Patent US4261369A successfully refreshed from Google Patents.
Patent US3369137A successfully refreshed from Google Patents.
US3369137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansion bag unit for liquid filled submersible motors
Assignee: AO Smith Corp
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Filing: 1965-08-06
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Granted: 1968-02-13
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Expires: 1985-08-06
Abstract
No abstract record available.
Inventors
- 👤 Robert A Sanger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:30
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/12; H02K5/132
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
IN A SUBMERSIBLE MOTOR HAVING A LOWER END FRAME PERMITTING COMMUNICATION WITH THE INSIDE OF THE MOTOR, THE IMPROVEMENT COMPRISING AN EXTENSION OF THE LOWER END FRAME HAVING A CIRCUMFERENTIAL RECESS ON THE EXTERIOR SURFACE AND SPACED SLIGHTLY FROM THE LOWER END, A FLEXIBLE BAG TELESCOPED OVER THE END OF THE EXTENSION AND HAVING AN INTEGRAL ENLARGED PORTION MATING WITH THE RECESS, AND A PROTECTIVE TUBULAR MEMBER ENCIRCLING THE BAG AND PROJECTING AXIALLY OVER THE EXTENSION TO COMPRESS SAID ENLARGED PORTION AND PROVIDE A LIQUID TIGHT PRESSURE ATTACHMENT OF THE BAG TO THE MOTOR.
Claim 2
Dependent Claim
94 words
IN A SUBMERSIBLE MOTOR HAVING A LOWER END FRAME PERMITTING COMMUNICATION WITH THE INSIDE OF THE MOTOR, THE IMPROVEMENT COMPRISING AN EXTENSION OF THE LOWER END FRAME HAVING A CIRCUMFERENTIAL RECESS ON THE EXTERIOR SURFACE AND SPACED SLIGHTLY FROM THE LOWER END, A FLEXIBLE BAG TELESCOPED OVER THE END OF THE EXTENSION AND HAVING AN INTEGRAL ENLARGED PORTION MATING WITH THE RECESS, AND A PROTECTIVE TUBULAR MEMBER ENCIRCLING THE BAG AND PROJECTING AXIALLY OVER THE EXTENSION TO COMPRESS SAID ENLARGED PORTION AND PROVIDE A LIQUID TIGHT PRESSURE ATTACHMENT OF THE BAG TO THE MOTOR.
References Cited (Backward Citations)
US3052804A
Cited
US3270224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |