Hammer assembly

Details Hammer assembly Hammer assembly

B - Operations, Transporting

41

J

101/94

B41J 9/02 (2006.01) B41J 9/133 (2006.01)

Patent

CA 1085676

HAMMER ASSEMBLY ABSTRACT OF THE DISCLOSURE A hammer assembly comprising a housing having opposing open ends and an internal passage extending between the open ends. A hammer element is positioned in the housing for recip- rocal movement in the passage between first and second positions. The hammer element has an opening formed therein in which a biasing member is positioned. When enabled, the biasing member is capable of biasing the hammer element in a desired direction relative to the first and second positions. The housing is desirably fabricated of a self-lubricating material with the area of the opening at one of its ends being sub- stantially larger than the cross-sectional area of the hammer element taken along a plane perpendicular to the axis of motion of the hammer element at such one end in order for air to be freely vented from the passage during reciprocal move- ment of the hammer assembly. -1-

271162

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