Pint wire actuator
US4468142A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1982 |
| Grant date | Aug 28, 1984 |
| Priority date | — |
| Expiry date | Nov 12, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/285
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A solenoid-type print wire actuator includes a unitary one-piece bobbin formed of a magnetically permeable material and having two axially spaced-apart annular grooves in the outer surface thereof. An electromagnetic coil is wound on the bobbin. A dumbbell-shaped armature is disposed coaxially within the bobbin and is connected to the print wire for axial movement thereof, the armature having two cylindrical piston portions respectively disposed adjacent to the bobbin grooves. The ends of the bobbin are respectively supported in bores in the leg portions of a U-shaped member, the leg portions being interconnected by another piece to form a frame of magnetically permeable material to define a flux path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.