Auto-control pencil suitable for pen leads of different sizes

Details Auto-control pencil suitable for pen leads of different sizes Auto-control pencil suitable for pen leads of different sizes

2007-01-23

2007-01-23

Walczak, David J. (Department: 3751)

Coating implements with material supply

Solid material for rubbing contact or support therefor

Including holder

C401S075000

Reexamination Certificate

active

11323699

ABSTRACT:
An auto-control pencil suitable for pen leads of different sizes comprises a pen tube; a guide tube; a push rod; a spring; a rotary head; an inner head; and an outer head. When an inner head is pressed downwards along the outer head, the presses at the front end of the inner head will reduce inwards so that one end of the pen lead resists against the opening at the front end of a push rod and moreover another end thereof is clamped by the presses so that the two ends of the pen leads are fixed. Pen leads of different sizes can be used. Thus one pen is sufficient.

REFERENCES:
patent: 2460345 (1949-02-01), Gruber
patent: 3056996 (1962-10-01), Aversa
patent: 4610557 (1986-09-01), Malm

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