Patent US4226509A successfully refreshed from Google Patents.
US4226509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display device comprising a liquid display medium
Assignee: US Philips Corp
•
Filing: 1978-12-13
•
Granted: 1980-10-07
•
Expires: 1998-12-13
Abstract
Abstract In a display device having a liquid display medium, for example liquid crystal, the filling apertures have to be readily sealed. In a seal which is very suitable for mass production a piece of elastic material is drawn through two oppositely located filling apertures or between a brace across the filling aperture and the filling aperture.
Inventors
- 👤 Jacobus H. Jacobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:06
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/153; G02F1/161; G02F1/13; G02F1/133; G02F1/1333; G02F1/1341
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
76 words
A display device comprising a liquid display medium between two supporting plates and having a filling aperture which is sealed by means of a sealing member of an elastic material, characterized in that the sealing member is of an elastic material and extends through an aperture which is narrower than the cross-section of the elastic material in the stress-less condition, and that both ends of the sealing member are situated on the outside of the device.
Claim 2
Dependent Claim
76 words
A display device comprising a liquid display medium between two supporting plates and having a filling aperture which is sealed by means of a sealing member of an elastic material, characterized in that the sealing member is of an elastic material and extends through an aperture which is narrower than the cross-section of the elastic material in the stress-less condition, and that both ends of the sealing member are situated on the outside of the device.
Claim 3
Dependent Claim
40 words
A display device as claimed in claim 1, characterized in that both supporting plates have a filling aperture, said filling apertures being situated straight opposite to each other, and a wire-shaped piece of elastic material extends through both filling apertures.
Claim 4
Dependent Claim
44 words
A display device as claimed in claim 1, characterized in that a sealing edge of the device has at least one pair of filling apertures which are situated in the elongation of each other and through which a wire-shaped piece of elastic material extends.
Claim 5
Dependent Claim
49 words
A display device as claimed in claim 1, in which one of the supporting plates has a filling aperture, characterized in that a brace is secured across the filling aperture and that a strip-shaped piece of elastic material extends through the aperture between the brace and the filling aperture.
Claim 6
Dependent Claim
20 words
A display device as claimed in claim 1, 2, 3 or 4, characterized in that the elastic material is rubber.
Claim 7
Dependent Claim
23 words
A display device as claimed in claim 1, 2, 3 or 4, characterized in that the display medium is a liquid crystal material.
Claim 8
Dependent Claim
25 words
A display device as claimed in claim 1, 2, 3 or 4, characterized in that the display medium is a solution of an electrochrome material.
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) | 1983-10-07 | 1984-04-07 | 1984-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-07 | 1988-04-07 | 1988-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-07 | 1992-04-07 | 1992-10-07 | $7700.00 | Window Closed / Lapsed |