US3270265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic friction braking arrangement
Assignee: TDK Micronas GmbH
•
Filing: 1963-06-03
•
Granted: 1966-08-30
•
Expires: 1983-06-03
Abstract
No abstract record available.
Inventors
- 👤 John F Mcnulty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:04
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/10; H02K7/102; H02K7/1021; H02K7/1023; H02K7/1025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
A MAGNETIC BRAKE FOR A MOTOR DRIVEN ROTATABLE ELEMENT INCLUDING A FIXED CORE STRUCTURE HAVING A PAIR OF OPPOSITELY POLED WINDINGS THEREON FOR GENERATING A MAGNETIC FLUX IN SAID CORE STRUCTURE; A MOTOR FOR ROTATING SAID MOTOR DRIVEN ELEMENT; A BRAKE MEMBER ON SAID DRIVEN ELEMENT INCLUDING BIASING MEANS NORMALLY MAINTAINING SAID BRAKE MEMBER OUT OF LOCKING ENGAGEMENT WITH SAID CORE STRUCTURE, SAID BRAKE MEMBER BEING POSITIONED IN FLUX-LINKING RELATIONSHIP WITH SAID CORE STRUCTURE AND MOVABLE INTO LOCKING ENGAGEMENT THEREWITH RESPONSIVE TO THE SAID GENERATION OF MAGNETIC FLUX TO LOCK SAID DRIVEN MEMBER IN ANY ROTATED POSITION; SELECTIVELY OPERABLE MEANS FOR ENERGIZING ONE OF SAID WINDINGS TO MOVE SAID BRAKE MEMBER INTO LOCKING ENGAGEMENT WITH SAID CORE STRUCTURE, FOR CONCURRENTLY ENERGIZING SAID MOTOR AND BOTH OF SAID WINDINGS FOR RELEASING SAID BRAKE MEMBER FROM LOCKING ENGAGEMENT WITH SAID CORE STRUCTURE, AND FOR ENERGIZING SAID MOTOR TO DRIVE SAID UNLOCKED DRIVEN MEMBER; AND SAID BIASING MEANS ON SAID BRAKE MEMBER RESPONSIVE TO DE-ENERGIZATION OF BOTH OF SAID WINDINGS MOVING SAID BRAKE MEMBER OUT OF LOCKING ENGAGEMENT WITH SAID CORE STRUCTURE.
Claim 2
Dependent Claim
179 words
A MAGNETIC BRAKE FOR A MOTOR DRIVEN ROTATABLE ELEMENT INCLUDING A FIXED CORE STRUCTURE HAVING A PAIR OF OPPOSITELY POLED WINDINGS THEREON FOR GENERATING A MAGNETIC FLUX IN SAID CORE STRUCTURE; A MOTOR FOR ROTATING SAID MOTOR DRIVEN ELEMENT; A BRAKE MEMBER ON SAID DRIVEN ELEMENT INCLUDING BIASING MEANS NORMALLY MAINTAINING SAID BRAKE MEMBER OUT OF LOCKING ENGAGEMENT WITH SAID CORE STRUCTURE, SAID BRAKE MEMBER BEING POSITIONED IN FLUX-LINKING RELATIONSHIP WITH SAID CORE STRUCTURE AND MOVABLE INTO LOCKING ENGAGEMENT THEREWITH RESPONSIVE TO THE SAID GENERATION OF MAGNETIC FLUX TO LOCK SAID DRIVEN MEMBER IN ANY ROTATED POSITION; SELECTIVELY OPERABLE MEANS FOR ENERGIZING ONE OF SAID WINDINGS TO MOVE SAID BRAKE MEMBER INTO LOCKING ENGAGEMENT WITH SAID CORE STRUCTURE, FOR CONCURRENTLY ENERGIZING SAID MOTOR AND BOTH OF SAID WINDINGS FOR RELEASING SAID BRAKE MEMBER FROM LOCKING ENGAGEMENT WITH SAID CORE STRUCTURE, AND FOR ENERGIZING SAID MOTOR TO DRIVE SAID UNLOCKED DRIVEN MEMBER; AND SAID BIASING MEANS ON SAID BRAKE MEMBER RESPONSIVE TO DE-ENERGIZATION OF BOTH OF SAID WINDINGS MOVING SAID BRAKE MEMBER OUT OF LOCKING ENGAGEMENT WITH SAID CORE STRUCTURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |