US3090571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Winding apparatus
Assignee: Oerlikon Barmag AG
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Filing: 1956-04-17
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Granted: 1963-05-21
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Expires: 1976-04-17
Abstract
No abstract record available.
Inventors
- 👤 Lohest Hans
- 👤 Weber Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:54
CPC Classifications
B; B65; B65H; B65H59/00; B65H59/38; B65H59/384; B65H59/385; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A VARIABLE SPEED MOTOR COMPRISING MEANS FORMING A MAGNETIC FIELD SYSTEM INCLUDING CIRCUMFERENTIALLY SPACED FIELD POLES AND A COOPERATING MAGNETIC REFLUX BODY DEFINING AIR GAPS WITH SAID POLES, AN EDDY CURRENT ARMATURE HAVING A SLEEVE PORTION OF ELECTRICAL CONDUCTING MATERIAL DISPOSED IN SAID AIR GAPS IN POSITION EXPOSED TO MAGNETIC FIELDS EXTENDING BETWEEN SAID BODY AND SAID POLES, SAID ARMATURE AND FIELD SYSTEM BEING MOUNTED FOR RELATIVE TURNING MOVEMENT ABOUT A ROTARY AXIS, SAID SLEEVE PORTION OF SAID ARMATURE COMPRISING AN ELECTRICAL CONDUCTOR HAVING VARIANT CONDUCTIVITY IN THE AXIAL DIRECTION OF SAID SLEEVE, AND MEANS OPERABLE TO ADJUST THE RELATIVE AXIAL RELATIONSHIP OF SAID EDDY CURRENT ARMATURE WITH RESPECT TO THE REFLUX BODY IN ORDER TO VARY THE OPERATING SPEED OF SAID MOTOR.
Claim 2
Dependent Claim
123 words
A VARIABLE SPEED MOTOR COMPRISING MEANS FORMING A MAGNETIC FIELD SYSTEM INCLUDING CIRCUMFERENTIALLY SPACED FIELD POLES AND A COOPERATING MAGNETIC REFLUX BODY DEFINING AIR GAPS WITH SAID POLES, AN EDDY CURRENT ARMATURE HAVING A SLEEVE PORTION OF ELECTRICAL CONDUCTING MATERIAL DISPOSED IN SAID AIR GAPS IN POSITION EXPOSED TO MAGNETIC FIELDS EXTENDING BETWEEN SAID BODY AND SAID POLES, SAID ARMATURE AND FIELD SYSTEM BEING MOUNTED FOR RELATIVE TURNING MOVEMENT ABOUT A ROTARY AXIS, SAID SLEEVE PORTION OF SAID ARMATURE COMPRISING AN ELECTRICAL CONDUCTOR HAVING VARIANT CONDUCTIVITY IN THE AXIAL DIRECTION OF SAID SLEEVE, AND MEANS OPERABLE TO ADJUST THE RELATIVE AXIAL RELATIONSHIP OF SAID EDDY CURRENT ARMATURE WITH RESPECT TO THE REFLUX BODY IN ORDER TO VARY THE OPERATING SPEED OF SAID MOTOR.
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) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |