Coating implements with material supply – Projectable and retractable tool – Including retraction spring and projected-position retainer
Patent
1975-04-16
1976-03-16
Charles, Lawrence
Coating implements with material supply
Projectable and retractable tool
Including retraction spring and projected-position retainer
B43K 2406
Patent
active
039443710
ABSTRACT:
A retractable ball-point pen includes a housing comprising a barrel and cap, the latter being rotatable with respect to the former to control extension and retraction of a writing tube located within the housing. A ferrule which is pressfit into an opening at the non-writing end of the barrel serves as a mount for a guide bushing having an offset bore therein through which a writing tube extends. The cap rotates about the cylindrical surface presented by the bushing and a retaining ring which engages the inner wall of the cap prevents axial movement of the cap. A cam member which includes a helical cam surface is fixedly mounted in the cap and a spring biases writing tube against the cam surface so that rotation of the cap in first direction causes extension of the tube while rotation in the opposite direction causes retraction of the tube.
REFERENCES:
patent: 2865331 (1958-12-01), Marcotte
patent: 2865333 (1958-12-01), Hechtle
patent: 3315643 (1967-04-01), Eratico
patent: 3679318 (1972-07-01), Liguori
patent: 3792931 (1974-02-01), Ganz
Charles Lawrence
Stacie Pen Corporation
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