US4847531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterproofing device for display unit
Assignee: Mitsubishi Electric Corp
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Filing: 1988-03-16
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Granted: 1989-07-11
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Expires: 2008-03-16
Abstract
Abstract A device for waterproofing a display unit, comprising a display element which is a basic component of the light emission section of a large-sized display equipment; a plug electrically and mechanically connected to the display element; a socket fitted on the plug; a unit case having a display element insertion hole in a portion belonging to the unit case and facing the socket; and an end face seal fitted around the display element insertion hole and located in watertight contact with the unit case and the plug therebetween.
Inventors
- 👤 Katsuya Tsuji
- 👤 Shun-ichi Futatsuishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:41
CPC Classifications
F; F21; F21V; F21V31/00; G; G09; G09F; G09F13/00; G09F13/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
88 words
A device for waterproofing a display unit, comprising a display element; a plug electrically and mechanically connected to the display element; a socket fitted on the plug; a unit case having a display element insertion hole and a groove circumscribing said insertion hole, said plug being insertable into said insertion hole; and an end face seal disposed in said groove so as to circumscribe the display element insertion hole such that said end face seal is located between the unit case and the plug in watertight contact therewith.
Claim 2
Independent Claim
88 words
A device for waterproofing a display unit, comprising a display element; a plug electrically and mechanically connected to the display element; a socket fitted on the plug; a unit case having a display element insertion hole and a groove circumscribing said insertion hole, said plug being insertable into said insertion hole; and an end face seal disposed in said groove so as to circumscribe the display element insertion hole such that said end face seal is located between the unit case and the plug in watertight contact therewith.
Claim 3
Dependent Claim
23 words
The waterproofing device of claim 1, wherein the inside diameter of said face seal is smaller than the diameter of said insertion hole.
Claim 4
Dependent Claim
23 words
The waterproofing device of claim 1, wherein said plug is fitted to said socket by substantially L-shaped engaging pins which engage said socket.
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) | 1992-07-10 | 1993-01-09 | 1993-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-10 | 1997-01-09 | 1997-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-10 | 2001-01-09 | 2001-07-11 | $7700.00 | Window Closed / Lapsed |