US5032816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Longitudinally contoured conductor for inductive electrical devices
Assignee: PacSci Motion Control Inc
•
Filing: 1989-11-02
•
Granted: 1991-07-16
•
Expires: 2009-11-02
Abstract
Abstract An improved conductor for an inductor device of the type having varying current carrying requirements along the length of the conductor, the improvement comprising having the conductor contoured such that the cross sectional area of the conductor varies substantially directly as the current carrying requirements of the conductor vary. In one embodiment, a coil for a variable transformer is cut from a cylinder of conductor material by numerically controlled machining, producing a contoured conductor and eliminating the requirement for coiling or winding of the conductor.
Inventors
- 👤 Richard S. Lenzing
- 👤 Julian A. Watt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:40
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/28; H01F27/2823
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
102 words
A conductor for carrying current in a transformer of the type having varying current carrying requirements along the length of the conductor, comprising: (a) the conductor having a rectangular cross section of uniform thickness; (b) the cross sectional area of at least a portion of the conductor varies continuously and that cross sectional area of that portion of the conductor varies substantially directly as the current carrying requirements of the conductor vary in that portion; (c) a contact brush guide groove of constant width machined in the conductor; and (d) a contact brush disposed for movement along the contact brush guide groove.
Claim 2
Dependent Claim
102 words
A conductor for carrying current in a transformer of the type having varying current carrying requirements along the length of the conductor, comprising: (a) the conductor having a rectangular cross section of uniform thickness; (b) the cross sectional area of at least a portion of the conductor varies continuously and that cross sectional area of that portion of the conductor varies substantially directly as the current carrying requirements of the conductor vary in that portion; (c) a contact brush guide groove of constant width machined in the conductor; and (d) a contact brush disposed for movement along the contact brush guide groove.
Claim 3
Dependent Claim
24 words
Claim 1, further comprising a contact brush guide with the contact brush mounted thereon, disposed for contacting movement with the contact brush guide groove.
Claim 4
Dependent Claim
135 words
A conductor for carrying current in a transformer of the type having varying current carrying requirements along the length of the conductor, comprising: (a) the conductor having a rectangular cross section and a uniform thickness; (b) the conductor having at least first and second lengths, the first and second lengths having different cross-sectional areas substantially proportional to the amount of current required to be carried by each; (c) a transitional length of conductor connecting the first and second lengths and having a continuously varying cross sectional area, the varying cross sectional area being substantially proportional to the varying amount of current to be carried by the transitional length of conductor; (d) a contact brush guide groove of constant width machined therein; and (e) a contact brush disposed for movement along the contact brush guide groove.
Claim 5
Dependent Claim
135 words
A conductor for carrying current in a transformer of the type having varying current carrying requirements along the length of the conductor, comprising: (a) the conductor having a rectangular cross section and a uniform thickness; (b) the conductor having at least first and second lengths, the first and second lengths having different cross-sectional areas substantially proportional to the amount of current required to be carried by each; (c) a transitional length of conductor connecting the first and second lengths and having a continuously varying cross sectional area, the varying cross sectional area being substantially proportional to the varying amount of current to be carried by the transitional length of conductor; (d) a contact brush guide groove of constant width machined therein; and (e) a contact brush disposed for movement along the contact brush guide groove.
Claim 6
Dependent Claim
24 words
Claim 3, further comprising a contact brush guide with the contact brush mounted thereon, disposed for contacting movement with the contact brush guide groove.
References Cited (Backward Citations)
US2735075A
Cited
BE521287A
Cited
US2735979A
Cited
US2735072A
Cited
US719005A
Cited
US854774A
Cited
US1000440A
Cited
US1738528A
Cited
FR811392A
Cited
US2395062A
Cited
US2496034A
Cited
US2604519A
Cited
GB718748A
Cited
US2873373A
Cited
US3140458A
Cited
US2963669A
Cited
DE1240932B
Cited
US3480897A
Cited
US3731243A
Cited
US4429206A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-07-15 | 1995-01-14 | 1995-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-15 | 1999-01-14 | 1999-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-15 | 2003-01-14 | 2003-07-16 | $7700.00 | Window Closed / Lapsed |