US4537565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetically operated diaphragm pump
Assignee: Chemie und Filter GmbH Verfahrenstechnik KG
•
Filing: 1983-02-03
•
Granted: 1985-08-27
•
Expires: 2003-02-03
Abstract
Abstract The membrane of a diaphragm pump is deformable by the reciprocable armature of a cylindrical electromagnet which is installed in the interior of a plastic housing adjacent to a partition which separates the winding or windings of the electromagnet from the casing of the pump and which carries the casing as well as the electromagnet. That section of the housing which surrounds the electromagnet is a relatively thin cylinder having circumferentially extending heat-dissipating ribs and a cylindrical internal surface which defines with the cylindrical external surface of the electromagnet a gap of constant width. The area around the cylindrical section of the housing is unobstructed, and the housing further includes a larger section which is integral with the cylindrical section, which is rigid with a foot extending well below the electromagnet to enhance the stability of the machine, and which confines a control circuit for the electromagnet.
Inventors
- 👤 Friedrich Edler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:48
CPC Classifications
F; F04; F04B; F04B17/00; F04B17/03; F04B17/04; F04B17/042; H; H02; H02K; H02K11/00; H02K11/30; H02K11/33; H02K33/00; H02K33/02; H02K5/00; H02K5/04; H02K5/18; H02K5/22; H02K5/225
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
221 words
A fluid flow machine, comprising an axial piston pump, particularly a diaphragm pump; an electromagnet adjacent to and arranged to operate said pump and to thereby generate heat, said electromagnet having an at least substantially cylindrical external casing surface; and a housing including a partition disposed between said pump and said electromagnet, a substantially cylindrical section adjacent to said partition, spacedly surrounding at least a portion of said external casing surface and defining therewith a gap of substantially constant width for transfer of heat from said cylindrical external casing surface to said cylindrical section, said cylindrical section having an outer surface which is exposed to the surrounding atmosphere and external heat dissipating projections at least some of which extend circumferentially of said cylindrical section, said housing further including an additional section integral with and supporting said cylindrical section and the cross-sectional area of the interior of said additional section exceeding the cross-sectional area of the interior of said cylindrical section, said additional section extending downwardly beyond said cylindrical section and said housing also including a supporting leg rigid with said additional section and having an extension extending toward said pump and spaced apart from and disposed at a level below said cylindrical section, said cylindrical section, said additional section and said leg of said housing consisting of a synthetic plastic material.
Claim 2
Dependent Claim
221 words
A fluid flow machine, comprising an axial piston pump, particularly a diaphragm pump; an electromagnet adjacent to and arranged to operate said pump and to thereby generate heat, said electromagnet having an at least substantially cylindrical external casing surface; and a housing including a partition disposed between said pump and said electromagnet, a substantially cylindrical section adjacent to said partition, spacedly surrounding at least a portion of said external casing surface and defining therewith a gap of substantially constant width for transfer of heat from said cylindrical external casing surface to said cylindrical section, said cylindrical section having an outer surface which is exposed to the surrounding atmosphere and external heat dissipating projections at least some of which extend circumferentially of said cylindrical section, said housing further including an additional section integral with and supporting said cylindrical section and the cross-sectional area of the interior of said additional section exceeding the cross-sectional area of the interior of said cylindrical section, said additional section extending downwardly beyond said cylindrical section and said housing also including a supporting leg rigid with said additional section and having an extension extending toward said pump and spaced apart from and disposed at a level below said cylindrical section, said cylindrical section, said additional section and said leg of said housing consisting of a synthetic plastic material.
Claim 3
Dependent Claim
26 words
The machine of claim 1, wherein said housing further includes a casing for said pump, said casing being adjacent to said partition opposite said cylindrical section.
Claim 4
Dependent Claim
26 words
The machine of claim 1, further comprising a control circuit for said electromagnet, at least a portion of said circuit being installed in said additional section.
Claim 5
Dependent Claim
14 words
The machine of claim 1, wherein said partition is integral with said cylindrical section.
Claim 6
Dependent Claim
22 words
The machine of claim 1, wherein said additional section has an opening and said housing further includes a wall closing said opening.
Claim 7
Dependent Claim
38 words
The machine of claim 1, wherein said leg is hollow and further comprising a control circuit for said electromagnet, said circuit including a supporting panel disposed in said additional section and having a portion extending into said leg.
Claim 8
Dependent Claim
27 words
The machine of claim 6, wherein said panel is disposed in a substantially vertical plane and said portion thereof is located at the level of said extension.
Claim 9
Dependent Claim
44 words
The machine of claim 6, wherein said panel is disposed in a substantially vertical plane and said additional section has an opening adjacent to said panel, said housing further comprising a wall closing said opening and said wall including means for supporting said panel.
Claim 10
Dependent Claim
19 words
The machine of claim 8, wherein said supporting means includes at least partly resilient retaining protuberances on said wall.
Claim 11
Dependent Claim
50 words
The machine of claim 8, wherein said wall is substantially parallel to and spaced apart from said panel, said panel being disposed between said wall and said electromagnet and said wall having an inner side facing said panel, said supporting means being provided at the inner side of said wall.
Claim 12
Dependent Claim
28 words
The machine of claim 1, wherein said leg is hollow and further comprising a control circuit for said electromagnet, said circuit including a panel installed in said leg.
Claim 13
Dependent Claim
22 words
The machine of claim 11, wherein said panel is substantially horizontal and includes a portion disposed in the interior of said extension.
Claim 14
Dependent Claim
22 words
The machine of claim 11, wherein said leg comprises internal guide means and said panel is slidably received in said guide means.
Claim 15
Dependent Claim
40 words
The machine of claim 13, wherein said leg has a substantially horizontal bottom wall and said guide means comprises a plurality of elongated guide members adjacent to said bottom wall and having portions disposed in the interior of said extension.
Claim 16
Dependent Claim
30 words
The machine of claim 1, wherein said plastic material is an electrically insulating synthetic plastic material and further comprising electric terminals extending through and into the interior of said housing.
Claim 17
Dependent Claim
18 words
The machine of claim 15, wherein said terminals are sealingly embedded in the plastic material of said housing.
Claim 18
Dependent Claim
34 words
The machine of claim 16, further comprising a control circuit for said electromagnet, said circuit including a substantially vertical panel disposed in said additional section and having throughplating holes for portions of said terminals.
Claim 19
Dependent Claim
24 words
The machine of claim 1, wherein said partition includes an annular portion having an axial length substantially exceeding the thickness of said cylindrical section.
Claim 20
Dependent Claim
39 words
The machine of claim 1, wherein said partition has tapped bores and said housing further comprises a casing for said pump, and further comprising threaded fastener means securing said casing to said partition and extending into said tapped bores.
Claim 21
Dependent Claim
27 words
The machine of claim 19, wherein said partition has at least one socket and an insert in said socket, said tapped bores being provided in said insert.
Claim 22
Dependent Claim
26 words
The machine of claim 1, wherein said partition has holes and further comprising fastener means securing said electromagnet to said partition and extending into said holes.
References Cited (Backward Citations)
US1356131A
Cited
US3365597A
Cited
US2763796A
Cited
US2777963A
Cited
US3143677A
Cited
US3396288A
Cited
US3413925A
Cited
US3688635A
Cited
US3751188A
Cited
US3809935A
Cited
CA994846A
Cited
JPS5241911A
Cited
US4097894A
Cited
US4272225A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-08-26 | 1989-02-25 | 1989-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-26 | 1993-02-25 | 1993-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-26 | 1997-02-25 | 1997-08-27 | $7700.00 | Window Closed / Lapsed |