Lead delivery mechanism for mechanical pencil

Details Lead delivery mechanism for mechanical pencil Lead delivery mechanism for mechanical pencil

1985-02-21

1987-06-30

Bratlie, Steven A.

Coating implements with material supply

Solid material for rubbing contact or support therefor

Including means to advance material

401 85, 401 86, 401 94, B43K 2100, B43K 2122

Patent

active

046766847

ABSTRACT:
A lead delivery mechanism is integrally composed of a lead chuck for biting lead fitted to the extreme end of a lead pipe, sleeves abutting upon a chuck clamping ring loosely fitted to the head portion of the lead chuck, a spring member for clamping the chuck disposed resiliently between the sleeves and the lead pipe, and a locking ring locked loosely with the lead chuck to lock the rear end of the spring member, whereby such lead delivery mechanism may be handled as a block in assembly operations for mechanical pencils.

REFERENCES:
patent: 3836264 (1974-09-01), Saito et al.
patent: 3998558 (1976-12-01), Katz
patent: 4171170 (1979-10-01), Kageyama et al.
patent: 4343558 (1982-08-01), Fujiwara
patent: 4371277 (1983-02-01), Kageyama et al.
patent: 4386865 (1983-06-01), Kageyama et al.

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