Patent US3128103A successfully refreshed from Google Patents.
US3128103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal sleeves for boiler water circulating pumps
Assignee: Combustion Engineering Inc
•
Filing: 1959-10-02
•
Granted: 1964-04-07
•
Expires: 1979-10-02
Abstract
No abstract record available.
Inventors
- 👤 Ravese Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:22
CPC Classifications
F; F04; F04D; F04D7/00; F04D7/02; F04D7/06; F22; F22D; F22D11/00; F22D11/02; Y; Y10; Y10S; Y10S277/00; Y10S277/93
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A PUMP ADAPTED TO CIRCULATE BOILER FLUID AT A RELATIVELY HIGH TEMPERATURE AND PRESSURE COMPRISING A HOUSING HAVING FIRST PASSAGEWAY MEANS FORMED IN AND DEFINED BY SAID HOUSING ADAPTED TO CONVEY SAID BOILER FLUID, SECOND PASSAGEWAY MEANS FORMED IN AND DEFINED BY SAID HOUSING, FLUID CONVEYING MEANS DISPOSED IN SAID SECOND PASSAGEWAY MEANS ADAPTED TO BE CONNECTED TO A SOURCE OF FLUID THAT IS RELATIVELY COOL AS COMPARED TO SAID BOILER FLUID BEING CIRCULATED BY SAID PUMP, SAID FLUID CONVEYING MEANS INCLUDING A SLEEVE MOUNTED WITHIN THE SECOND PASSAGEWAY MEANS HAVING, AT LEAST IN ONE PORTION, AN OUTSIDE DIMENSION SMALLER THAN THE INSIDE DIMENSION OF THE SECOND PASSAGEWAY MEANS SO AS TO PROVIDE A SPACE THEREBETWEEN, MEANS PROVIDING FLUID COMMUNICATION BETWEEN THE SPACE AND THE INTERIOR OF THE SLEEVE TO PERMIT
Claim 2
Dependent Claim
131 words
A PUMP ADAPTED TO CIRCULATE BOILER FLUID AT A RELATIVELY HIGH TEMPERATURE AND PRESSURE COMPRISING A HOUSING HAVING FIRST PASSAGEWAY MEANS FORMED IN AND DEFINED BY SAID HOUSING ADAPTED TO CONVEY SAID BOILER FLUID, SECOND PASSAGEWAY MEANS FORMED IN AND DEFINED BY SAID HOUSING, FLUID CONVEYING MEANS DISPOSED IN SAID SECOND PASSAGEWAY MEANS ADAPTED TO BE CONNECTED TO A SOURCE OF FLUID THAT IS RELATIVELY COOL AS COMPARED TO SAID BOILER FLUID BEING CIRCULATED BY SAID PUMP, SAID FLUID CONVEYING MEANS INCLUDING A SLEEVE MOUNTED WITHIN THE SECOND PASSAGEWAY MEANS HAVING, AT LEAST IN ONE PORTION, AN OUTSIDE DIMENSION SMALLER THAN THE INSIDE DIMENSION OF THE SECOND PASSAGEWAY MEANS SO AS TO PROVIDE A SPACE THEREBETWEEN, MEANS PROVIDING FLUID COMMUNICATION BETWEEN THE SPACE AND THE INTERIOR OF THE SLEEVE TO PERMIT
References Cited (Backward Citations)
DE498482C
Cited
US2215532A
Cited
US2414788A
Cited
US2442019A
Cited
US2497780A
Cited
US2622417A
Cited
US2608380A
Cited
DE919084C
Cited
GB803306A
Cited
US2929646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |