US4174874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric plug
Assignee: Individual
•
Filing: 1978-03-15
•
Granted: 1979-11-20
•
Expires: 1998-03-15
Abstract
Abstract An electric plug that has a retractable ground terminal in addition to the customary two terminals. Novel means is used for electrically connecting the three wires to the three terminals without the need of screws functioning as binding posts between the wires and the terminals.
Inventors
- 👤 Hop Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:39
CPC Classifications
H; H01; H01R; H01R27/00; H01R13/00; H01R13/648; H01R13/652; H01R2103/00; H01R24/00; H01R24/28; H01R24/30; H01R4/00; H01R4/28; H01R4/38
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
216 words
In an electric plug: (a) a terminal carrier for supporting a pivoted "ground" terminal and two electrodes; (b) a cable receiving sleeve with the "ground" wire and two other wires extending beyond the cable casing and being received in three radially extending grooves in said carrier so that when the sleeve abuts the terminal carrier, the three wires will be gripped in the radial grooves; (c) said terminal carrier having three projections with a bore extending through each one, each bore communicating with one of the radial grooves and receiving the bare wire strands of the wire in that groove, the wire strands of each wire extending over the outer end of its particular projection with the ends of the strands being received in recesses in the terminal carrier, said "ground" terminal and said two electrodes having portions in electrical contact with their associate bare wire strands that extend over the outer ends of the projections; (d) an end cap for receiving said terminal carrier and having openings through which the "ground" terminal and two electrodes can extend; and (e) a coupling connector for receiving said sleeve and being connectible to said end cap for enclosing said terminal carrier and holding said "ground" terminal and two electrodes in electrical connection with their respective bare wire strands.
Claim 2
Dependent Claim
216 words
In an electric plug: (a) a terminal carrier for supporting a pivoted "ground" terminal and two electrodes; (b) a cable receiving sleeve with the "ground" wire and two other wires extending beyond the cable casing and being received in three radially extending grooves in said carrier so that when the sleeve abuts the terminal carrier, the three wires will be gripped in the radial grooves; (c) said terminal carrier having three projections with a bore extending through each one, each bore communicating with one of the radial grooves and receiving the bare wire strands of the wire in that groove, the wire strands of each wire extending over the outer end of its particular projection with the ends of the strands being received in recesses in the terminal carrier, said "ground" terminal and said two electrodes having portions in electrical contact with their associate bare wire strands that extend over the outer ends of the projections; (d) an end cap for receiving said terminal carrier and having openings through which the "ground" terminal and two electrodes can extend; and (e) a coupling connector for receiving said sleeve and being connectible to said end cap for enclosing said terminal carrier and holding said "ground" terminal and two electrodes in electrical connection with their respective bare wire strands.
Claim 3
Dependent Claim
40 words
The combination as set forth in claim 1: and in which (a) said terminal carrier has an axial handle projecting beyond the adjacent end of said terminal carrier and having three longitudinally extending grooves for receiving the three cable wires.
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) | 1982-11-19 | 1983-05-21 | 1983-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-19 | 1987-05-21 | 1987-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-19 | 1991-05-21 | 1991-11-20 | $7700.00 | Window Closed / Lapsed |