US4181908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deflection coil
Assignee: Denki Onkyo Co Ltd
•
Filing: 1978-02-23
•
Granted: 1980-01-01
•
Expires: 1998-02-23
Abstract
Abstract A coil frame comprises guides provided at the front and rear ends of a flared coil bobbin. Each guide has a plurality of circumferentially spaced winding insertion slots. The coil insertion slots in at least one of the guides are formed such that slot depth in the axial direction of a CRT is shallow in the vicinity of a window, with the depth of each slot becoming gradually deeper as the slots become more distant from the window. A deflection coil is formed by winding a deflection coil wire on the coil frame through the coil winding insertion slots of the guides such that a saddle-type deflection coil extends along the inside surface of the coil frame.
Inventors
- 👤 Norio Yoshikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:56
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/70; H01J29/72; H01J29/76; H01J29/762
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
146 words
A deflection coil having a coil frame and a wire wound thereon, said coil frame comprising a flared coil bobbin and guides provided on the front and rear ends of said coil bobbin integral therewith, wherein the guides at the front and rear ends of said coil bobbin each have a plurality of circumferentially spaced coil winding insertion slots, wherein said coil winding insertion slots in at least one of said guides are formed such that the slot depth in the axial direction of a CRT is shallow in the vicinity of a window formed in the guide, with the depth of each slot becoming successively deeper as the slots become more distant from said window, and wherein the wire of the deflection coil is wound through the coil insertion slots in said guide in a saddle-type configuration along the inside surface of the coil frame.
Claim 2
Dependent Claim
146 words
A deflection coil having a coil frame and a wire wound thereon, said coil frame comprising a flared coil bobbin and guides provided on the front and rear ends of said coil bobbin integral therewith, wherein the guides at the front and rear ends of said coil bobbin each have a plurality of circumferentially spaced coil winding insertion slots, wherein said coil winding insertion slots in at least one of said guides are formed such that the slot depth in the axial direction of a CRT is shallow in the vicinity of a window formed in the guide, with the depth of each slot becoming successively deeper as the slots become more distant from said window, and wherein the wire of the deflection coil is wound through the coil insertion slots in said guide in a saddle-type configuration along the inside surface of the coil frame.
Claim 3
Dependent Claim
22 words
A deflection coil as set forth in claim 1 wherein said at least one of said guides is both of said guides.
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) | 1982-12-31 | 1983-07-02 | 1984-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-31 | 1987-07-02 | 1988-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-31 | 1991-07-02 | 1992-01-01 | $7700.00 | Window Closed / Lapsed |