Mechanical pencil with chuck closing by normal writing grip

Details Mechanical pencil with chuck closing by normal writing grip Mechanical pencil with chuck closing by normal writing grip

1978-05-09

1981-06-02

Bratlie, Steven A.

Coating implements with material supply

Solid material for rubbing contact or support therefor

Including holder

401 65, 401 82, 401 94, B43K 2122, B43K 2410

Patent

active

042708702

ABSTRACT:
Mechanical pencil construction wherein the operational movements to advance the lead are accomplished by providing one or more elastically deformable ribs or spring biased cam members that extend outwardly through axial slots in the pencil body in the normal finger gripping area. The radially inward depression of such ribs or cam members by the writer's fingers is converted to axial motion within the pencil, to thereby effect the necessary lead gripping and advancing operations.

REFERENCES:
patent: 223498 (1880-01-01), Fraser
patent: 269724 (1882-12-01), Senn
patent: 275517 (1883-04-01), Pusey
patent: 1518822 (1924-12-01), Saadi
patent: 1595150 (1926-08-01), Greening
patent: 1716354 (1929-06-01), Nelson
patent: 1866072 (1932-07-01), Woelm
patent: 2340665 (1944-02-01), Jacobs
patent: 2583069 (1952-01-01), Votruba
patent: 3813176 (1974-05-01), Kamo
patent: 3836264 (1974-09-01), Saito et al.
patent: 3883253 (1975-05-01), Naruse et al.
patent: 3914059 (1975-10-01), Mitsuya

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