US4579405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
AC power cord
Assignee: Sharp Corp
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Filing: 1984-06-12
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Granted: 1986-04-01
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Expires: 2004-06-12
Abstract
Abstract An AC power cord assembled in the plastic-molded bushing unit that has a groove engaged with the edge of an open space which is formed through the wall of the installation base and contains a plurality of electric lines of the AC power cord including the earth line. The bushing unit also provides an earth terminal which is connected to the earth line and integrally formed in and held by the bushing unit. As a result, by externally securing the main unit with a screw, assembly work can be easily and conveniently performed, thus significantly reducing the cost.
Inventors
- 👤 Mitsuo Hirooka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:53
CPC Classifications
H; H01; H01R; H01R9/00; H01R9/22; H01R9/24; H01R9/2491; H01R13/00; H01R13/648; H01R13/73; H01R13/74; H01R2103/00; H01R24/00; H01R24/28; H01R24/30; H01R4/00; H01R4/58; H01R4/64
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
150 words
A system for simultaneously securing an AC power cord including an earth line to an electrical device, comprising: a main housing receiving said electrical device and including a panel, said panel having an opening formed therein for receiving said power cord therethrough; an insulated bushing formed on said AC power cord, said bushing having a base juxtaposed with said panel and extending into said opening, said base including a notch which engages an edge of said opening and positions said bushing on said panel; an earth terminal, connected to said earth line of said AC power cord, to provide a ground to said electrical device; and means for securing said earth terminal to said panel to electrically connect said earth terminal to said device through said panel; said means for securing and the engagement of said notch with the edge of said opening collectively secure said bushing to said panel.
Claim 2
Independent Claim
150 words
A system for simultaneously securing an AC power cord including an earth line to an electrical device, comprising: a main housing receiving said electrical device and including a panel, said panel having an opening formed therein for receiving said power cord therethrough; an insulated bushing formed on said AC power cord, said bushing having a base juxtaposed with said panel and extending into said opening, said base including a notch which engages an edge of said opening and positions said bushing on said panel; an earth terminal, connected to said earth line of said AC power cord, to provide a ground to said electrical device; and means for securing said earth terminal to said panel to electrically connect said earth terminal to said device through said panel; said means for securing and the engagement of said notch with the edge of said opening collectively secure said bushing to said panel.
Claim 3
Dependent Claim
16 words
The system according to claim 1, wherein said earth terminal is integrally formed within said bushing.
Claim 4
Dependent Claim
15 words
The system according to claim 1, wherein said bushing is an insulated plastic molded unit.
Claim 5
Dependent Claim
31 words
The system according to claim 1, wherein said means for securing said earth terminal is a screw and washer assembly inserted through said bushing and said earth terminal to said panel.
Claim 6
Dependent Claim
31 words
The system according to claim 4, wherein said means for securing said earth terminal further includes a conductive cylindrical support positioned between said panel and said earth terminal within said bushing.
Claim 7
Dependent Claim
22 words
The apparatus according to claim 1, wherein said AC power cord is secured by and extends through a portion of said bushing.
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) | 1989-03-31 | 1989-09-30 | 1990-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-31 | 1993-09-30 | 1994-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-31 | 1997-09-30 | 1998-04-01 | $7700.00 | Window Closed / Lapsed |