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Keyring pocket pen
US 4974982 A

Publication number US4974982 A
Publication type Grant
Application number US 07/482,927
Publication date 4 Dec 1990
Filing date 22 Feb 1990
Priority date 22 Feb 1990
Fee status Paid
Inventors Thomas W. Nielson
Original Assignee Nielson Thomas W

ABSTRACT
A three piece pen is provided including a short elongated cap having a first open internally threaded end, an elongated pen holder of a length greater than the cap and including a pen point at one end and a hollow elongated tubular barrel having a first open, internally threaded end is provided. The second end of the cap includes structure for anchoring a keyring thereto, the second end of the barrel is closed and the second end of the pen holder remote from the point includes a circumferentially extending enlarged abutment spaced from the terminal end thereof. The second end of the pen holder further includes externally threaded shoulders on opposite sides of the abutment and upon each of which shoulders the internally threaded ends of the cap and barrel may be removably threadingly engaged, those portions of the shoulders immediately adjacent the abutment including reduced diameter bands in which O-rings are seated of outside diameters to be snugly received within smooth counter bores formed in the terminal ends of the internally threaded open ends of the cap and barrel.