Patent US3859008A successfully refreshed from Google Patents.
US3859008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump with offset inflow and discharge chambers
Assignee: Andritz AG
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Filing: 1972-06-13
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Granted: 1975-01-07
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Expires: 1992-06-13
Abstract
Abstract This invention relates to an improvement in a pump for high operating pressures, particularly a main coolant pump for pressurized water or boiling water reactors comprising a pressure housing, a vertical pump shaft having an impeller thereon, a distributor surrounding the impeller, and suction and discharge connections, the pump shaft having an axis normal to the axis of the suction and the discharge connections. The improvement comprises a separator plate having an opening therein and dividing the pressure housing into a lower section constituting an inflow chamber and an upper section constituting a discharge chamber, the upper section containing the impeller and the distributor, and the inflow chamber and the discharge chamber constituting rotational chambers which are mechanically machined.
Inventors
- 👤 Rudolf Wieser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:01
CPC Classifications
G; G21; G21C; G21C15/00; G21C15/24; G21C15/243; F; F04; F04D; F04D29/00; F04D29/40; F04D29/42; F04D29/426; F04D3/00; F04D3/005; F04D7/00; F04D7/02; F04D7/08; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
117 words
In a pump for high operating pressures, particularly a main coolant pump for pressurized water or boiling water reactors, comprising a pressure housing, a vertical pump shaft having an impeller thereon, a distributor surrounding the impeller, and suction and discharge connections, said pump shaft having an axis normal to the axis of said suction and discharge connections, the improvement comprising separator plate means having an opening therein and dividing said pressure housing into a lower section constituting an inflow chamber means and an upper section constituting a discharge chamber means, said upper section containing said impeller and distributor, and the axis of said inflow chamber means being displaced from the pump shaft axis toward the suction side.
Claim 2
Dependent Claim
117 words
In a pump for high operating pressures, particularly a main coolant pump for pressurized water or boiling water reactors, comprising a pressure housing, a vertical pump shaft having an impeller thereon, a distributor surrounding the impeller, and suction and discharge connections, said pump shaft having an axis normal to the axis of said suction and discharge connections, the improvement comprising separator plate means having an opening therein and dividing said pressure housing into a lower section constituting an inflow chamber means and an upper section constituting a discharge chamber means, said upper section containing said impeller and distributor, and the axis of said inflow chamber means being displaced from the pump shaft axis toward the suction side.
Claim 3
Dependent Claim
117 words
In a pump for high operating pressures, particularly a main coolant pump for pressurized water or boiling water reactors, comprising a pressure housing, a vertical pump shaft having an impeller thereon, a distributor surrounding the impeller, and suction and discharge connections, said pump shaft having an axis normal to the axis of said suction and discharge connections, the improvement comprising separator plate means having an opening therein and dividing said pressure housing into a lower section constituting an inflow chamber means and an upper section constituting a discharge chamber means, said upper section containing said impeller and distributor, and the axis of said discharge chamber means being displaced from the pump shaft axis toward the pressure side.
Claim 4
Dependent Claim
117 words
In a pump for high operating pressures, particularly a main coolant pump for pressurized water or boiling water reactors, comprising a pressure housing, a vertical pump shaft having an impeller thereon, a distributor surrounding the impeller, and suction and discharge connections, said pump shaft having an axis normal to the axis of said suction and discharge connections, the improvement comprising separator plate means having an opening therein and dividing said pressure housing into a lower section constituting an inflow chamber means and an upper section constituting a discharge chamber means, said upper section containing said impeller and distributor, and the axis of said discharge chamber means being displaced from the pump shaft axis toward the pressure side.
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) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |