US3262524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
One way electric transmission brake
Assignee: Paramatic Development Ltd
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Filing: 1963-12-04
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Granted: 1966-07-26
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Expires: 1983-12-04
Abstract
No abstract record available.
Inventors
- 👤 Haslehurst Arthur Kinder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:53
CPC Classifications
B; B23; B23Q; B23Q11/00; B23Q11/0078; B23Q11/0092; F; F16; F16D; F16D2121/00; F16D2121/18; F16D2121/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
AN ELECTROMAGNETIC BRAKE COMPRISING A RELATIVELY SLOWLY ROTATABLE DRIVING MEMBER FOR TURNING IN EITHER OF OPPOSITE DIRECTIONS, A HIGH RATIO GEAR TRAIN CONNECTED TO THE DRIVING MEMBER, A ROTOR DRIVEN AT A RELATIVELY HIGH SPEED BY THE GEAR TRAIN AND MOVABLE FOR A SHORT DISTANCE ALONG ON ITS OWN AXIS, A STATIONARY ELECTROMAGNET ADJACENT SAID ROTOR FOR ATTRACTING AND STOPPING SAID ROTOR, AND DIRECTION SENSING MEANS ASSOCIATED WITH SAID ROTATABLE DRIVING MEMBER OPERABLE TO ENERGIZE SAID ELECTROMAGNET UPON CESSATION OF ROTATION OF THE DRIVING MEMBER IN ONE DIRECTION AND IMMEDIATELY UPON START OF ROTATION IN THE OPPOSITE DIRECTION, WHEREBY SAID GEAR TRAIN IS IN DRIVING ENGAGEMENT TO EFFECT AN IMMEDIATE AND MAGNIFIED BRAKING EFFECT ON THE DRIVING MEMBER THROUGH FRICTION OF THE GEAR TRAIN WITHOUT BACK LASH.
Claim 2
Dependent Claim
127 words
AN ELECTROMAGNETIC BRAKE COMPRISING A RELATIVELY SLOWLY ROTATABLE DRIVING MEMBER FOR TURNING IN EITHER OF OPPOSITE DIRECTIONS, A HIGH RATIO GEAR TRAIN CONNECTED TO THE DRIVING MEMBER, A ROTOR DRIVEN AT A RELATIVELY HIGH SPEED BY THE GEAR TRAIN AND MOVABLE FOR A SHORT DISTANCE ALONG ON ITS OWN AXIS, A STATIONARY ELECTROMAGNET ADJACENT SAID ROTOR FOR ATTRACTING AND STOPPING SAID ROTOR, AND DIRECTION SENSING MEANS ASSOCIATED WITH SAID ROTATABLE DRIVING MEMBER OPERABLE TO ENERGIZE SAID ELECTROMAGNET UPON CESSATION OF ROTATION OF THE DRIVING MEMBER IN ONE DIRECTION AND IMMEDIATELY UPON START OF ROTATION IN THE OPPOSITE DIRECTION, WHEREBY SAID GEAR TRAIN IS IN DRIVING ENGAGEMENT TO EFFECT AN IMMEDIATE AND MAGNIFIED BRAKING EFFECT ON THE DRIVING MEMBER THROUGH FRICTION OF THE GEAR TRAIN WITHOUT BACK LASH.
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) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |