Writing instrument with rotatable advancement and retraction

Details Writing instrument with rotatable advancement and retraction Writing instrument with rotatable advancement and retraction

1995-01-17

1996-08-20

Bratlie, Steven A.

Coating implements with material supply

Projectable and retractable tool

By screw mechanism

401 99, 401109, 401112, B43K 2406, B43K 712

Patent

active

055473016

ABSTRACT:
The present invention provides writing instruments having a mechanism for extending and retracting a writing tip and advancing a lead by rotational operation. The writing instrument is comprised of a front tubular member (1); a front inner tubular member (2) disposed within the front tubular member (1); a refill (3) inserted into the front inner tubular member (2); and a driver (10) mounted in the front tubular member (1) and the front inner tubular member (2). The driver (10) is allowed to rotate but not be axial displaced relative to the front tubular member (1) and the front inner tubular member (2). A rear tubular member (5) is detachably connected to the driver (10) so as not to allow rotation relative to the driver (10). A rear inner tubular member (4) is inserted in the driver (10). The rear inner tubular member (4) and the driver (10) interengage with each other by engagement between at least one axial groove (11) and corresponding projections (12). The writing instrument further comprises an inclined path (7) provided on one of either front inner tubular member (2) or the rear inner tubular member (4). The inclined path (7) extends obliquely relative to the axial line of the writing instrument from a beginning end (7A) and a terminal end (7B). A projection (8) provided on the other of either the front inner tubular member (2) or the rear inner tubular member (4), engages the inclined path (7).

REFERENCES:
patent: 2454086 (1948-11-01), Randolph
patent: 3414359 (1968-12-01), Malm
patent: 4533272 (1985-08-01), Sakai
patent: 4844640 (1989-07-01), Ganz
patent: 5048991 (1991-09-01), Guo

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2325962