← Back to Patent Explorer
US4705342A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrical extension outlet

Assignee: Cable Electric Products Inc
•
Filing: 1985-11-12
•
Granted: 1987-11-10
•
Expires: 2005-11-12
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract The invention features an electrical extension outlet that is easily assembled and which provides internal isolation to wiring and socket contacts. The components of the outlet are assembled by means of snap fasteners. A double housing and base member construction doubly shields wiring and contacts. Care is taken in the internal design to isolate all metal fasteners from wiring and contacts.

Inventors

  • 👤 Frederic W. Schwartz

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 18:50
CPC Classifications
H; H01; H01R; H01R25/00; H01R25/003; H01R13/00; H01R13/46; H01R13/502; H01R13/506; H01R13/66; H01R13/70; H01R13/713; H01R4/00; H01R4/02

Claims Analysis

Total Claims: 17
Claim 1
Independent Claim 274 words
An easily assembled electrical extension outlet having a multiplicity of electrical sockets disposed in seriatim about an elongated base member, said extension outlet comprising: a housing having a substantially rectangular shape and means defining front and rear apertures and blind fastener receptacles; a rear plate for covering the rear aperture of said housing, said rear plate being affixable to said housing by means of fasteners which extend into said blind fastener receptacles; a base member having means for snap fastening said base member into said front aperture of said housing, said base member having a flange extension that extends over said front aperture, said base member having a top surface containing a multiplicity of socket holes defining a number of individual sockets, said base member containing in isolation wiring and contact means for establishing isolated electrical connection to each individual socket; a switch disposed in said top surface of said base member and electrically connected to each individual socket, said switch having means for snap fastening said switch into said base member; a power cord entering into said housing; and a circuit breaker disposed within said housing and electrically connected between said power cord and said switch, said rear plate having means defining rear plate apertures for receiving wall mounting fasteners, said rear plate having means for electrically isolating said rear plate apertures, whereby said wall mounting fasteners do not come into contact with internal wiring, said means for isolating said rear plate apertures comprising cylindrical wells integrally formed in said rear plate, each well surrounding a respective rear plate aperture, and wherein said base member has internal flanges for covering each cylindrical well.
Claim 2
Dependent Claim 274 words
An easily assembled electrical extension outlet having a multiplicity of electrical sockets disposed in seriatim about an elongated base member, said extension outlet comprising: a housing having a substantially rectangular shape and means defining front and rear apertures and blind fastener receptacles; a rear plate for covering the rear aperture of said housing, said rear plate being affixable to said housing by means of fasteners which extend into said blind fastener receptacles; a base member having means for snap fastening said base member into said front aperture of said housing, said base member having a flange extension that extends over said front aperture, said base member having a top surface containing a multiplicity of socket holes defining a number of individual sockets, said base member containing in isolation wiring and contact means for establishing isolated electrical connection to each individual socket; a switch disposed in said top surface of said base member and electrically connected to each individual socket, said switch having means for snap fastening said switch into said base member; a power cord entering into said housing; and a circuit breaker disposed within said housing and electrically connected between said power cord and said switch, said rear plate having means defining rear plate apertures for receiving wall mounting fasteners, said rear plate having means for electrically isolating said rear plate apertures, whereby said wall mounting fasteners do not come into contact with internal wiring, said means for isolating said rear plate apertures comprising cylindrical wells integrally formed in said rear plate, each well surrounding a respective rear plate aperture, and wherein said base member has internal flanges for covering each cylindrical well.
Claim 3
Dependent Claim 22 words
The electrical extension outlet of claim 1, wherein said switch comprises an illuminating rocker that indicates when said sockets are electrically powered.
Claim 4
Dependent Claim 25 words
The electrical extension outlet of claim 1, wherein said power cord is affixed to a sidewall of said housing by means a strain relief grip.
Claim 5
Dependent Claim 16 words
