Writing implement with automatic lead projection

Details Writing implement with automatic lead projection Writing implement with automatic lead projection

1982-05-14

1984-10-23

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 81, 401 94, B43K 2102, B43K 2116

Patent

active

044785291

ABSTRACT:
A propelling or automatic writing implement having a lead which can be projected from the implement without pushing. An inner frame having a chuck assembly for permitting advance of the lead but preventing retraction of the lead and a lead protecting tube having a holder for holding the lead with a suitable frictional force are housed in a main body and slidable axially thereof. A mechanism is provided for retracting the frame and the tube by a reaction to which the lead is subjected when pressed against the writing surface with a force of considerable magnitude and for returning them when the lead is released from the force, while permitting the tube to move backward and forward relative to the frame in the course of the reciprocating movement. The lead can be projected by the relative movement of the tube and the frame.

REFERENCES:
patent: 1908386 (1933-05-01), Wahl
patent: 2109604 (1938-03-01), Van Norsdall
patent: 3424535 (1969-01-01), Schischkow
patent: 3864046 (1975-02-01), Butka

Affiliated with

Also associated with

Rating

Writing implement with automatic lead projection does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Writing implement with automatic lead projection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Writing implement with automatic lead projection will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1596296