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US3735162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single-coil linear motors
Assignee: Individual
•
Filing: 1972-02-25
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Granted: 1973-05-22
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Expires: 1992-02-25
Abstract
Abstract One element comprises a long bar of copper or aluminum transversely pierced at regular intervals by iron cores. The second element- either element may move- comprises a solenoid with an iron core terminating in two long arms, parallel to each other and spaced a little wider than the aforementioned conductive bar, which is positioned by idler wheels between and in line with the arms of the solenoid''s core. When the solenoid is energized by AC, a repulsion current is induced in the conductive bar and it moves away from the coil, guided by the idler wheels.
Inventors
- 👤 M Alth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:03
CPC Classifications
H; H02; H02K; H02K41/00; H02K41/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
24 words
A device as claimed in claim 1 wherein said electrically conductive means comprises a solid bar of conductive metal generally rectangular in cross section.
Claim 2
Dependent Claim
22 words
A device as claimed in claim 1 wherein said electrically conductive means is transversely pierced by a plurality of magnetically permeable cores.
Claim 3
Dependent Claim
22 words
A device as claimed in claim 1, wherein said permeable magnetic core and associate arms comprise a solid bar of cast iron.
Claim 4
Dependent Claim
20 words
A device as claimed in claim 1, wherein said magnetically permeable core and associate arms comprise laminated magnetically permeable material.
Claim 5
Dependent Claim
19 words
A device as claimed in claim 1, wherein said parallel arms may be of a length other than long.
Claim 6
Dependent Claim
17 words
A device as claimed in claim 1, wherein said parallel arms may be straight and without offset.
Claim 7
Dependent Claim
24 words
A device as claimed in claim 1, wherein two and more single-phase linear motors may be grouped to produce lift and drive as desired.
Claim 8
Dependent Claim
20 words
A device as claimed in claim 1, wherein said conductive means is fixed and said solenoid is free to move.
Claim 9
Dependent Claim
20 words
A device as claimed in claim 1, wherein said solenoid is fixed and said conductive means is free to move.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |