Carbon fiber composite level and method of manufacturing same

• US 9,625,260 B2
• Filed: 03/23/2015
• Issued: 04/18/2017
• Est. Priority Date: 04/16/2014
• Status: Active Grant

• Current Assignee: Stanley Black & Decker, Inc.
• Original Assignee: Stanley Black & Decker, Inc.
• Inventors: Komulainen, Johannes, Pelletier, Thomas, Chernyshou, Aliaksei, Woolley, Christopher, Honkanen, Juha
• Primary Examiner(s): Bennett, G. Bradley
• Application Number:
  US14/665,401
• Publication Number:
  US 20150300819A1
• Time in Patent Office: 757 Days
• Field of Search: 33379, 33381
• CPC Class Codes: G01C 25/00 Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass testing, calibrating or compensating compasses G01C17/38
• CPC Class Codes: G01C 9/26 Details
• CPC Class Codes: G01C 9/34 of the tubular type, i.e. for indicating the level in one direction only

Abstract

A composite level and a method to manufacture the composite level are provided. A composite level can have three layers of material. A first layer comprises a glass-mat material, a second layer comprises carbon fiber, and a third layer comprises a glass fabric material. A composite level can also have only two layers of material. At least one bubble vial is mounted on the level body. The method to manufacture the carbon fiber composite level comprises a pultrusion process wherein a fiber glass material and carbon fiber are saturated with resin and molded into a final shape.

Claims

1. A level comprising:

a level body comprising a layer of fiber glass material and a layer of carbon fiber material, the fiber glass material layer being positioned adjacent the carbon fiber material layer; and

at least one bubble vial mounted on the level body.

2. The level of claim 1, wherein the fiber glass material layer comprises a glass-mat material.

3. The level of claim 1, wherein the fiber glass material layer comprises a glass fabric material.

4. The level of claim 2, wherein the level body comprises a second fiber glass material layer comprising a glass fabric material.

5. The level of claim 4, wherein the carbon fiber material layer is disposed between the glass-mat material layer and the glass fabric material layer.

6. The level of claim 1, wherein the level body has a generally tubular configuration including a top wall and a bottom wall generally parallel to one another, and a pair of spaced side walls generally perpendicular to the top and bottom walls;

a top opening in the level body that interrupts at least a portion of the top wall to accommodate the at least one bubble vial; and

an internal support structure disposed within the tubular configuration of the body and spanning longitudinally along the body so as to be disposed on both sides of the top opening to provide structural support to the body in the vicinity of the top opening.

7. The level of claim 6, wherein the internal support structure comprises high impact ABS material.

8. The level of claim 6, wherein the at least one bubble vial is mounted on the internal support structure.

9. The level of claim 1, wherein the level body comprises between about 10% and about 90% by volume of the carbon fiber material layer.

10. The level of claim 1, wherein the level body comprises between about 12% and about 15% by volume of the carbon fiber material layer.

11. A method for manufacturing a level comprising:

forming a level body through a pultrusion process, wherein the level body comprises a layer of fiber glass material and a layer of carbon fiber material, the fiber glass material layer being positioned adjacent the carbon fiber material layer; and

mounting at least one bubble vial on the level body.

12. The method of claim 11, wherein the pultrusion process comprises saturating a fiber glass material and a carbon fiber material with a resin and pressing the fiber glass/resin material and carbon fiber/resin material into a shape for the level body.

13. The method of claim 11, wherein the fiber glass material layer comprises a glass-mat material.

14. The method of claim 11, wherein the fiber glass material layer comprises a glass fabric material.

15. The method of claim 13, wherein the level body comprises a second fiber glass material layer comprising a glass fabric material.

16. The method of claim 11, wherein the level body is formed into a generally tubular configuration including a top wall and a bottom wall generally parallel to one another, and a pair of spaced side walls generally perpendicular to the top and bottom walls.

17. The method of claim 16, further comprising cutting a top opening in the level body that interrupts at least a portion of the top wall to accommodate the at least one bubble vial.

18. The method of claim 17, further comprising providing an internal support structure disposed within the tubular configuration of the body and spanning longitudinally along the body so as to be disposed on both sides of the top opening to provide structural support to the body in the vicinity of the top opening.

19. The method of claim 11, wherein the level body comprises between about 10% and about 90% by volume of the carbon fiber material layer.

20. The method of claim 11, wherein the level body comprises between about 12% and about 15% by volume of the carbon fiber material layer.