Patent US3609431A successfully refreshed from Google Patents.
US3609431A
Expired / Lapsed
US
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Hollow printed circuit armature
Assignee: Unisys Corp
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Filing: 1969-07-25
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Granted: 1971-09-28
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Expires: 1989-07-25
Abstract
Abstract A printed circuit armature wherein the conductors are printed on one face of an insulated support member, and which member is adapted to be folded into opposing leaf portions and then rolled into a cylinder whereby the conductors are arranged on the inner and outer surfaces of the cylinder.
Inventors
- 👤 Joshua Lifschitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:49
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/04; H02K3/26; H02K13/00; H02K13/04; H02K13/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
205 words
A hollow cylindrical armature comprising, a. at least a pair of insulated sheets with the surface of one sheet of said pair constituting the outer surface of the armature and the other sheet of said pair constituting the inner surface of said cylindrical armature, b. said insulating sheets having a curved, unbroken unitary cross section in longitudinal cross section at the peripheral edge of one end of said cylindrical armature and the insulated sheets at the peripheral edge of the other end of said armature having discrete ends, c. a plurality of spaced electrical conductors each having two legs provided on said insulated sheets, with one leg extending along the outer surface of said armature and the other leg extending along the inner surface of the armature, d. each of said electrical conductors having discrete ends disposed adjacent the peripheral edge of said other end of the armature and having the legs joined in a continuous U-shaped configuration extending over and around the peripheral edge of said one end of the armature, e. means on one of said insulated sheets for aligning the respective legs of the individual conductors, and f. said aligning means including means for connecting said aligned legs of the respective conductors.
Claim 2
Dependent Claim
205 words
A hollow cylindrical armature comprising, a. at least a pair of insulated sheets with the surface of one sheet of said pair constituting the outer surface of the armature and the other sheet of said pair constituting the inner surface of said cylindrical armature, b. said insulating sheets having a curved, unbroken unitary cross section in longitudinal cross section at the peripheral edge of one end of said cylindrical armature and the insulated sheets at the peripheral edge of the other end of said armature having discrete ends, c. a plurality of spaced electrical conductors each having two legs provided on said insulated sheets, with one leg extending along the outer surface of said armature and the other leg extending along the inner surface of the armature, d. each of said electrical conductors having discrete ends disposed adjacent the peripheral edge of said other end of the armature and having the legs joined in a continuous U-shaped configuration extending over and around the peripheral edge of said one end of the armature, e. means on one of said insulated sheets for aligning the respective legs of the individual conductors, and f. said aligning means including means for connecting said aligned legs of the respective conductors.
Claim 3
Dependent Claim
26 words
The armature of claim 1 wherein the discrete ends of said insulated sheets at the said other end of the armature are flush with each other.
Claim 4
Dependent Claim
34 words
The armature of claim 2 wherein the end of one leg of the conductor extends over the flush discrete ends of the sheets and engages the end of the other leg of the conductor.
Claim 5
Dependent Claim
29 words
The armature of claim 3 wherein the engaged ends of said one legs are all disposed on said one sheet and are of reduced dimensions to form tab extensions.
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |