US 12,241,497 B2
Chalk box with improved end hook grip
Cecil Wilson, Sandford, NC (US)
Assigned to APEX BRANDS, INC., Apex, NC (US)
Appl. No. 17/618,934
Filed by APEX BRANDS, INC., Apex, NC (US)
PCT Filed Jun. 11, 2020, PCT No. PCT/US2020/037179
§ 371(c)(1), (2) Date Dec. 14, 2021,
PCT Pub. No. WO2020/257040, PCT Pub. Date Dec. 24, 2020.
Claims priority of provisional application 62/862,225, filed on Jun. 17, 2019.
Prior Publication US 2022/0316520 A1, Oct. 6, 2022
Int. Cl. B44D 3/38 (2006.01); F16B 45/00 (2006.01)
CPC F16B 45/00 (2013.01) [B44D 3/38 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An end hook for a measuring device, the end hook comprising:
a stem portion extending in a first plane from a proximal end to a distal end, the end hook being operably coupled to the measuring device at the proximal end; and
an engaging portion defined by a set of teeth having external lateral edges that define a hook width therebetween, the engaging portion extending away from the stem portion by an engaging length,
wherein each of the teeth includes a portion thereof that extends away from the distal end of the stem portion in a second plane that is substantially perpendicular to the first plane,
wherein each of the teeth further includes a portion thereof, proximate to a distal end of the teeth, that bends out of the second plane to form an engaging angle, and
wherein the hook width is in a range between about 16.5 mm and about 21 mm, and the engaging angle is about 45 degrees.