US 12,233,665 B2
Chalk box with line lock assembly
Cecil Wilson, Sanford, NC (US); and Eric Van Fossen, Huntersville, NC (US)
Assigned to APEX BRANDS, INC., Apex, NC (US)
Appl. No. 17/440,033
Filed by APEX BRANDS, INC., Apex, NC (US)
PCT Filed Mar. 19, 2020, PCT No. PCT/US2020/023605
§ 371(c)(1), (2) Date Sep. 16, 2021,
PCT Pub. No. WO2020/191185, PCT Pub. Date Sep. 24, 2020.
Claims priority of provisional application 62/820,532, filed on Mar. 19, 2019.
Prior Publication US 2022/0176733 A1, Jun. 9, 2022
Int. Cl. B44D 3/38 (2006.01); B65H 75/40 (2006.01)
CPC B44D 3/38 (2013.01) [B65H 75/406 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A chalk box comprising:
a housing having an aperture;
a line lock cover operably coupled to the housing;
a reel assembly enclosed within the housing;
a string having a first end operably coupled to an end hook and configured to extend from the housing through the aperture and having a second end operably coupled to the reel assembly;
a chalk reservoir in which the string is retained or through which the string passes prior to extending out of the aperture;
a retraction assembly configured to interface with the reel assembly to enable the string, after extension from the housing, to be wound on the reel assembly responsive to operation of the retraction assembly; and
a line lock assembly configured to lock the retraction assembly to prevent winding or unwinding of the string,
wherein the line lock assembly comprises a line lock member disposed in a line lock member enclosure,
wherein rotation of the line lock cover, relative to the line lock member, rotates the line lock member to, based on a position of the line lock cover, lock the retraction assembly to prevent winding and unwinding of the string or unlock the retraction assembly to permit winding and unwinding of the string.