US3781738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for transferring movable coils of a variable induction device
Assignee: Magnetech Industries Inc
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Filing: 1972-01-20
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Granted: 1973-12-25
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Expires: 1992-01-20
Abstract
Abstract A method and apparatus for transferring the turns and windings of a movable coil between two drum portions, such as either from one drum to another or from one position on a drum to another postion thereon, in response to the rotation of the drum portions. The coil includes an intermediate portion extending between the drum portions and resilient guide means is provided to guide the coil as it is transferred and to allow the intermediate portion to vary slightly in length during the transfer of the coil so that the intermediate portion is not subject to excessive slack and stress. In addition, a drive means if provided to rotate the drum portions in synchronism when the drum portions comprise, for example, two independently mounted drums.
Inventors
- 👤 D Rozelle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:56
CPC Classifications
H; H01; H01F; H01F29/00; H01F29/08; H01F29/12
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
123 words
Apparatus comprising: first and second drum portions mounted for axial rotation about a magnetic core; electrically conductive coil means wound on both of said drum portions and adapted to be selectively transferred from one of said drum portions to the other in response to the rotation of said drum portions, said coil means including an intermediate portion extending between the drum portions along a substantially arcuate path; and, resilient means moveable longitudinally with respect to said drum portions in response to the rotation thereof and engaging said intermediate portion for applying a substantially constant pressure to said intermediate portion irrespective of slight variations in the length of said intermediate portion as said coil means is transferred from one drum portion to the other.
Claim 2
Dependent Claim
123 words
Apparatus comprising: first and second drum portions mounted for axial rotation about a magnetic core; electrically conductive coil means wound on both of said drum portions and adapted to be selectively transferred from one of said drum portions to the other in response to the rotation of said drum portions, said coil means including an intermediate portion extending between the drum portions along a substantially arcuate path; and, resilient means moveable longitudinally with respect to said drum portions in response to the rotation thereof and engaging said intermediate portion for applying a substantially constant pressure to said intermediate portion irrespective of slight variations in the length of said intermediate portion as said coil means is transferred from one drum portion to the other.
Claim 3
Dependent Claim
92 words
The apparatus of claim 1 wherein said resilient means comprises: a generally upright member having a threaded aperture therethrough, a threaded shaft passing through said threaded aperture in threaded engagement therewith; said upright member including means slidably engaging said intermediate portion of said coil means for guiding said coil means from a position along one of said drum portions to a position along the other of said drum portions; and, means carried by said upright member for resiliently biasing said intermediate portion of said coil means outwardly away from said drum portions.
Claim 4
Dependent Claim
32 words
The apparatus of claim 1 wherein said drum portions are independently mounted for axial rotation on opposite parallel legs of said magnetic core and including means for synchronously rotating said drum portions.
Claim 5
Dependent Claim
52 words
The apparatus of claim 3 wherein said rotating means comprises: drive means, including a threaded shaft disposed generally parallel to the axes of said drums, for rotating said drums in synchronism; said resilient means being mounted on said threaded shaft for movement along said threaded shaft in response to the rotation thereof.
Claim 6
Dependent Claim
128 words
The apparatus of claim 4 wherein said drive means includes: drive gear means connected to said threaded shaft at one end thereof; first and second gear means each connected to an associated one of said drum portions substantially coplanarly with said drive gear means, an endless belt having teeth disposed interiorly thereof, said belt being disposed in circumscribing relation with said drive gear means and said first and second gear means whereby said teeth engage all of said gear means; and an elongated guide rod spaced from and generally parallel to said threaded shaft, said resilient means slidably engaging said guide rod to prevent rotation of said guide means and said guide rod cooperating with said belt to prevent disengagement of said teeth from said drive gear means.
Claim 7
Dependent Claim
145 words
The apparatus of claim 3 wherein said rotating means comprises: first and second substantially identical gear means connected, respectively, to said first and second drum portions and disposed coaxially with respect thereto, said gear means being disposed at adjacent ends of said drum portions with said drum portions mounted on said opposite legs; driving gear means generally coplanar with said gear means and disposed generally equidistantly from said gear means; endless belt means having gear teeth disposed interiorly thereof and positioned in circumscribing reLation to said gear means and said driving gear means, said gear teeth positively engaging said gear means and said driving gear means; means for rotating said driving gear means to thereby rotate said drum portions in synchronism; and means cooperable with said driving gear means for preventing the disengagement of said teeth of said belt means from said driving gear means.
Claim 8
Dependent Claim
87 words
The apparatus of claim 1 wherein said resilient means comprises: guide means movable generally parallel to the axes of said drum portions in response to the rotation of said drum portions for guiding said coil means from a position along one of said drum portions to a desired position along the other of said drum portions; and means carried by said guide means for resiliently biasing a portion of said coil means intermediate said drum portions outwardly away from said drum portion along a substantially arcuate path.
Claim 9
Dependent Claim
156 words
In a variable induction device including a pair of spaced, axially rotatable drums having electrically conductive coil means wound on the drums and adapted to be transferred from one drum to the other responsively to the rotation of the drums, the improvement comprising: guide means movable generally parallel to the axes of said drums in response to the rotation of said drums for aligning said coil means on said drums during the transfer of said coil means from one drum to the other; and means carried by said guide means and engaging a portion of said coil means intermediate said drums for resiliently biasing said portion of said coil means outwardly away from said drums along a substantially arcuate path between the drums, said biasing means permitting said intermediate portion to vary in length while maintaining a substantially even stress on said intermediate portion whereby excessive stress and excessive slackening of said intermediate portion is prevented.
Claim 10
Dependent Claim
156 words
In a variable induction device including a pair of spaced, axially rotatable drums having electrically conductive coil means wound on the drums and adapted to be transferred from one drum to the other responsively to the rotation of the drums, the improvement comprising: guide means movable generally parallel to the axes of said drums in response to the rotation of said drums for aligning said coil means on said drums during the transfer of said coil means from one drum to the other; and means carried by said guide means and engaging a portion of said coil means intermediate said drums for resiliently biasing said portion of said coil means outwardly away from said drums along a substantially arcuate path between the drums, said biasing means permitting said intermediate portion to vary in length while maintaining a substantially even stress on said intermediate portion whereby excessive stress and excessive slackening of said intermediate portion is prevented.
Claim 11
Dependent Claim
51 words
The variable induction device of claim 8 comprising: drive means, including a threaded shaft disposed generally parallel to the axes of said drums, for rotating said drums in synchronism; and, said guide means being mounted on said threaded shaft for movement along said threaded shaft in response to the rotation thereof.
Claim 12
Dependent Claim
40 words
The variable induction device of claim 9 including: an elongated guide rod spaced from and generally parallel to said threaded shaft, said guide rod being slidably engaged by said guide means so that said guide means is secured against rotation.
Claim 13
Dependent Claim
129 words
The variable induction device of claim 9 wherein said drive means includes: drive gear means connected to said threaded shaft at one end thereof; first and second gear means each connected to an associated one of said drums substantially coplanarly with said drive gear means; an endless belt having teeth disposed interiorly thereof, said belt being disposed in circumscribing relation with said drive gear means and said first and second gear means whereby said teeth engage all of said gear means; and an elongated guide rod spaced from and generally parallel to said threaded shaft, said guide means slidably engaging said guide rod to prevent rotation of said guide means and said guide rod cooperating with said belt to prevent disengagement of said teeth from said drive gear means.
Claim 14
Dependent Claim
82 words
The variable induction device of claim 9 wherein said guide means comprises: a generally upright member having a threaded aperture therethrough, said threaded shaft passing through said threaded aperture in threaded engagement therewith; said upright member including means slidably engaging said portion of said coil means intermediate said drums for guiding said coil means from a position along one of said drums to a position along the other of said drums; said means for resiliently biasing being carried by said upright member.
Claim 15
Independent Claim
180 words
A method for transferring electrically conductive coil means from one drum portion to another drum portion in a variabLe induction device including two drum portions mounted for axial rotation about a magnetic core and electrically conductive coil means transferable between said drum portions in response to the rotation thereof, the method comprising the steps of: slidably engaging a portion of the coil means intermediate the drum portions with a guide means disposed intermediate the drum portions; rotating the drum portions in synchronism; moving the guide means generally parallel to the axes of the drum portions in response to the rotation of the drum portions to thereby guide the coil means from a position along one of the drum portions to a position along the other of the drum portions; and resiliently biasing the slidably engaged portion of the coil means intermediate the drum portions outwardly away from the drum portions and along a substantially arcuate path between the drum portions to thereby permit the intermediate portion to vary in length while maintaining a substantially even stress on the intermediate portion.
Claim 16
Independent Claim
180 words
A method for transferring electrically conductive coil means from one drum portion to another drum portion in a variabLe induction device including two drum portions mounted for axial rotation about a magnetic core and electrically conductive coil means transferable between said drum portions in response to the rotation thereof, the method comprising the steps of: slidably engaging a portion of the coil means intermediate the drum portions with a guide means disposed intermediate the drum portions; rotating the drum portions in synchronism; moving the guide means generally parallel to the axes of the drum portions in response to the rotation of the drum portions to thereby guide the coil means from a position along one of the drum portions to a position along the other of the drum portions; and resiliently biasing the slidably engaged portion of the coil means intermediate the drum portions outwardly away from the drum portions and along a substantially arcuate path between the drum portions to thereby permit the intermediate portion to vary in length while maintaining a substantially even stress on the intermediate portion.
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) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |