US3914072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pumping assembly
Assignee: Marley Wylain Co LLC
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Filing: 1974-11-19
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Granted: 1975-10-21
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Expires: 1994-11-19
Abstract
Abstract A fluid pump assembly in which an electrically-operated motor is operatively connected to an impeller disposed in the volute portion of a pumping housing. A seal plate of a dielectric material extends within an opening formed in the housing for insulating the housing from the electrical motor, and a seal assembly cooperates with the shaft assembly connecting the motor to the impeller for preventing the leakage of fluid from the housing. A sleeve of a dielectric material is molded integral over the shaft assembly and has a flanged portion extending radially outwardly to direct any fluid outwardly from the shaft assembly.
Inventors
- 👤 William N Rowley
- 👤 Gordon F Ehret
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:52
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/36; F04; F04D; F04D29/00; F04D29/08; F04D29/10; F04D29/12; F04D29/126; Y; Y10; Y10S; Y10S277/00; Y10S277/919
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
137 words
A fluid pump assembly comprising a pump housing defining an opening, an impeller disposed in said housing, shaft means extending through said opening for operatively connecting said impeller to an electric motor, a seal plate of a dielectric material extending withiN said opening for insulating said housing from said electric motor, said seal plate defining an opening for receiving said shaft means, seal means cooperating with said shaft means and said seal plate for preventing the leakage of fluid from said housing, and a sleeve of a dielectric material extending over said shaft means and extending from said impeller to a point external of said seal plate opening, said sleeve having a flanged portion extending radially outward from a portion thereof external of said seal plate opening to direct any fluid radially outward from said shaft means.
Claim 2
Dependent Claim
137 words
A fluid pump assembly comprising a pump housing defining an opening, an impeller disposed in said housing, shaft means extending through said opening for operatively connecting said impeller to an electric motor, a seal plate of a dielectric material extending withiN said opening for insulating said housing from said electric motor, said seal plate defining an opening for receiving said shaft means, seal means cooperating with said shaft means and said seal plate for preventing the leakage of fluid from said housing, and a sleeve of a dielectric material extending over said shaft means and extending from said impeller to a point external of said seal plate opening, said sleeve having a flanged portion extending radially outward from a portion thereof external of said seal plate opening to direct any fluid radially outward from said shaft means.
Claim 3
Dependent Claim
35 words
The assembly of claim 1 wherein said seal means includes a first portion secured to said shaft means and a second portion secured relative to said seal plate and permitting rotation of said shaft means.
Claim 4
Dependent Claim
30 words
The assembly of claim 1 wherein said shaft means comprises an output shaft driven by said motor, and an extension shaft connected to said impeller and to said output shaft.
Claim 5
Dependent Claim
24 words
The assembly of claim 1 wherein a surface of said seal plate engages the wall of said housing defining said opening in said housing.
Claim 6
Dependent Claim
32 words
The assembly of claim 1 further comprising a support bracket for supporting said motor relative to said housing, a portion of said seal plate extending between said support bracket and said housing.
Claim 7
Dependent Claim
15 words
The assembly of claim 1 wherein said sleeve is molded integral with said shaft means.
Claim 8
Dependent Claim
102 words
A fluid pump assembly comprising a pump housing defining an opening, an impeller disposed in said housing, shaft means extending through said opening for operatively connecting said impeller to an electric motor, seal means cooperating with said shaft means for preventing the leakage of fluid from said housing, and a sleeve of a dielectric material extending molded integral with said shaft means and extending from said impeller to a point external of said housing opening, said sleeve having a flanged portion extending radially outward from a portion thereof external of said housing to direct any fluid radially outward from said shaft means.
Claim 9
Dependent Claim
102 words
A fluid pump assembly comprising a pump housing defining an opening, an impeller disposed in said housing, shaft means extending through said opening for operatively connecting said impeller to an electric motor, seal means cooperating with said shaft means for preventing the leakage of fluid from said housing, and a sleeve of a dielectric material extending molded integral with said shaft means and extending from said impeller to a point external of said housing opening, said sleeve having a flanged portion extending radially outward from a portion thereof external of said housing to direct any fluid radially outward from said shaft means.
Claim 10
Dependent Claim
39 words
The assembly of claim 7 wherein said shaft means comprises an output shaft driven by said motor, and an extension shaft connected to said impeller and to said output shaft, said sleeve being molded integral with said extension shaft.
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) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |