Patent US1621947A successfully refreshed from Google Patents.
Patent US4084924A successfully refreshed from Google Patents.
US4084924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump-motor assemblage for circulating a coolant
Assignee: Individual
•
Filing: 1977-02-25
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Granted: 1978-04-18
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Expires: 1997-02-25
Abstract
Abstract A motor-pump assemblage for circulating a coolant through a system requiring heat transfer has a motor casing filled with liquid and mounted on the motor drive shaft a flywheel keyed to the shaft and a freewheeling shroud rotatable relative to the shaft and the flywheel. This shroud encompasses the flywheel but is spaced apart therefrom and includes passages for ingress and egress of liquid into the space between the flywheel and the shroud and out of this space.
Inventors
- 👤 Alexander Ivanoff
- 👤 Victor Ivanoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:22
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/58; F04D29/586; F04D13/00; F04D13/02; F04D13/06; F04D13/0653
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
106 words
A motor-pump assemblage for circulating a coolant through an installation requiring heat transfer, said motor-pump assemblage comprising: a pump and an electric zero-leakage motor having an extended drive shaft operatively coupled to said pump; a flywheel mounted on said shaft intermediate the pump and the motor rotationally locked to the shaft; a freewheeling shroud encompassing said flywheel spaced apart therefrom and rotatable about said shaft and said flywheel, said shroud including passage means providing ingress and egress of liquid into and out of the space between the shroud and the flywheel; and a casing enclosing said motor, flywheel and shroud, said casing being filled with liquid.
Claim 2
Dependent Claim
106 words
A motor-pump assemblage for circulating a coolant through an installation requiring heat transfer, said motor-pump assemblage comprising: a pump and an electric zero-leakage motor having an extended drive shaft operatively coupled to said pump; a flywheel mounted on said shaft intermediate the pump and the motor rotationally locked to the shaft; a freewheeling shroud encompassing said flywheel spaced apart therefrom and rotatable about said shaft and said flywheel, said shroud including passage means providing ingress and egress of liquid into and out of the space between the shroud and the flywheel; and a casing enclosing said motor, flywheel and shroud, said casing being filled with liquid.
Claim 3
Dependent Claim
26 words
The assemblage according to claim 1 and comprising bearings encompassing the shaft and supporting the shroud for freewheeling about the shaft and relative to the flywheel.
Claim 4
Dependent Claim
17 words
The assemblage according to claim 2 wherein said bearings comprise a radial bearing and a thrust bearing.
Claim 5
Dependent Claim
13 words
The assemblage according to claim 1 wherein said shroud is made of metal.
Claim 6
Dependent Claim
14 words
The assemblage according to claim 4 wherein said shroud is made of carbon steel.
Claim 7
Dependent Claim
14 words
The assemblage according to claim 4 wherein said shroud is made of stainless steel.
Claim 8
Dependent Claim
28 words
The assemblage according to claim 1 wherein said flywheel and said shroud are mounted on a shaft portion protruding from the motor but spaced apart from the pump.
Claim 9
Dependent Claim
58 words
The assemblage according to claim 1 and comprising at least a second freewheeling shroud enclosing the first shroud spaced apart therefrom, said second shroud being freewheeling relative to the shaft, the first shroud and the flywheel and including passage means for ingress and egress into and out of the space between the first shroud and the second shroud.
Claim 10
Dependent Claim
23 words
The assemblage according to claim 8 wherein said shrouds are supported by bearings for freewheeling about the flywheel and relative to each other.
Claim 11
Dependent Claim
22 words
The assemblage according to claim 9 wherein each of said shrouds is supported by radial bearings and thrust bearings encompassing said 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) | 1981-04-17 | 1981-10-17 | 1982-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-17 | 1985-10-17 | 1986-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-17 | 1989-10-17 | 1990-04-18 | $7700.00 | Window Closed / Lapsed |