Faucet component with coating

Patent metadata

Field	Value
Publication number	US-9909677-B2
Application number	US-201615185968-A
Country	US
Kind code	B2
Filing date	Jun 17, 2016
Priority date	Dec 18, 2002
Publication date	Mar 6, 2018
Grant date	Mar 6, 2018

Abstract

A component for a faucet includes a substrate including alumina and a first material provided over at least a portion of the substrate. The first material includes titanium and carbon. The component also includes a second material provided over the first material, the second material including carbon and having carbon sp3 bonding of at least 40 percent.

First claim

What is claimed is:

1. A component for a fluid control valve comprising:
a valve disk comprising a substrate, a titanium carbide material provided on a surface of the substrate, and a carbon layer on the titanium carbide material, the carbon layer comprising at least 40 percent tetrahedrally-bonded carbon.

2. The component of claim 1 , wherein the carbon layer has a thickness of at least about 100 nanometers.

3. The component of claim 1 , wherein the carbon layer has a coefficient of friction lower than that of diamond-like carbon.

4. The component of claim 1 , wherein the carbon layer further comprises a nitrogen dopant.

5. The component of claim 1 , wherein the carbon layer has a hardness of at least 40 gigapascals.

6. The component of claim 1 , wherein the carbon layer has an elastic modulus of at least 400 gigapascals.

7. The component of claim 1 , wherein the carbon layer has a higher hardness than the substrate.

8. The component of claim 1 , wherein the carbon layer has a higher hardness than diamond-like carbon.

9. The component of claim 1 , wherein the valve disk is configured to engage another valve disk to provide a fluid-tight seal.

10. A fluid control valve comprising:
a first disk in contact with a second disk, a surface of the first disk configured to slide against a surface of the second disk;
a coating provided on the surface of the first disk, the coating comprising a first layer of material comprising titanium and a second layer of material provided over the first layer of material, the second layer of material being amorphous and comprising at least 40 percent tetrahedrally-bonded carbon.

11. The fluid control valve of claim 10 , wherein the second material further comprises nitrogen.

12. The fluid control valve of claim 10 , wherein the coating has a thickness greater than 100 nanometers.

13. The fluid control valve of claim 10 , wherein the second material has a hardness of at least about 40 gigapascals.

14. The fluid control valve of claim 10 , wherein the second material has an elastic modulus of at least about 400 gigapascals.

15. The fluid control valve of claim 10 , wherein at least one of the first disk and the second disk includes an inlet for fluid.

16. The fluid control valve of claim 10 , wherein the first disk includes a first inlet for hot water and a second inlet for cold water.

Assignees

• Delta Faucet Co

Inventors

• Brondum Klaus
• Welty Richard P
• Jonte Patrick B
• Richmond Douglas S

Classifications

• Y10T137/86823

  Rotary valve · CPC title

• Y10T137/86549

  Selective reciprocation or rotation · CPC title

• E03C1/02

  Plumbing installations for fresh water · CPC title

• F16K25/005 Primary

  Particular materials for seats or closure elements · CPC title

• Y10T137/87579

  Faucet attachment · CPC title