Writing instrument
AssigneeBerendsohn AG
InventorErnst R. Kitzerow
Life of this patent
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Abstract
A retractable ballpoint pen has a body and a point secured to a flexible tubular ink reservoir. The ink reservoir is secured to a rotatable element within the body, movement of which element causes the pen to be retracted and projected and during that movement the reservoir follows a generally circular path.
Claims18
A writing instrument comprising a body, a writing point secured to a flexible tubular ink reservoir mounted upon a rotatable hearing structure arranged within said body, said point and said ink reservoir being movable relative to said body along a path between a retracted inoperable position and a projected writing position, wherein said ink reservoir performs a nonlinear movement as said point is moved along said path.
Dependencies are inferred from the claim text.