US3579003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic braking system
Assignee: Individual
•
Filing: 1969-07-31
•
Granted: 1971-05-18
•
Expires: 1989-07-31
Abstract
Abstract A magnetic braking system for braking the motion of a moving member including first magnet means mounted on the moving member, a support frame positioned proximate the moving member, second magnet means having a polarity opposite the polarity of the first magnet means secured to the support frame, and positioning means for moving the second magnet means on the support frame to a position proximate the first magnet means wherein the magnetic flux between the first and second magnet means brakes the motion of the moving member.
Inventors
- 👤 Robert C Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:50
CPC Classifications
H; H02; H02K; H02K49/00; H02K49/10; H02K49/104; H02K49/108
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
107 words
A magnetic braking system for braking the motion of a moving member comprising a support frame fixedly positioned with respect to said moving member; first magnet means attached to said moving member; second magnet means secured to said support frame having a polarity opposite the polarity of the first magnet means; and positioning means connected to said support frame and said second magnet means for moving the second magnet means to a position proximate the first magnet means attached to said moving member wherein the magnet flux between the first and second magnet means brakes the motion of said moving member with respect to said support frame.
Claim 2
Dependent Claim
107 words
A magnetic braking system for braking the motion of a moving member comprising a support frame fixedly positioned with respect to said moving member; first magnet means attached to said moving member; second magnet means secured to said support frame having a polarity opposite the polarity of the first magnet means; and positioning means connected to said support frame and said second magnet means for moving the second magnet means to a position proximate the first magnet means attached to said moving member wherein the magnet flux between the first and second magnet means brakes the motion of said moving member with respect to said support frame.
Claim 3
Dependent Claim
20 words
The magnetic braking system of claim 1 wherein said moving member is a rotor rotatably attached to said support frame.
Claim 4
Dependent Claim
49 words
The magnetic braking system of claim 2 wherein said first magnet means comprises a plurality of radially extending bar magnets positioned about the face of said rotor proximate said support frame such that the magnets have common poles positioned towards and away from the center axis of said rotor.
Claim 5
Dependent Claim
24 words
The magnetic braking system of claim 3 wherein said second magnet means comprises a plurality of magnets equal in number to the first magnets.
Claim 6
Dependent Claim
39 words
The magnetic braking system of claim 4 wherein the polarity of each of the second magnets is opposite to the polarity of the ends of the first bar magnets positioned furthest away from the center axis of said rotor.
Claim 7
Dependent Claim
107 words
A magnetic braking system for braking the motion of a moving member comprising a support frame fixedly positioned with respect to said moving member; first magnet means attached to said moving member; second magnet means secured to said support frame having a polarity opposite the polarity of the first magnet means; and positioning means connected to said moving member and said first magnet means for moving said first magnet means to a position proximate said second magnet means attached to said support frame wherein the magnet flux between the first and second magnet means brakes the motion of said moving member with respect to said support frame.
Claim 8
Dependent Claim
107 words
A magnetic braking system for braking the motion of a moving member comprising a support frame fixedly positioned with respect to said moving member; first magnet means attached to said moving member; second magnet means secured to said support frame having a polarity opposite the polarity of the first magnet means; and positioning means connected to said moving member and said first magnet means for moving said first magnet means to a position proximate said second magnet means attached to said support frame wherein the magnet flux between the first and second magnet means brakes the motion of said moving member with respect to said support frame.
Claim 9
Dependent Claim
20 words
The magnetic braking means of claim 6 wherein said moving member is a rotor rotatably attached to said support frame.
Claim 10
Dependent Claim
49 words
The magnetic braking means of claim 7 wherein said second magnet means comprises a plurality of radially extending bar magnets secured to the face of said support frame proximate said rotor such that the magnets have common poles positioned towards and away from the center axis of said rotor.
Claim 11
Dependent Claim
24 words
The magnetic braking means of claim 8 wherein said first magnet means comprises a plurality of magnets equal in number to the second magnets.
Claim 12
Dependent Claim
39 words
The magnetic braking system of claim 9 wherein the polarity of each of the first magnets is opposite to the polarity of the ends of tHe second bar magnets positioned furthest away from the center axis of said rotor.
References Cited (Backward Citations)
US1333415A
Cited
US2768316A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |