Ballistic print hammer assembly

Details Ballistic print hammer assembly Ballistic print hammer assembly

B - Operations, Transporting

41

J

310/61, 101/94

B41J 9/30 (2006.01) B41J 9/127 (2006.01) B41J 9/38 (2006.01)

Patent

CA 1054442

BALLISTIC PRINT HAMMER ASSEMBLY ABSTRACT OF DISCLOSURE A ballistic print hammer assembly which includes a pivotally mounted print hammer driven by an electromagnetic actuator, characterized by low cost and ease of manufacture, high velocity and short dwell time. A rigid pivot upon which the hammer is mounted is simply secured to one side of a frame member. One end of the hammer is disposed in a slot of the armature of the electromagnetic actuator. The stator of the actuator is arranged to be in- serted (by means of screw threads) from the other side of the frame member through an aperture so that the armature fits within the actuator stator cav- ity. An impression control spring is further disposed in a central cavity of the armature to continually produce a biasing force on the hammer which in the free-flight condition of the hammer is a decelerating force.

251650

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