Patent US3256451A successfully refreshed from Google Patents.
US3256451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrodynamic bearings in a motor
Assignee: Forgflo Corp
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Filing: 1963-02-15
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Granted: 1966-06-14
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Expires: 1983-02-15
Abstract
No abstract record available.
Inventors
- 👤 Raldo E Shipman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:36
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/06; F16C32/0681; F16C32/0696; H; H02; H02K; H02K5/00; H02K5/04; H02K5/16; H02K5/167; H02K5/1672
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
AN AIR BEARING AND MOTOR ASSEMBLY COMPRISING A SHAFT HAVING AT EACH END A ROTATABLE MEMBER HAVING A PERIPHERAL SURFACE INCLUDING A SPHERICAL ZONE, AN ELECTRIC MOTOR ROTOR SECURED TO SAID SHAFT AT A POINT BETWEEN SAID ROTATABLE MEMBERS, A CASING, A STATOR SUPPORTED IN SAID CASING, AND CO-OPERATING WITH SAID ROTOR, A SOCKET MEMBER HAVING AN INTERNAL SPHERICAL SURFACE MATCHING THAT OF SAID ROTATABLE MEMBER ENCLOSING EACH ROTATABLE MEMBER, SAID SOCKET MEMBERS BEING RIGIDLY SUPPORTED IN SAID CASING AT A FIXED DISTANCE APART, AND MEANS FOR INTRODUCING AIR UNDER PRESSURE BETWEEN THE SPHERICAL SURFACES OF SAID ROTATABLE AND SOCKET MEMBERS, THE ROTATABLE MEMBER AT ONE END OF THE SHAFT BEING FIXED TO THE SHAFT, WHILE THE ROTATABLE MEMBER AT THE OTHER END OF THE SHAFT IS SLIDABLY BUT NON-ROTATIVELY SECURED TO SAID SHAFT.
Claim 2
Dependent Claim
134 words
AN AIR BEARING AND MOTOR ASSEMBLY COMPRISING A SHAFT HAVING AT EACH END A ROTATABLE MEMBER HAVING A PERIPHERAL SURFACE INCLUDING A SPHERICAL ZONE, AN ELECTRIC MOTOR ROTOR SECURED TO SAID SHAFT AT A POINT BETWEEN SAID ROTATABLE MEMBERS, A CASING, A STATOR SUPPORTED IN SAID CASING, AND CO-OPERATING WITH SAID ROTOR, A SOCKET MEMBER HAVING AN INTERNAL SPHERICAL SURFACE MATCHING THAT OF SAID ROTATABLE MEMBER ENCLOSING EACH ROTATABLE MEMBER, SAID SOCKET MEMBERS BEING RIGIDLY SUPPORTED IN SAID CASING AT A FIXED DISTANCE APART, AND MEANS FOR INTRODUCING AIR UNDER PRESSURE BETWEEN THE SPHERICAL SURFACES OF SAID ROTATABLE AND SOCKET MEMBERS, THE ROTATABLE MEMBER AT ONE END OF THE SHAFT BEING FIXED TO THE SHAFT, WHILE THE ROTATABLE MEMBER AT THE OTHER END OF THE SHAFT IS SLIDABLY BUT NON-ROTATIVELY SECURED TO SAID SHAFT.
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) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |