Patent US3196940A successfully refreshed from Google Patents.
US3196940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling of sealed enclosure
Assignee: Espey Mfg and Electronics Corp
•
Filing: 1963-09-03
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Granted: 1965-07-27
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Expires: 1983-09-03
Abstract
No abstract record available.
Inventors
- 👤 Saslow Seymour
- 👤 Knauth Johannes Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:31
CPC Classifications
H; H02; H02K; H02K9/00; F; F04; F04D; F04D25/00; F04D25/02; F04D25/06; F04D25/0606; F04D25/0613
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN A HEAT EXCHANGER WHEREIN EQUIPMENT IN A SUBSTANTIALLY SEALED ENCLOSURE LOCATED IN A CONFINED AREA IS TO BE COOLING WALL OF THE CLOSURE, IN COMBINATION, A WALL TO ACT AS A HEAT EXCHANGER; A HOLLOW CYLINDRICAL STATOR MOUNTED WITHIN SAID ENCLOSURE ON SAID WALL AROUND A SMALL APERTURE THEREIN; IMPELLER MEANS ON THE OUTER SIDE OF SAID WALL OPPOSITE SAID STATOR, A DRIVEN SHAFT CONNECTED TO SAID IMPELLER MEANS JOURNALED IN SAID STATOR PASSING THROUGH SAID SMALL APERTURE IN THE WALL AND, MEANS FOR BRINGING GASES WITHIN THE ENCLOSURE TO SAID WALL WHERE SAID GASES ARE COOLED AND FOR CIRCULATING THE COOLED GASES WITHIN THE ENCLOSURE, SAID MEANS COMPRISING: A CUP-SHAPED SQUIRREL CAGE ROTOR MOUNTED SAID STATOR WITH A RADIAL END WALL COUPLED AT ITS CENTER TO SAID DRIVE SHAFT, THE OUTER SURFACE OF SAID ROTOR BEING SMOOTH.
Claim 2
Dependent Claim
139 words
IN A HEAT EXCHANGER WHEREIN EQUIPMENT IN A SUBSTANTIALLY SEALED ENCLOSURE LOCATED IN A CONFINED AREA IS TO BE COOLING WALL OF THE CLOSURE, IN COMBINATION, A WALL TO ACT AS A HEAT EXCHANGER; A HOLLOW CYLINDRICAL STATOR MOUNTED WITHIN SAID ENCLOSURE ON SAID WALL AROUND A SMALL APERTURE THEREIN; IMPELLER MEANS ON THE OUTER SIDE OF SAID WALL OPPOSITE SAID STATOR, A DRIVEN SHAFT CONNECTED TO SAID IMPELLER MEANS JOURNALED IN SAID STATOR PASSING THROUGH SAID SMALL APERTURE IN THE WALL AND, MEANS FOR BRINGING GASES WITHIN THE ENCLOSURE TO SAID WALL WHERE SAID GASES ARE COOLED AND FOR CIRCULATING THE COOLED GASES WITHIN THE ENCLOSURE, SAID MEANS COMPRISING: A CUP-SHAPED SQUIRREL CAGE ROTOR MOUNTED SAID STATOR WITH A RADIAL END WALL COUPLED AT ITS CENTER TO SAID DRIVE SHAFT, THE OUTER SURFACE OF SAID ROTOR BEING SMOOTH.
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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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |