US4749363A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extension cord safety box
Assignee: Individual
•
Filing: 1987-03-12
•
Granted: 1988-06-07
•
Expires: 2007-03-12
Abstract
Abstract A junction box for extension cords which serves to secure the point at which extension cords are joined together in order to prevent access to such juncture and protect against an electric shock.
Inventors
- 👤 Robert Luska
- 👤 David Truax
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:12
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/44
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
130 words
A safety box for the junction of an extension cord terminating in a cube tap and one or more appliance cords comprising: a box having a generally square configuration with a cover connected by a hinge to the upper margin of one wall, the other three walls being provided with slots for receiving said cords; said box further having oblique walls joining the slotted walls, with said oblique walls each having a strap spaced therefrom; said hinged cover being provided with plates or skirts for partially closing said slots, when said box is closed; said cover being also provided with hooks for engaging said straps when said cover is in its closed position; whereby said extension cord junction is inaccessible when closed inside of said safety box with hooks engaged.
Claim 2
Dependent Claim
130 words
A safety box for the junction of an extension cord terminating in a cube tap and one or more appliance cords comprising: a box having a generally square configuration with a cover connected by a hinge to the upper margin of one wall, the other three walls being provided with slots for receiving said cords; said box further having oblique walls joining the slotted walls, with said oblique walls each having a strap spaced therefrom; said hinged cover being provided with plates or skirts for partially closing said slots, when said box is closed; said cover being also provided with hooks for engaging said straps when said cover is in its closed position; whereby said extension cord junction is inaccessible when closed inside of said safety box with hooks engaged.
Claim 3
Dependent Claim
35 words
A safety box as defined in claim 1 wherein the engagement of said hooks & straps is made secure by a transverse rib on each hook, and a reinforcing brace secured to each oblique wall.
Claim 4
Dependent Claim
15 words
A safety box as defined in claim 2 which is fabricated from a thermoplastic resin.
Claim 5
Dependent Claim
14 words
A safety box as defined in claim 3 in which the resin is polypropylene.
References Cited (Backward Citations)
US3183302A
Cited
US3683314A
Cited
US4229616A
Cited
US4227764A
Cited
US4643505A
Cited
US4382649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-07 | 1991-12-07 | 1992-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-07 | 1995-12-07 | 1996-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-07 | 1999-12-07 | 2000-06-07 | $7700.00 | Window Closed / Lapsed |