US4433927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnet assembly for mosaic printing head and related manufacturing method
Assignee: Bull HN Information Systems Italia SpA
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Filing: 1982-02-19
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Granted: 1984-02-28
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Expires: 2002-02-19
Abstract
Abstract An electromagnet assembly for a matrix printing head which can be automatically assembled and a manufacturing process for automatically assembly said electromagnet assembly.
Inventors
- 👤 Pier G. Cavallari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:06
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/22; B41J2/23; B41J2/27; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49073; Y10T29/49117; Y10T29/49124; Y10T29/4913; Y10T29/49146
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
142 words
An electromagnet assembly for mosaic printing head comprising: (a) a plurality of separate electromagnets, each one formed by a separate individual core and at least a winding coupled to said core, said winding being supported by a reel provided with electrical connecting pins; (b) a printed circuit board to which said plurality of electromagnets is fixed by soldering of said pins to said printed circuit board, with exclusion of any other means fixing together said electromagnets; (c) connection means through which said printed circuit board may be connected to an external electric circuit; and (d) insulating plastic means (enclosing) steadily encapsulating as an insert said printed circuit board and said plurality of electromagnets, except said connection means, in a unitary block, said plastic means and said printed circuit board being in lieu of any other mechanical support of said plurality of electromagnets.
Claim 2
Dependent Claim
142 words
An electromagnet assembly for mosaic printing head comprising: (a) a plurality of separate electromagnets, each one formed by a separate individual core and at least a winding coupled to said core, said winding being supported by a reel provided with electrical connecting pins; (b) a printed circuit board to which said plurality of electromagnets is fixed by soldering of said pins to said printed circuit board, with exclusion of any other means fixing together said electromagnets; (c) connection means through which said printed circuit board may be connected to an external electric circuit; and (d) insulating plastic means (enclosing) steadily encapsulating as an insert said printed circuit board and said plurality of electromagnets, except said connection means, in a unitary block, said plastic means and said printed circuit board being in lieu of any other mechanical support of said plurality of electromagnets.
Claim 3
Dependent Claim
20 words
Electromagnet assembly as recited in claim 1 wherein said insulating plastic means encapsulate only partially the cores of said electromagnets.
Claim 4
Dependent Claim
31 words
An electromagnet assembly as recited in claim 2 wherein said cores comprise at least two columns, one of which is without winding and is partially encapsulated by said insulating plastic means.
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) | 1987-02-27 | 1987-08-29 | 1988-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-27 | 1991-08-29 | 1992-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-27 | 1995-08-29 | 1996-02-28 | $7700.00 | Window Closed / Lapsed |