Chalk line device

Patent metadata

Field	Value
Publication number	US-10071594-B2
Application number	US-201514971731-A
Country	US
Kind code	B2
Filing date	Dec 16, 2015
Priority date	Dec 16, 2014
Publication date	Sep 11, 2018
Grant date	Sep 11, 2018

Abstract

A chalk line device that includes a housing, a reel mounted for rotation within the housing, a liquid container disposed within the housing, and a handle connected with the reel and extending outside the housing is provided. The reel is constructed and arranged to carry a chalk line wound thereon. The reel is positioned in the liquid container such that the chalk line wound therein is at least partially submerged in the liquid chalk received in the liquid container. The liquid container has a sealed configuration and an unsealed configuration. In the unsealed configuration, the liquid container is configured to receive liquid chalk therein. In the sealed configuration, the liquid container substantially seals the liquid chalk received therein. The handle is operable to wind up the chalk line onto the reel.

First claim

What is claimed is:

1. A chalk line device, comprising:
a housing;
a chalk line;
a reel mounted for rotation within the housing, the reel constructed and arranged to carry the chalk line wound thereon;
liquid chalk;
a liquid container disposed within the housing, the liquid container having a sealed configuration and an unsealed configuration, wherein in the unsealed configuration the liquid container is configured to receive the liquid chalk therein, and in the sealed configuration the liquid container substantially seals the liquid chalk received therein,
the reel being positioned in the liquid container such that the chalk line wound therein is at least partially submerged in the liquid chalk received in the liquid container, and
a handle connected with the reel and extending outside the housing, the handle being operable to wind up the chalk line onto the reel,
wherein the liquid chalk comprises a composition comprising:
water or alcohol comprising 60% to 95% by volume;
powdered chalk particles comprising 5% to 40% by volume, wherein 90% of powdered chalk particles range in their maximum dimension from 10 microns to 200 microns; and
a stabilizing agent comprising 4% to 25% by volume.

2. The chalk line device of claim 1 , wherein the housing has a filler opening, and wherein the filler opening is configured to receive the liquid chalk therethrough for receipt into the liquid container.

3. The chalk line device of claim 2 , further comprising a seal structure configured to selectably seal the filler opening in a water tight sealing relation.

4. The chalk line device of claim 3 , wherein the seal structure comprises a movable door moveable between the sealed configuration and the unsealed configuration.

5. The chalk line device of claim 1 , wherein the housing comprises a chalk line opening, and wherein the chalk line opening is configured to receive a portion of the chalk line therethrough.

6. The chalk line device of claim 5 , further comprising a line seal through which the chalk line passes prior to exiting the housing through the chalk line opening, wherein the line seal removes excess liquid chalk from exiting the housing through the chalk line opening.

7. The chalk line device of claim 1 , wherein the chalk line comprises a composition of cotton and nylon material, and wherein the chalk line is at least partially water absorbent.

8. The chalk line device of claim 7 , wherein the water within the liquid chalk composition penetrates more deeply into the chalk line than the powdered chalk particles.

9. The chalk line device of claim 1 , wherein the liquid chalk further comprises an anti-caking component.

10. The chalk line device of claim 9 , wherein the anti-caking component is configured to maintain a powdery consistency to the chalk upon the liquid chalk drying as an applied chalk line.

11. A liquid chalk composition comprising:
water or alcohol comprising 60% to 95% by volume;
powdered chalk particles comprising 5% to 40% by volume, wherein 90% of powdered chalk particles range in their maximum dimension from 10 microns to 200 microns; and
a stabilizing agent comprising 4% to 25% by volume.

12. The liquid chalk composition of claim 11 , wherein the water or alcohol comprises 70% to 85% by volume.

13. The liquid chalk composition of claim 11 , wherein the water or alcohol comprises 75% to 80% by volume.

14. The liquid chalk composition of claim 11 , wherein the powdered chalk particles comprise 15% to 30% by volume.

15. The liquid chalk composition of claim 11 , wherein the powdered chalk particles comprise 20% to 25% by volume.

16. The liquid chalk composition of claim 11 , wherein the stabilizing agent comprises 9% to 20% by volume.

17. The liquid chalk composition of claim 11 , wherein the stabilizing agent comprises 12% to 17% by volume.

18. The liquid chalk composition of claim 11 , further comprising talc.

19. The liquid chalk composition of claim 18 , wherein the talc comprises 10% to 20% by volume.

20. The liquid chalk composition of claim 11 , wherein the powdered chalk particles comprises 10% to 20% by volume, and further comprising talc comprising 10% to 20% by volume.

21. The liquid chalk composition of claim 11 , further comprising an anti-caking component.

22. The liquid chalk composition of claim 21 , wherein the anti-caking component is configured to maintain a powdery consistency to the chalk upon the liquid chalk drying as an applied chalk line.

Assignees

• Stanley Black & Decker Inc
• Stanley Black & Decker Inc

Inventors

• Chernyshou Aliaksei
• Thierfeld Charles L
• Matteo Michael T

Classifications

• B44D3/38 Primary

  Cord line chalkers · CPC title

• C09D13/00

  Pencil-leads; Crayon compositions; Chalk compositions · CPC title