Tip for ball point pen

Details Tip for ball point pen Tip for ball point pen

1979-04-27

1981-02-17

Coughenour, Clyde I.

Coating implements with material supply

Including ball, roller or endless-belt tool

Ball

401214, B43K 710

Patent

active

042511640

ABSTRACT:
In a tip for a ball point pen including a cylindrical metallic tip body having a pointed end, a ball receiving hole having its opening at the pointed end of the tip body, a ball supporting seat of a plastic held in the bottom of the ball receiving hole, a bore for delivering ink to the ball receiving hole through the ball supporting seat and having its opening at the end of the tip body opposite to the pointed end, and a ball rotatably received within the ball receiving hole and supported on the seat, there is provided an improvement constituted by a recess formed in the bottom surface of the ball receiving hole, the recess having at least one angular portion, the ball supporting seat being deformed to fill all the corners of the bottom of the hole including the recess, thereby preventing the ball supporting seat from rotating in the bottom surface of the ball receiving hole. Further, by forming at least one protrusion in the vicinity of the upper edge around the recess, the rotation and the axial movement of the ball supporting seat can be prevented.

REFERENCES:
patent: 2487483 (1949-11-01), Seckers
patent: 2646776 (1953-07-01), Scholz
patent: 3048148 (1962-08-01), Sirianni
patent: 3904297 (1975-09-01), Hori

Affiliated with

Also associated with

Rating

Tip for ball point pen does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tip for ball point pen, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tip for ball point pen will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2259817