Self-contained closure for writing instruments and the like

Details Self-contained closure for writing instruments and the like Self-contained closure for writing instruments and the like

1975-11-10

1976-11-16

Charles, Lawrence

Coating implements with material supply

Projectable and retractable tool

Clasp associated with project-retract means or with latch

401107, B43K 900, B43K 2400

Patent

active

039921158

ABSTRACT:
A pen, scribe or similar instrument fits into and projects out one end of a central axial aperture in a barrel. The barrel has a longitudinal groove in its surface and angularly displaced depressions in its outer surface at the end from which the pen projects. A cap assembly has an elongated shaft axially movable and oscillatable in the longitudinal groove and held in place by an upper and lower spring around the barrel. A helical spring biases the shaft toward retracted position with an end of the shaft projecting out the end of the barrel opposite the pen. The upper end of the shaft carries a fitting having a pocket clip and a pen cap. In retracted position, the clip and cap fit into their respective depressions. By depressing the shaft end against the force of the spring the clip and cap are raised and the spiral groove and upper spring cause them to pivot with the shaft until the cap is above the tip of the pen and the clip projecting outward of the barrel. The spring then partially projects the shaft end and the cap covers the pen tip. The closure is manually returned to original position. A modified construction is described.

REFERENCES:
patent: 2416112 (1947-02-01), Moore
patent: 2559555 (1951-07-01), Zepelovich

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