Writing tool

Coating implements with material supply – Solid material for rubbing contact or support therefor – Combined

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

401 64, B43K 2500, B43K 2110

Patent

active

057001014

ABSTRACT:
This invention is to a writing tool such as mechanical pencil or a ballpoint pen in which a writing shaft having a head member is inserted in an outer sleeve in such a manner that the head member projects from the outer sleeve. A stair or step and a spiral groove are provided on the forward inner surface and the rearward inner surface of a tubular cap, respectively, with an inside diameter of the rear part of the spiral groove being larger. A bearing part is brought into contact with a lead tank provided inside a forward art of the tubular part so that the forward part of the outer sleeve is movable in the axial direction and is locked in the turning direction against a rearward inner surface of the outer sleeve. The rearward part of the tubular body is provided with a slit, holding pieces of a stick-shaped object holder slidably inserted in said slit. A stick-shaped object is held by the holding pieces, and the projection is provided on each holder engaged with the spiral groove of the tubular cap.

REFERENCES:
patent: 3586452 (1971-06-01), Mason
patent: 3623822 (1971-11-01), Davidson
patent: 4901101 (1990-02-01), Petterson

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Writing tool 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 tool, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Writing tool will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1797913

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.