Attachable elastomeric pad

Patent metadata

Field	Value
Publication number	US-9156237-B2
Application number	US-201213350325-A
Country	US
Kind code	B2
Filing date	Jan 13, 2012
Priority date	Jan 13, 2012
Publication date	Oct 13, 2015
Grant date	Oct 13, 2015

Abstract

According to one embodiment, a method comprises calendering an elastomeric material into an elastomeric layer having a thickness that is more uniform than the elastomeric material prior to the calendaring. After calendaring, the elastomeric layer is vulcanized to a composite shim comprising at least one reinforcement layer and at least one layer of adhesive.

First claim

What is claimed is:

1. A method for attaching elastomeric material to two sides of a composite part, the composite part comprised of a matrix and at least one layer of woven fiberglass, the method comprising:
calendering a first elastomeric material into a first elastomeric layer having a thickness that is more uniform than the first elastomeric material prior to the calendering;
vulcanizing the first elastomeric layer to a first composite shim comprising three layers of woven fiberglass and four layers of adhesive, wherein the first composite shim is less than 0.0025 inches thick after the vulcanizing;
bonding the first composite shim to a first side of the composite part using at least one of the four layers of adhesive of the first composite shim, wherein the first composite shim has a higher elastic limit than the composite part and at least one of the four layers of adhesive of the first composite shim is on a side of the first composite shim opposed to the first elastomeric layer;
calendering a second elastomeric material into a second elastomeric layer having a thickness that is more uniform than the second elastomeric material prior to the calendering;
vulcanizing the second elastomeric layer to a second composite shim comprising three layers of woven fiberglass and four layers of adhesive, wherein the second composite shim is less than 0.0025 inches thick after the vulcanizing; and
bonding the second composite shim to a second side of the composite part opposite the first side using at least one of the four layers of adhesive of the second composite shim, wherein the second composite shim has a higher elastic limit than the composite part and at least one of the four layers of adhesive of the second composite shim is on a side of the second composite shim opposed to the second elastomeric layer.

2. A method comprising:
calendering an elastomeric material into an elastomeric layer having a thickness that is more uniform than the elastomeric material prior to the calendering;
vulcanizing the elastomeric layer to a composite shim comprising at least one reinforcement layer in a matrix and at least one layer of adhesive, wherein the at least one layer of adhesive of the composite shim is on a side of the composite shim opposed to the elastomeric layer; and
bonding the composite shim to a composite part;
wherein the composite part comprises a second matrix and at least one layer of woven fiberglass and the composite shim has a higher elastic limit than the composite part.

3. The method of claim 2 , wherein the composite shim comprises three layers of woven fiberglass and four layers of adhesive.

4. The method of claim 2 , wherein the composite shim is less than 0.0025 inches thick after the vulcanizing.

5. The method of claim 2 , wherein the composite shim is 0.0014-0.0016 inches thick after the vulcanizing.

6. The method of claim 2 , wherein vulcanizing the elastomeric layer to the composite shim cures the elastomeric layer.

7. The method of claim 2 , wherein the composite shim comprises fiberglass.

8. The method of claim 2 , wherein vulcanizing the elastomeric layer to the composite shim cures the composite shim.

9. The method of claim 2 , wherein the composite shim comprises woven fiberglass.

10. The method of claim 2 , wherein bonding the composite shim to the part comprises heating the composite shim at a temperature of 250 degrees Fahrenheit or less.

11. The method of claim 2 , wherein bonding the composite shim to the part comprises heating the composite shim at a temperature of 200 degrees Fahrenheit or less.

Assignees

• Sottiaux Daniel P
• Stamps Frank B
• Tisdale Patrick R
• Thompson Terry K
• Vo Loan Thanh
• Bell Helicopter Textron Inc

Inventors

• Sottiaux Daniel P
• Stamps Frank B
• Tisdale Patrick R
• Thompson Terry K
• Vo Loan Thanh

Classifications

• C09J2400/143

  in the substrate · CPC title

• B32B7/12

  using interposed adhesives or interposed materials with bonding properties · CPC title

• B32B2317/22

  Natural rubber · CPC title

• B29C66/91411

  of the parts to be joined, e.g. the joining process taking the temperature of the parts to be joined into account · CPC title

• B29C66/73755

  the to-be-joined area of at least one of the parts to be joined being fully cured, i.e. fully cross-linked, fully vulcanized · CPC title