Writing instrument with projecting and retracting mechanism

Details Writing instrument with projecting and retracting mechanism Writing instrument with projecting and retracting mechanism

1974-06-20

1976-05-11

Charles, Lawrence

Coating implements with material supply

Projectable and retractable tool

Clasp associated with project-retract means or with latch

B43k 2402

Patent

active

039558932

ABSTRACT:
A writing instrument, such as a ball-point pen, having a writing cartridge and a mechanism for projecting and retracting said writing cartridge, said mechanism being actuated by a pocket clip on the writing instrument and comprising a cam element with high and low cam faces and a cam follower which is alternately engageable with said high and low cam faces, engagement between the cam follower and the high cam face causing projection of the writing cartridge, and engagement between the cam follower and the low cam face causing retraction of the writing cartridge.

REFERENCES:
patent: 2809609 (1957-10-01), Clary et al.
patent: 2881736 (1959-04-01), Zepelovitch
patent: 2988055 (1961-06-01), Platt
patent: 3071112 (1963-01-01), Lovejoy et al.
patent: 3130710 (1964-04-01), Hansen et al.
patent: 3203402 (1965-08-01), Lockwood
patent: 3288114 (1966-11-01), Ritter

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