US3748066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submersible pump
Assignee: Marley Wylain Co LLC
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Filing: 1971-12-13
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Granted: 1973-07-24
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Expires: 1991-12-13
Abstract
Abstract A submersible pump driven by an electric motor and having the liquid inlet at the bottom and the outlet at the top, a sealed housing disposed above the inlet and enclosing the motor, a drive shaft extending downwardly from the motor and carrying an impeller between said housing and the inlet, a water jacket encircling the housing and having the outlet in its upper end and a passageway connecting the inlet with the lower portion of the jacket and said passageway and outlet located on diametrically opposite sides of the shaft axis so that water passing from the inlet to the outlet will move upwardly and around the housing through the jacket. The invention is further characterized by extending the drive shaft upwardly from the motor into a bushing formed in the housing to securely position the motor within the housing and by providing a spacer means between the motor and impeller for proper positioning of a seal around the drive shaft.
Inventors
- 👤 F Sully
- 👤 L Simer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:39
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/08; F04D29/10; F04D29/12; F04D29/126; F04D13/00; F04D13/02; F04D13/06; F04D13/08; F04D13/086; F04D29/58; F04D29/586
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
169 words
In a submersible pump a. a base adapted to be supported upon a horizontal surface and having an impeller compartment with an inlet in the bottom thereof spaced above the surface, b. a sealed inner housing mounted on the base and enclosing an electric motor having a rotary drive shaft extending downwardly into the compartment and carrying an impeller thereon, c. an outer housing mounted on the base and forming a hollow jacket around the sealed housing, d. the base having an internal passageway providing open communication between one side of the compartment and the jacket, and e. said outer housing having an outlet in the upper portion thereof located in a diametrically opposing position from said passageway relative to the drive shaft whereby as the impeller is driven by the motor liquid will be drawn upwardly through the inlet into the compartment and then forced through said passageway and upwardly through said jacket and around the inner housing to said outlet to withdraw heat from the inner housing.
Claim 2
Dependent Claim
169 words
In a submersible pump a. a base adapted to be supported upon a horizontal surface and having an impeller compartment with an inlet in the bottom thereof spaced above the surface, b. a sealed inner housing mounted on the base and enclosing an electric motor having a rotary drive shaft extending downwardly into the compartment and carrying an impeller thereon, c. an outer housing mounted on the base and forming a hollow jacket around the sealed housing, d. the base having an internal passageway providing open communication between one side of the compartment and the jacket, and e. said outer housing having an outlet in the upper portion thereof located in a diametrically opposing position from said passageway relative to the drive shaft whereby as the impeller is driven by the motor liquid will be drawn upwardly through the inlet into the compartment and then forced through said passageway and upwardly through said jacket and around the inner housing to said outlet to withdraw heat from the inner housing.
Claim 3
Dependent Claim
25 words
The subject matter of claim 1 wherein said compartment is circular and said passageway extends in a tangential direction from the compartment to the jacket.
Claim 4
Dependent Claim
35 words
The subject matter of claim 1 wherein a rotary seal is provided around the drive shaft between the motor and said impeller compartment, and including means for selectively positioning the seal axially of the shaft.
Claim 5
Dependent Claim
158 words
In a submersible pump including a pump housing having a downwardly opening impeller compartment in the bottom portion thereof, an electric motor mounted within the housing above the compartment and having a drive shaft extending downwardly through an annular boss in the housing into the compartment and having a liquid impeller mounted on the shaft within the compartment, a rotary seal disposed within the boss and surrounding the shaft between the motor and the impeller, said seal comprising a positioning washer press fit into the boss at a selected position along the shaft, upper and lower seal members of low friction material encircling the shaft below the positioning washer with the upper seal member irrotatably fixed to the washer, a bellows type retainer of resilient material encircling the shaft and held under axial compression between and irrotatably fixed to the lower seal member and the impeller to retain the upper and lower seal members in rotational sealing engagement.
Claim 6
Dependent Claim
158 words
In a submersible pump including a pump housing having a downwardly opening impeller compartment in the bottom portion thereof, an electric motor mounted within the housing above the compartment and having a drive shaft extending downwardly through an annular boss in the housing into the compartment and having a liquid impeller mounted on the shaft within the compartment, a rotary seal disposed within the boss and surrounding the shaft between the motor and the impeller, said seal comprising a positioning washer press fit into the boss at a selected position along the shaft, upper and lower seal members of low friction material encircling the shaft below the positioning washer with the upper seal member irrotatably fixed to the washer, a bellows type retainer of resilient material encircling the shaft and held under axial compression between and irrotatably fixed to the lower seal member and the impeller to retain the upper and lower seal members in rotational sealing engagement.
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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |