US3631320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety device for convenience-outlet connections
Assignee: Individual
•
Filing: 1970-06-30
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Granted: 1971-12-28
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Expires: 1990-06-30
Abstract
Abstract A collapsing flexible sleeve for insulating the blades of plugs connected with electrical convenience outlets is disclosed. In one embodiment the sleeve is a tapered rubber bellows which nests to minimum thickness on collapsing; in another embodiment the sleeve is an elastic spiral of insulative material.
Inventors
- 👤 William F Eckert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:26
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/44; H01R13/447; H01R13/453; H01R13/4538
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
64 words
A safety device for insulating the blades of plugs connected with electrical convenience outlets, comprising tapered plural corrugation collapsing sleeve means for covering a portion of the length of a plug blade and means for securing the collapsing sleeve means to a plug, thereby providing for the corrugations of said tapered plural corrugation bellows collapsing sleeve means to rest flat when collapsed by compression.
Claim 2
Dependent Claim
64 words
A safety device for insulating the blades of plugs connected with electrical convenience outlets, comprising tapered plural corrugation collapsing sleeve means for covering a portion of the length of a plug blade and means for securing the collapsing sleeve means to a plug, thereby providing for the corrugations of said tapered plural corrugation bellows collapsing sleeve means to rest flat when collapsed by compression.
Claim 3
Dependent Claim
27 words
A safety device as recited in claim 1, wherein one end of the collapsing sleeve means is constricted for affixation to the root of a plug blade.
Claim 4
Dependent Claim
45 words
A safety device as recited in claim 1, wherein the plug is of the type adapted for use with a removable substantially flat cover having aN aperture for a plug blade, and wherein the safety device includes a said cover integral with said collapsing sleeve.
Claim 5
Dependent Claim
17 words
A safety device as recited in claim 1, wherein the taper comprises a spiral of insulative material.
Claim 6
Dependent Claim
15 words
A safety device as recited in claim 1, wherein the taper comprises a continuous sleeve.
Claim 7
Dependent Claim
115 words
A safety device for insulating the blades of plugs connected with electrical convenience outlets, comprising tapered collapsing sleeve means for covering a portion of the length of a plug blade, a plug having a blade within said tapered collapsing sleeve means with the taper opening toward the free end of the plug blade, means for securing the tapered collapsing sleeve means to said plug blade, and an electrical convenience outlet of the type having an insulated face with a tapered aperture therein for receiving a plug blade the open end of the taper of the tapered collapsing sleeve means being adapted to fit within a portion of the tapered aperture in said electrical convenience outlet.
Claim 8
Dependent Claim
115 words
A safety device for insulating the blades of plugs connected with electrical convenience outlets, comprising tapered collapsing sleeve means for covering a portion of the length of a plug blade, a plug having a blade within said tapered collapsing sleeve means with the taper opening toward the free end of the plug blade, means for securing the tapered collapsing sleeve means to said plug blade, and an electrical convenience outlet of the type having an insulated face with a tapered aperture therein for receiving a plug blade the open end of the taper of the tapered collapsing sleeve means being adapted to fit within a portion of the tapered aperture in said electrical convenience outlet.
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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |