Pen recorder driving mechanism

Details Pen recorder driving mechanism Pen recorder driving mechanism

G - Physics

01

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234/37, 234/39

G01R 5/06 (2006.01) G01R 1/02 (2006.01) G01R 1/04 (2006.01) G01R 5/04 (2006.01) G01R 13/08 (2006.01)

Patent

CA 1097598

Abstract of the Disclosure A pen recorder driving mechanism for deflecting a recorder pen on a writing medium in response to electrical input signals is disclosed. The improved pen recorder driving mechanism includes a novel laminar coil assembly rotatably mounted in a precision air gap between a permanent inner core magnet and a highly permeable outer shell. The coil assembly comprises a coil frame having an inner frame around which the windings of a driving coil are wound and an outer frame overlayered on the windings and the inner frame. The coil frame laminations are rigidified by a bonding material applied to the windings during their assembly. The coil frame is subsequently shaped into a generally rectangular concave convex configuration by stretching the laminations during manufacture with a forming tool. Half shafts and end pieces are attached to the transverse legs of the coil frame after shaping to define the rotational axis of the coil assembly and to provide a mounting structure.

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