US3370896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspension of vertical shafts
Assignee: Associated Electrical Industries Ltd
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Filing: 1965-09-10
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Granted: 1968-02-27
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Expires: 1985-09-10
Abstract
No abstract record available.
Inventors
- 👤 Atkins Peter James Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:25
CPC Classifications
G; G01; G01R; G01R11/00; G01R11/02; G01R11/12; G01R11/14; F; F16; F16C; F16C32/00; F16C32/04; F16C32/0406; F16C32/0408; F16C32/0423; F16C32/0427; F16C32/044; F16C32/0444; F16C39/00; F16C39/06; F16C39/063; F16C17/00; F16C17/02; F16C2370/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
SUSPENSION MEANS FOR A VERTICAL SHAFT COMPRISING: (A) A FIRST SPIGOT PROVIDED ON THE SHAFT; (B) A FIRST MAGNETIC BODY FIXEDLY PROVIDED ON THE SHAFT ADJACENT THE FIRST SPIGOT; (C) A FIRST RING-LIKE PERMANENT MAGNET MOUNTED ON, AND A CLOSE FIT ABOUT, THE FIRST SPIGOT, AND HELD IN PLACE AXIALLY OF THE FIRST SPIGOT BY MAGNETIC ATTRACTION TO THE FIRST MAGNETIC BODY; (D) A HOUSING FOR THE SHAFT; (E) A SECOND SPIGOT PROVIDED IN THE HOUSING; (F) A SECOND MAGNETIC BODY FIXEDLY PROVIDED IN THE HOUSING ADJACENT THE SECOND SPIGOT; AND
Claim 2
Dependent Claim
91 words
SUSPENSION MEANS FOR A VERTICAL SHAFT COMPRISING: (A) A FIRST SPIGOT PROVIDED ON THE SHAFT; (B) A FIRST MAGNETIC BODY FIXEDLY PROVIDED ON THE SHAFT ADJACENT THE FIRST SPIGOT; (C) A FIRST RING-LIKE PERMANENT MAGNET MOUNTED ON, AND A CLOSE FIT ABOUT, THE FIRST SPIGOT, AND HELD IN PLACE AXIALLY OF THE FIRST SPIGOT BY MAGNETIC ATTRACTION TO THE FIRST MAGNETIC BODY; (D) A HOUSING FOR THE SHAFT; (E) A SECOND SPIGOT PROVIDED IN THE HOUSING; (F) A SECOND MAGNETIC BODY FIXEDLY PROVIDED IN THE HOUSING ADJACENT THE SECOND SPIGOT; AND
References Cited (Backward Citations)
US2254698A
Cited
US3107948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |