US3685926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submersible pump assembly
Assignee: Individual
•
Filing: 1970-11-02
•
Granted: 1972-08-22
•
Expires: 1990-11-02
Abstract
Abstract A submersible electric motor pump assembly for pumping a liquid and having a motor and housing comprising at least the motor stator including the appertaining windings being embedded and totally enclosed in an electrically insulating mass. The mass is provided with heat conducting means insulated electrically from the motor stator for conducting heat from the motor stator and the mass to positions whereby the heat is dissipated by the liquid to be pumped.
Inventors
- 👤 Albert Blum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:54
CPC Classifications
F; F04; F04D; F04D13/00; F04D13/02; F04D13/06; F04D29/00; F04D29/58; F04D29/586; F04D29/5893; H; H02; H02K; H02K5/00; H02K5/04; H02K5/12; H02K9/00; H02K9/22; H02K9/223; H02K9/227
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
85 words
A submersible electric motor pump assembly for pumping a liquid and having a motor and housing; comprising at least the motor stator including the appertaining windings being embedded and totally enclosed in an electrically insulating mass of synthetic plastic material, said mass having heat conducting means in the form of embedded metallic means disposed about said motor staTor and insulated electrically therefrom for conducting heat from said motor stator and said mass to positions whereby the heat is dissipated by the liquid to be pumped.
Claim 2
Dependent Claim
85 words
A submersible electric motor pump assembly for pumping a liquid and having a motor and housing; comprising at least the motor stator including the appertaining windings being embedded and totally enclosed in an electrically insulating mass of synthetic plastic material, said mass having heat conducting means in the form of embedded metallic means disposed about said motor staTor and insulated electrically therefrom for conducting heat from said motor stator and said mass to positions whereby the heat is dissipated by the liquid to be pumped.
Claim 3
Dependent Claim
22 words
The assembly according to claim 1, wherein said metallic means includes at least one cylindrical metal insert extending around said motor stator.
Claim 4
Dependent Claim
20 words
The assembly according to claim 2, wherein said metal insert is foraminous or perforated or provided with apertures or gaps.
Claim 5
Dependent Claim
20 words
The assembly according to claim 2, wherein said metal insert is formed so as to enlarge the surface area thereof.
Claim 6
Dependent Claim
14 words
The assembly according to claim 4, wherein said metal insert is provided with ribs.
Claim 7
Dependent Claim
19 words
The assembly according to claim 2, wherein said metal insert is formed at least in part of wire mesh.
Claim 8
Dependent Claim
16 words
The assembly according to claim 2, wherein said motor stator and said metal insert are co-axial.
Claim 9
Dependent Claim
32 words
The assembly according to claim 2, wherein said metal insert has a portion which is not covered by said mass and is cooled by direct contact with said liquid to be pumped.
Claim 10
Dependent Claim
27 words
The assembly according to claim 2, wherein said metal insert is incorporated in an external housing wall which is formed of said mass and surrounds the motor.
Claim 11
Dependent Claim
35 words
The assembly according to claim 2, wherein said metal insert is formed with or connected for thermal conduction to a wall portion of the housing cooled by direct contact with said liquid to be pumped.
Claim 12
Dependent Claim
23 words
The assembly according to claim 10, wherein the said wall portion is specially shaped so as to increase its heat dissipating surface area.
Claim 13
Dependent Claim
14 words
The assembly according to claim 11, wherein said wall portion is formed with ribs.
Claim 14
Dependent Claim
22 words
The assembly according to claim 2, wherein said metal insert has a portion which constitutes a mounting for a motor shaft bearing.
Claim 15
Dependent Claim
13 words
The assembly according to claim 1, wherein said electrically insulating mass is casted.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |