Patent US4110884A successfully refreshed from Google Patents.
US4110884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making dust cover for printing needles
Assignee: Facit AB
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Filing: 1977-04-22
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Granted: 1978-09-05
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Expires: 1997-04-22
Abstract
Abstract A protective dust cover for the needles of a mosaic printing head which eliminates the need for precision matching of segments that fit together to form holes for accepting printing needles passing therethrough. There is no precise arrangement of the parts of a dust cover to furnish an effective printing needle dust cover.
Inventors
- 👤 Sven Gunnar Valter Stenudd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:27
CPC Classifications
B; B41; B41J; B41J29/00; B41J29/12; B41J2/00; B41J2/22; B41J2/23; B41J2/235; B41J2/25; B41J2/255; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/496; Y10T29/49826; Y10T29/49833; Y10T29/49861
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
67 words
A method of providing a dust proof cover for printing needles of a mosaic printing head having an opening comprising: placing a thin layer of a selected suitable material over the opening of the printing head for said printing needles, and repeatedly moving each of said printing needles into engagement with said thin layer of material to wear holes therein through which said printing needles can pass.
Claim 2
Independent Claim
67 words
A method of providing a dust proof cover for printing needles of a mosaic printing head having an opening comprising: placing a thin layer of a selected suitable material over the opening of the printing head for said printing needles, and repeatedly moving each of said printing needles into engagement with said thin layer of material to wear holes therein through which said printing needles can pass.
Claim 3
Dependent Claim
28 words
The method as claimed in claim 1 wherein said layer is stainless steel which is placed over said opening and attached to adjacent parts of said print head.
Claim 4
Dependent Claim
20 words
The method as claimed in claim 1 wherein said layer is a Mylar tape that is stretched over said opening.
Claim 5
Dependent Claim
20 words
The method as claimed in claim 1 wherein said layer is a polytetrafluoroethylene tape that is stretched over said opening.
Claim 6
Dependent Claim
36 words
The method as claimed in claim 1 wherein said thin layer and adjacent parts of said print head are constituted of the same material, said layer being formed by being molded together with said adjacent parts.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-04 | 1982-03-06 | 1982-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-04 | 1986-03-06 | 1986-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-04 | 1990-03-06 | 1990-09-05 | $7700.00 | Window Closed / Lapsed |