Patent US1848318A successfully refreshed from Google Patents.
US4029382A
Expired / Lapsed
US
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Watertight means for electric plug-receptacle coupling
Assignee: Denkosha KK
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Filing: 1975-11-28
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Granted: 1977-06-14
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Expires: 1995-11-28
Abstract
Abstract A tubular packing with a flexible flange means is disposed along the surface where an electric plug mates with a receptacle. When mated, the flange means flexes for ensuring watertightness at the plug-receptacle coupling.
Inventors
- 👤 Yosiharu Koda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:12
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/46; H01R13/52; H01R13/5219
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
144 words
A watertight means for an electric plug-receptacle coupling, the electric plug and the receptacle having an axially extending support surface, and the support surfaces facing each other to define therebetween an annular space having a radius and each having an end, the support surface ends being axially spaced from each other, the watertight means consisting of a tubular packing between the support surface ends and secured to one of the support surfaces, the packing comprising a series of more than two flanges extending radially into contact with the other one of the support surfaces and having a radius larger than the radius of the annular space, and all the flanges in contact with the other support surface being arcuately flexed by the other support surface in a direction from the end of the one support surface towards the end of the other support surface.
Claim 2
Dependent Claim
144 words
A watertight means for an electric plug-receptacle coupling, the electric plug and the receptacle having an axially extending support surface, and the support surfaces facing each other to define therebetween an annular space having a radius and each having an end, the support surface ends being axially spaced from each other, the watertight means consisting of a tubular packing between the support surface ends and secured to one of the support surfaces, the packing comprising a series of more than two flanges extending radially into contact with the other one of the support surfaces and having a radius larger than the radius of the annular space, and all the flanges in contact with the other support surface being arcuately flexed by the other support surface in a direction from the end of the one support surface towards the end of the other support surface.
Claim 3
Dependent Claim
15 words
The watertight means of claim 1, wherein the flanges are integral with the tubular packing.
Claim 4
Dependent Claim
56 words
The watertight means of claim 1, wherein the electric plug is a male plug member having the one support surface and defining recess means for receiving plug blades, and the receptacle is a female member carrying the plug blades, the receptacle member having the other support surface, the other support surface surrounding the one support surface.
Claim 5
Dependent Claim
42 words
The watertight means of claim 1, wherein the electric plug is a male electric plug receiver having the one surface, and the receptacle is a blind cover therefor having the other support surface, the other support surface surrounding the one support surface.
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) | 1980-06-13 | 1980-12-13 | 1981-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-13 | 1984-12-13 | 1985-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-13 | 1988-12-13 | 1989-06-14 | $7700.00 | Window Closed / Lapsed |