Jam resistant chalk reel

Patent metadata

Field	Value
Publication number	US-12304235-B2
Application number	US-202418411749-A
Country	US
Kind code	B2
Filing date	Jan 12, 2024
Priority date	Mar 18, 2022
Publication date	May 20, 2025
Grant date	May 20, 2025

Abstract

A chalk reel includes a housing defining a chalk chamber and an opening from the chalk chamber; a spool positioned within the chalk chamber; and a line wound on the spool and extending through the opening, the line having a width of dimension X. The spool comprises an axial hub and a sidewall. The sidewall comprises a plurality of apertures extending through the sidewall from a first face distal from the axial hub to a second face proximal to the axial hub. Each of the plurality of apertures having a maximum width of dimension Y. The dimension Y is sized so that no loops of the line may fit through each of the plurality of apertures.

First claim

What is claimed is:

1. A chalk reel comprising:
a housing defining a chalk chamber and an opening from the chalk chamber;
a spool positioned within the chalk chamber; and
a line wound on the spool and extending through the opening, the line having a width of dimension X;
wherein the spool comprises an axial hub and a sidewall;
wherein the sidewall comprises a plurality of apertures extending through the sidewall from a first face distal from the axial hub to a second face proximal to the axial hub;
wherein each of the plurality of apertures having a maximum width of dimension Y;
wherein the dimension Y is smaller than a size of a loop of the line, so that no loops of the line may fit through each of the plurality of apertures.

2. The chalk reel of claim 1 , wherein the dimension X is a compressed width of the line.

3. The chalk reel of claim 2 , wherein the dimension X is approximately between 0.25 mm and 1.25 mm.

4. The chalk reel of claim 1 , wherein the dimension X is approximately between 0.5 and 2.5 mm.

5. The chalk reel of claim 1 , wherein the dimension Y of each of the plurality of apertures is greater than 0.015 mm.

6. The chalk reel of claim 1 , wherein the plurality of apertures comprises greater than twenty apertures.

7. The chalk reel of claim 1 , wherein the spool comprises a second sidewall opposite the axial hub from the first sidewall.

8. The chalk reel of claim 7 , wherein the plurality of apertures is formed on both the first sidewall and the second sidewall.

9. The chalk reel of claim 8 wherein the plurality of apertures comprises greater than forty apertures.

10. The chalk reel of claim 1 wherein the line is formed from one or more of nylon, polyester, and cotton.

11. The chalk reel of claim 1 , wherein the spool is formed from one or more of metal and plastic.

12. The chalk reel of claim 1 , wherein the sidewall comprises a mesh or perforated material defining the apertures.

13. The chalk reel of claim 12 , wherein the sidewall is defined by the mesh or perforated material.

14. The chalk reel of claim 13 , further comprising reinforcements to support the mesh or perforated material.

15. The chalk reel of claim 1 , wherein dimension Y is less than or equal to approximately twice dimension X.

16. The chalk reel of claim 15 , wherein the dimension Y is less than approximately twice the dimension X.

Assignees

• Stanley Black & Decker Inc

Inventors

• Parker Gregory David
• Lo Kan-Ping
• Haboubi Gabriel A

Classifications

• B65H75/4431

  Manual stop or release button · CPC title

• B65H75/406

  hand-held during use (B65H75/48, B65H75/4473 take precedence) · CPC title

• B44D3/38 Primary

  Cord line chalkers · CPC title