sealing surfaces of the check valve assembly and the diaphragm support plate when the upper housing is assembled and coupled to the lower molded housing. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification