Patent US3731245A successfully refreshed from Google Patents.
US3731245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inductor bobbin with terminals
Assignee: Nortel Networks Ltd
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Filing: 1971-12-21
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Granted: 1973-05-01
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Expires: 1991-12-21
Abstract
Abstract Coil winding form in which the flange at one end of the body portion has an extension. In the arrangement described the extension extends away from the body portion, but in line with it. Slots in the end of the extension remote from the body portion receive terminals which are pushed in and gripped by the slot sides. Grooves are formed up the flange face and along the surface of the extension, the ends of the grooves adjacent to the terminal slots connected to these slots by transverse passages. In position the tab of each terminal can extend upward from the slot, clear of the surface of the extension for soldering of the wire lead from the coil. On pushing the tap down the wire is not stretched as it passed along the grooves, through the transverse passages to the slots adjacent the position for attachment to the tab. No stresses are caused in the wire, nor is it pushed against the turns of wire in the coil.
Inventors
- 👤 V Roslin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:07
CPC Classifications
H; H01; H01F; H01F5/00; H01F5/04; H01F2005/046
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
258 words
A coil winding form comprising a tabular body portion and a flange at one end of the body portion, an extension on said flange, said extension extending in a direction of, and parallel to the axis of said body portion and offset from said axis, said extension including an outer end remote from the body portion and an upper surface extending from the body portion to the said outer end; slots extending in an axial direction into the extension from said outer end parallel to said upper surface; grooves formed in said upper surface of said extension and extending axially from said body portion to said outer end alongside and parallel to said slots; and transverse passages extending between said grooves and said slots at said outer end of said extension; a terminal positioned in each of said slots and extending parallel to said axis of said body portion, each terminal having a tab thereon, the tab hingedly connected to the terminal, the connection between the tab and the terminal adjacent the outer end of the extension, each taB extending in a direction toward said body portion, the tabs adapted to extend beyond said upper surface from said slots and bendable to a retracted position within said extension below said upper surface; leads extending from a coil on said body portion to said tabs and soldered thereto through continuous enclosed paths defined by said slots, grooves and passages, said leads flexing at said transverse passages on bending of said tabs to the retracted position, without stressing the leads.
Claim 2
Dependent Claim
258 words
A coil winding form comprising a tabular body portion and a flange at one end of the body portion, an extension on said flange, said extension extending in a direction of, and parallel to the axis of said body portion and offset from said axis, said extension including an outer end remote from the body portion and an upper surface extending from the body portion to the said outer end; slots extending in an axial direction into the extension from said outer end parallel to said upper surface; grooves formed in said upper surface of said extension and extending axially from said body portion to said outer end alongside and parallel to said slots; and transverse passages extending between said grooves and said slots at said outer end of said extension; a terminal positioned in each of said slots and extending parallel to said axis of said body portion, each terminal having a tab thereon, the tab hingedly connected to the terminal, the connection between the tab and the terminal adjacent the outer end of the extension, each taB extending in a direction toward said body portion, the tabs adapted to extend beyond said upper surface from said slots and bendable to a retracted position within said extension below said upper surface; leads extending from a coil on said body portion to said tabs and soldered thereto through continuous enclosed paths defined by said slots, grooves and passages, said leads flexing at said transverse passages on bending of said tabs to the retracted position, without stressing the leads.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |