Mechanical pencil with automatic lead advance

Details Mechanical pencil with automatic lead advance Mechanical pencil with automatic lead advance

1982-05-26

1984-07-10

Bratlie, Steven A.

Coating implements with material supply

Solid material for rubbing contact or support therefor

Including means to limit tool projection

401 65, 401 67, 401 80, 401 81, B43K 2116

Patent

active

044590571

ABSTRACT:
A mechanical pencil with automatic lead advance in which a slider is temporarily locked at the time when a rearward thrust applied to the pencil tip is released. The slider is locked by an arrangement in which a movable locking tube is disposed around the slider. The locking tube can be inclined relative to the longitudinal axis of the pencil by a spring device so that the slider, when retracted, can be temporarily locked by the inclination of the locking tube.

REFERENCES:
patent: 2911948 (1959-11-01), Spector
patent: 3880530 (1975-04-01), Katz
patent: 4270870 (1981-06-01), Hashimoto et al.
patent: 4343558 (1982-08-01), Fujiwara

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