Latch mechanism for retractable writing instruments

Details Latch mechanism for retractable writing instruments Latch mechanism for retractable writing instruments

1990-10-31

1991-12-24

DeMille, Danton D.

Coating implements with material supply

Projectable and retractable tool

Clasp associated with project-retract means or with latch

401106, B43K 516

Patent

active

050746944

ABSTRACT:
Mechanism for putting the head of a shaft into and out of the head of an outer sleeve comprised of an outer sleeve (1), a long hole (2) formed in the outer sleeve (1), and a clip (3) to be put into and out of the outer sleeve (1) through the long hole (2). A shaft (4) is inserted in the outer sleeve (1), and a cam mechanism (8) cooperates with the clip (3) in a manner that causes the cam mechanism (8) to move forward and backward in an axial direction according to in and out movement of the clip (3). A spring (6) spring-biases the shaft (4) toward the cam mechanism.

REFERENCES:
patent: 2427069 (1947-09-01), Randolph
patent: 2811945 (1957-11-01), Keller
patent: 2887731 (1959-04-01), Zepelovitch
patent: 2988055 (1961-06-01), Platt
patent: 3071112 (1963-01-01), Lovejoy et al.
patent: 3920337 (1975-11-01), Ganz

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