US3969043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process cooled submersible pump and motor assembly
Assignee: LGC LIQUIDATING Inc
•
Filing: 1974-03-25
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Granted: 1976-07-13
•
Expires: 1994-03-25
Abstract
Abstract A submersible pump having a volume chamber with a volute wall integrally formed with and extending internally to a hermetically sealed housing. A fixed bearing is pressed in the interior wall of the volume chamber and is so established to determine the axial alignment of a drive shaft passing therethrough. The drive shaft is also supported by a self-aligning bearing disposed within the housing. An impeller, disposed within the volume chamber, is connected to the drive shaft. A drive motor enclosed in the housing rotates the drive shaft and the impeller, the motor being surrounded by a coolant fluid therein. Inlet and outlet ports are provided to complete the pump. As the impeller is rotated to pump a process fluid, the coolant fluid in the housing serves to lubricate the bearings and to effect heat transfer from the motor and bearings through the walls of the volume chamber to the process fluid. One embodiment of the present invention provides a submersible pump and motor assembly that is insulated in a manner that assures complete electrical integrity of the assembly.
Inventors
- 👤 Hugh H. Bright
- 👤 Lee W. Davis
- 👤 Frank J. Stanaszek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:24
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/04; F04D29/046; F04D29/0465; F04D13/00; F04D13/02; F04D13/06; F04D29/041; F04D29/0413; F04D29/043; F04D29/40; F04D29/42; F04D29/426; F04D29/58; F04D29/586
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
127 words
A pump and motor assembly, comprising: a housing assembly; a first bearing securedly connected to said housing assembly; a self aligning second bearing adjustably connected to said housing assembly and held in spatial relationship to said first bearing; a drive shaft rotatingly held by said first and second bearings; a volume chamber having a volute wall extending into said housing assembly; an impeller disposed within said volume chamber and connected to said drive shaft; motor means for rotating said drive shaft; seal means for providing a seal between said volume chamber and said drive shaft; inlet port means for providing fluid communication with said volume chamber; and, outlet port means for providing fluid communication with the volume chamber at a location removed from said inlet port means.
Claim 2
Dependent Claim
127 words
A pump and motor assembly, comprising: a housing assembly; a first bearing securedly connected to said housing assembly; a self aligning second bearing adjustably connected to said housing assembly and held in spatial relationship to said first bearing; a drive shaft rotatingly held by said first and second bearings; a volume chamber having a volute wall extending into said housing assembly; an impeller disposed within said volume chamber and connected to said drive shaft; motor means for rotating said drive shaft; seal means for providing a seal between said volume chamber and said drive shaft; inlet port means for providing fluid communication with said volume chamber; and, outlet port means for providing fluid communication with the volume chamber at a location removed from said inlet port means.
Claim 3
Dependent Claim
20 words
The pump and motor assembly as claimed in claim 1 wherein the motor means is enclosed within said housing assembly.
Claim 4
Dependent Claim
24 words
The pump and motor assembly as claimed in claim 2 wherein the housing assembly contains a coolant fluid that substantially surrounds the motor means.
Claim 5
Dependent Claim
40 words
The pump and motor assembly as claimed in claim 3 as further defined to include means for establishing coolant fluid communication within said housing assembly to both said first and second bearings to submerse said bearings in said coolant fluid.
Claim 6
Dependent Claim
18 words
The pump and motor assembly as claimed in claim 4 wherein the coolant fluid is a dielectric oil.
Claim 7
Dependent Claim
36 words
The pump and motor assembly as claimed in claim 5 wherein the volume chamber is molded of a material having a thermal conductivity of at least 1.4 BTU-inch per hour per square foot per degree Fahrenheit.
Claim 8
Dependent Claim
36 words
The pump and motor assembly as claimed in claim 6 wherein the housing assembly includes a housing cover, and said housing cover, said volume chamber, and said outlet port means are integrally molded of said material.
Claim 9
Dependent Claim
23 words
The pump and motor assembly of claim 1 wherein the motor means rotating said drive shaft is electrically insulated from said drive shaft.
Claim 10
Dependent Claim
16 words
The pump and motor assembly of claim 8 wherein the second bearing is a plastic bearing.
Claim 11
Dependent Claim
18 words
The pump and motor assembly of claim 9 wherein the impeller is made of an electrically non-conductive material.
Claim 12
Dependent Claim
19 words
The pump and motor assembly of claim 1 wherein the drive shaft is made from an electrically non-conductive material.
Claim 13
Dependent Claim
150 words
A pump and motor assembly, comprising: a molded housing assembly; a volume chamber having a volute wall and an interior wall formed integrally with said housing, said volute wall and interior wall disposed within said housing; a fixed bearing securedly connected to said interior wall; an aligning bearing connected to said housing assembly and held thereby in spatial relationship to said fixed bearing; a drive shaft passing through and bearingly supported by said fixed and adjusting bearings; an impeller disposed within said volume chamber and connected to said drive shaft; motor means for providing a seal between said volume chamber and said drive shaft; seal means for providing a seal between said volume chamber and said drive shaft; inlet port means for providing fluid communication with said volume chamber; and, outlet port means for providing fluid communication with said volume chamber at a location removed from said inlet port means.
Claim 14
Dependent Claim
150 words
A pump and motor assembly, comprising: a molded housing assembly; a volume chamber having a volute wall and an interior wall formed integrally with said housing, said volute wall and interior wall disposed within said housing; a fixed bearing securedly connected to said interior wall; an aligning bearing connected to said housing assembly and held thereby in spatial relationship to said fixed bearing; a drive shaft passing through and bearingly supported by said fixed and adjusting bearings; an impeller disposed within said volume chamber and connected to said drive shaft; motor means for providing a seal between said volume chamber and said drive shaft; seal means for providing a seal between said volume chamber and said drive shaft; inlet port means for providing fluid communication with said volume chamber; and, outlet port means for providing fluid communication with said volume chamber at a location removed from said inlet port means.
Claim 15
Dependent Claim
22 words
The pump and motor assembly as claimed in claim 8 wherein the housing assembly is substantially filled with a lubricating coolant fluid.
Claim 16
Dependent Claim
38 words
The pump and motor assembly as claimed by claim 9 further defined to include means for establishing coolant fluid communication within said housing assembly to both first and second bearings to submerse said bearings in said coolant fluid.
Claim 17
Dependent Claim
18 words
The pump and motor assembly as claimed in claim 10 wherein the coolant fluid is a dielectric oil.
Claim 18
Dependent Claim
38 words
The pump and motor assembly as claimed in claim 15 wherein the housing and volume chamber are made of a material having a thermal conductivity of at least 1.4 BTU-inch per hour per square foot per degree Fahrenheit.
Claim 19
Dependent Claim
37 words
The pump and motor assembly as claimed in claim 16 wherein the housing assembly includes a housing cover, and said housing cover, said volume chamber, and said outlet port means are integrally molded of the same material.
Claim 20
Dependent Claim
24 words
The pump and motor assembly as claimed in claim 17 wherein said interior wall of said volume chamber is molded about said fixed bearing.
Claim 21
Dependent Claim
23 words
The pump and motor assembly of claim 8 wherein the motor means rotating said drive shaft is electrically insulated from said drive shaft.
Claim 22
Dependent Claim
16 words
The pump and motor assembly of claim 9 wherein the second bearing is a plastic bearing.
Claim 23
Dependent Claim
18 words
The pump and motor assembly of claim 10 wherein the impeller is made of an electrically non-conductive material.
Claim 24
Dependent Claim
19 words
The pump and motor assembly of claim 12 wherein the drive shaft is made from an electrically non-conductive material.
Claim 25
Dependent Claim
161 words
A pump and motor assembly, comprising: a molded housing assembly; a volume chamber having a volute wall and an interior wall formed integrally with said housing, said volute wall and interior wall disposed within said housing and molded of the same material as the housing assembly; a drive shaft; a fixed bearing securedly connected to said interior wall and bearingly supporting said drive shaft; aligning bearing means bearingly supporting said drive shaft at a location removed from said fixed bearing, said aligning bearing means electrically insulated from said drive shaft; an impeller disposed within said volume chamber and connected to said drive shaft; electric motor means disposed within said housing for rotating said drive shaft; seal means for providing a seal between said volume chamber and said drive shaft; inlet port means for providing fluid communication with said volume chamber; and, outlet port means for providing fluid communication with said volume chamber at a location removed from said inlet port means.
Claim 26
Dependent Claim
161 words
A pump and motor assembly, comprising: a molded housing assembly; a volume chamber having a volute wall and an interior wall formed integrally with said housing, said volute wall and interior wall disposed within said housing and molded of the same material as the housing assembly; a drive shaft; a fixed bearing securedly connected to said interior wall and bearingly supporting said drive shaft; aligning bearing means bearingly supporting said drive shaft at a location removed from said fixed bearing, said aligning bearing means electrically insulated from said drive shaft; an impeller disposed within said volume chamber and connected to said drive shaft; electric motor means disposed within said housing for rotating said drive shaft; seal means for providing a seal between said volume chamber and said drive shaft; inlet port means for providing fluid communication with said volume chamber; and, outlet port means for providing fluid communication with said volume chamber at a location removed from said inlet port means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-13 | 1980-01-12 | 1980-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-13 | 1984-01-12 | 1984-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-13 | 1988-01-12 | 1988-07-13 | $7700.00 | Window Closed / Lapsed |