Write head for a drawing machine having a deformable mounting fo

Details Write head for a drawing machine having a deformable mounting fo Write head for a drawing machine having a deformable mounting fo

1988-03-30

1989-09-05

Haroian, Harry N.

Geometrical instruments

Scriber

B43L 1300

Patent

active

048625922

ABSTRACT:
A write head for an X-Y plotter comprises a write head body (10) movably mounted in a horizontal direction relative to a write medium (14) and a pen (30) movably mounted in a vertical direction with respect to the head body (10) between pen-up and pen-down positions. The mounting for the pen (30) allows movement with respect to the head body and (10) comprises a parallelogram-shaped deformable element (20) made out of molded plastic material. This deformable element has a first side portion (21) attached to the head body, a second side portion (22) supporting the pen and two parallel arms (23, 24) pivotally linking the first and second side portions through horizontal hinge portions of reduced thickness (23a, 23b, 24a, 24b). An actuator (40) has a permanent magnet (44) fixed to the head body and a coil (42) fixed to the second side portion and moves the pen between pen-up and pen-down positions.

REFERENCES:
patent: 3127678 (1964-04-01), Muldoon
patent: 4502797 (1985-03-01), Hilpert et al.
patent: 4559717 (1985-12-01), Scire et al.
patent: 4604007 (1986-08-01), Hall et al.

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