US 12,220,939 B1
Locking marker cap assembly and method of use
Joseph William Twigg, San Tan Vly, AZ (US); and Richard Lee Twigg, Cornelius, OR (US)
Filed by Joseph William Twigg, San Tan Vly, AZ (US); and Richard Lee Twigg, Cornelius, OR (US)
Filed on May 20, 2024, as Appl. No. 18/669,357.
Int. Cl. B43K 23/12 (2006.01)
CPC B43K 23/12 (2013.01) 3 Claims
OG exemplary drawing
 
1. A locking cap assembly for a pen style marker, comprising:
an expandable, polymer removeable circular, cylindrical lock ring deformable about and frictionally engageable over differing sizes of a nose cone of said pen style markers, said lock ring having an exterior thread formed thereon, and when in its unstretched configuration said lock ring has a inner diameter that is smaller than a outer diameter of a distal end of said nose cone, and in its expanded configuration is no larger than a outer diameter of said distal end of said nose cone;
a locking cap having an outer cap and
an inner cap that resides and floats longitudinally within said outer cap, said inner cap having an interior thread formed thereon a distal interior end thereof;
an inwardly facing protrusion that constrains said inner cap within said outer cap;
a first portion lock engagement means formed on said inner cap; and
a second portion lock engagement means formed on said outer cap; and
wherein said first portion lock engagement means is matingly engageable with said second portion lock engagement means to allow the rotation of said inner cap and said outer cap in unison; and
wherein exterior thread and said interior thread are threadingly engageable to connect said locking cap on top of said expandable lock ring.