Coating implements with material supply – Projectable and retractable tool – By screw mechanism
Patent
1988-08-23
1989-07-04
Bratlie, Steven A.
Coating implements with material supply
Projectable and retractable tool
By screw mechanism
401109, B43K 712, B43K 2414
Patent
active
048446408
ABSTRACT:
A simplified retractable writing instrument includes a barrel and a cap with end portions telescopically joined near the mid portion of the instrument. Internally a cartridge is spring biased towards a retracted position with an end remote from its writing tip engaged by a closure plug secured to the cap. The end portion of the barrel received telescopically in the cap includes a slanted slot. The slot's edges engage a rivet that projects inwardly from the cap. Rotation of the barrel relative to the cap causes axial movement of the one with respect to the other. This axial movement forces the writing cartridge to project its tip from the barrel by virtue of the abutment by the plug. Return axial movement permits retraction by the biasing spring.
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Bratlie Steven A.
Walgan Corporation
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