The electrical extension outlet of claim 1, wherein said rear plate comprises an impact-resistant skeletal molding.
Claim 6
Dependent Claim 47 words
The electrical extension outlet of claim 1, wherein said rear plate has means defining rear plate apertures for receiving wall mounting fasteners, said rear plate having means for electrically isolating said rear plate apertures, whereby said wall mounting fasteners do not come into contact with internal wiring.
Claim 7
Dependent Claim 33 words
The electrical extension outlet of claim 5, wherein said means for isolating said rear plate apertures comprises cylindrical wells integrally formed in said rear plate, each well surrounding a respective rear plate aperture.
Claim 8
Dependent Claim 30 words
The electrical extension outlet of claim 1, wherein said circuit breaker is encased in a separate casement within said housing to electrically isolate said circuit breaker within said extension outlet.
Claim 9
Dependent Claim 55 words
The electrical extension outlet of claim 7, wherein said circuit breaker is affixed to said housing along a sidewall thereof by means of a screw cap that tightens about a screw threaded post disposed on said circuit breaker casement, said screw threaded post extending through a hole in said sidewall for receiving said screw cap.
Claim 10
Dependent Claim 15 words
The electrical extension outlet of claim 1, wherein said housing comprises an impact-resistant skeletal molding.
Claim 11
Dependent Claim 20 words
The electrical extension outlet of claim 9, wherein said housing is flexible to accommodate snap-action assembly of said base member.
Claim 12
Dependent Claim 174 words
An electrical extension outlet having a multiplicity of electrical sockets disposed in seriatim about an elongated base member, said sockets having contacts which are wired together in common ground and are doubly electrically isolated by means of being disposed within a base member which is itself encased in a housing; said base member being easily assembled to said housing by means of irreversible snap fasteners integrally molded about said base member, said extension outlet further comprising a rear plate affixed to said housing, wherein said housing comprises blind fastener receptacles for receiving fasteners for affixing said rear plate to said housing, wherein said rear plate having holes for mounting said outlet to a wall by means of fasteners, wherein said rear plate comprising isolation wells, each surrounding a mounting hole, whereby a metal fastener is prevented from contact with internal wiring in said housing, and wherein said base member has flanges that fit over said isolation wells of said rear plate, whereby said isolation wells are sealed from said internal wiring of said housing.
Claim 13
Dependent Claim 174 words
An electrical extension outlet having a multiplicity of electrical sockets disposed in seriatim about an elongated base member, said sockets having contacts which are wired together in common ground and are doubly electrically isolated by means of being disposed within a base member which is itself encased in a housing; said base member being easily assembled to said housing by means of irreversible snap fasteners integrally molded about said base member, said extension outlet further comprising a rear plate affixed to said housing, wherein said housing comprises blind fastener receptacles for receiving fasteners for affixing said rear plate to said housing, wherein said rear plate having holes for mounting said outlet to a wall by means of fasteners, wherein said rear plate comprising isolation wells, each surrounding a mounting hole, whereby a metal fastener is prevented from contact with internal wiring in said housing, and wherein said base member has flanges that fit over said isolation wells of said rear plate, whereby said isolation wells are sealed from said internal wiring of said housing.
Claim 14
Dependent Claim 16 words
The electrical extension outlet of claim 11, further comprising a rear plate affixed to said housing.
Claim 15
Dependent Claim 25 words
The electrical extension outlet of claim 12, wherein said housing comprises blind fastener receptacles for receiving fasteners for affixing said rear plate to said housing.
Claim 16
Dependent Claim 24 words
The electrical extension outlet of claim 12, wherein said rear plate has holes for mounting said outlet to a wall by means of fasteners.
Claim 17
Dependent Claim 33 words
The electrical extension outlet of claim 14, wherein said rear plate comprises isolation wells, each surrounding a mounting hole, whereby a metal fastener is prevented from contact with internal wiring in said housing.

References Cited (Backward Citations)

US2968689A Cited
US4113334A Cited
US4245880A Cited
DE2915587A1 Cited
US4419554A Cited
US4493515A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1990-11-09 1991-05-11 1991-11-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1994-11-09 1995-05-11 1995-11-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1998-11-09 1999-05-11 1999-11-10 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag