Patent US2066763A successfully refreshed from Google Patents.
US3897178A
Expired / Lapsed
US
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Pumping system
Assignee: Frankl and Kirchner GmbH and Co KG
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Filing: 1973-09-10
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Granted: 1975-07-29
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Expires: 1993-09-10
Abstract
Abstract A pumping system comprising a commutator motor and a directly driven pump, the motor being surrounded over substantially its entire periphery by a cooling jacket loaded with the liquid to be pumped and at least in part formed of the double wall of the motor housing, the motor further being completely sealed from the cooling jacket and being provided at its center with a ventilator mounted on the shaft for the purpose of air circulation. The improvements include mounting the commutator in the vicinity of the pump side of the motor, said pump side also being cooled, and mounting the ventilator at the opposite end of the shaft to allow for particularly effective and compact cooling of the motor.
Inventors
- 👤 Herbert Palloch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:20
CPC Classifications
F; F04; F04D; F04D13/00; F04D13/02; F04D13/06; F04D29/00; F04D29/08; F04D29/10; F04D29/12; F04D29/126; F04D29/58; F04D29/5806; F04D29/66; F04D29/669; H; H02; H02K; H02K5/00; H02K5/04; H02K5/20; H02K5/203; H02K9/00; H02K9/10; H02K9/28; F05; F05B; F05B2240/00; F05B2240/70; F05D; F05D2260/00; F05D2260/60; F05D2260/602; F05D2260/6022; H02K11/00; H02K5/12; H02K5/124; H02K7/00; H02K7/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
166 words
In a pumping system comprising a commutator motor having a housing, a shaft, a commutator, carbon brushes and bearing endcovers at the pump side and the opposite side thereof, a pump directly driven by said motor, a cooling jacket formed at least in part by a double-walled design of said motor housing surrounding substantially the entire periphery of said motor, filling means for filling said cooling jacket with the liquid to be pumped when in use, said motor being completely sealed from said cooling jacket, and ventilator means including a ventilator mounted on said shaft for forcing air circulation at the center of said motor, the improvements wherein: said pump-side bearing end-cover is surrounded by said cooling jacket; said commutator is mounted in the region of said pump-side bearing end-cover; said motor housing has covers therein for outwardly shielding the carbon brushes of said commutator; and said ventilator is mounted in the region within the bearing end cover which is opposite to that at the pump-side.
Claim 2
Dependent Claim
166 words
In a pumping system comprising a commutator motor having a housing, a shaft, a commutator, carbon brushes and bearing endcovers at the pump side and the opposite side thereof, a pump directly driven by said motor, a cooling jacket formed at least in part by a double-walled design of said motor housing surrounding substantially the entire periphery of said motor, filling means for filling said cooling jacket with the liquid to be pumped when in use, said motor being completely sealed from said cooling jacket, and ventilator means including a ventilator mounted on said shaft for forcing air circulation at the center of said motor, the improvements wherein: said pump-side bearing end-cover is surrounded by said cooling jacket; said commutator is mounted in the region of said pump-side bearing end-cover; said motor housing has covers therein for outwardly shielding the carbon brushes of said commutator; and said ventilator is mounted in the region within the bearing end cover which is opposite to that at the pump-side.
Claim 3
Dependent Claim
76 words
A pumping system in accordance with claim 1 wherein said motor includes a pump-side bearing for rotatably supporting said shaft and a pump-side sealing means for substantially preventing liquid from entering said pump-side bearing end-cover, and further including a centrifugal disk mounted coaxially on said shaft and said pump-side bearing end-cover has a leakage water channel associated with said disk, said disk and said channel being provided between said pump-side sealing means and said pump-side bearing.
Claim 4
Dependent Claim
34 words
A pumping system in accordance with claim 1 wherein said cooling jacket consists in part of a sleeve surrounding said motor housing and removably mounted on the side of said motor opposite said pump.
Claim 5
Dependent Claim
31 words
A pumping system in accordance with claim 3 wherein said sleeve is tightly connected at the pump-side edge thereof with the outer jacket of the double-walled part of said motor housing.
Claim 6
Dependent Claim
50 words
A pumping system in accordance with claim 1 wherein said filling means includes an impeller directly mounted on said shaft at the motor-side of said pump and further including an annular slit means in the motor-side of said pump for serving as communication between said impeller and said cooling jacket.
Claim 7
Dependent Claim
28 words
A pumping system in accordance with claim 1 further including an omnidirectionally sealed soundproof cover and a handle connected thereto, said cover surrounding said motor and said pump.
References Cited (Backward Citations)
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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) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |