US3947958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical fitting preparation
Assignee: Precision Paper Tube Co
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Filing: 1974-10-11
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Granted: 1976-04-06
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Expires: 1994-10-11
Abstract
Abstract A method of preparing an electrical fitting wherein a knurled wire is inserted into a molded plastic part to provide reliable anchoring of the wire as a lead for a coil form or the like.
Inventors
- 👤 William A. Bowers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:04
CPC Classifications
H; H01; H01R; H01R43/00; H01R43/20; Y; Y10; Y10S; Y10S29/00; Y10S29/023; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/51; Y10T29/5136; Y10T29/5137; Y10T29/5138; Y10T29/5142; Y10T29/53; Y10T29/5313; Y10T29/532; Y10T29/53209; Y10T83/00; Y10T83/444; Y10T83/463; Y10T83/4632; Y10T83/748; Y10T83/7487; Y10T83/7573
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
118 words
In a method of making an electrical fitting, the steps of positioning a unitary molded plastic form at one end of a path, said form having at least one elongated hole therein extending in the direction of said path, sequentially knurling longitudinally spaced portions of a continuous wire in said path and intermittently gripping the knurled portion thereof and thereafter advancing said wire in said path into said hole to position a previously knurled portion in said hole, the wire diameter prior to knurling approximating the diameter of said hole whereby said knurled portion is adapted to anchor said wire in said hole, and severing said wire a spaced distance from said hole to provide an electrical lead.
Claim 2
Dependent Claim
118 words
In a method of making an electrical fitting, the steps of positioning a unitary molded plastic form at one end of a path, said form having at least one elongated hole therein extending in the direction of said path, sequentially knurling longitudinally spaced portions of a continuous wire in said path and intermittently gripping the knurled portion thereof and thereafter advancing said wire in said path into said hole to position a previously knurled portion in said hole, the wire diameter prior to knurling approximating the diameter of said hole whereby said knurled portion is adapted to anchor said wire in said hole, and severing said wire a spaced distance from said hole to provide an electrical lead.
Claim 3
Dependent Claim
47 words
The product made according to the method of claim 1 in which said knurled portion includes indentations in said wire at at least about 0.005 inch (0.0125 millimeters) whereby said wire is sufficiently anchored in said form to withstand a withdrawal force of three pounds (1.35 kg.).
References Cited (Backward Citations)
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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) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |