Single-Sided Sticky Gasket

• US 20130001894A1
• Filed: 06/15/2012
• Published: 01/03/2013
• Est. Priority Date: 06/17/2011
• Status: Active Grant

• Current Assignee: The Patent Well, LLC
• Original Assignee: Aviation Devices and Electronic Components LLC
• Inventors: Busby, Jeffrey D., Smith, Douglas J., Dry, Michael D., Boomer, Kent S., Schmidt, David R., Boyd, Matthew J.
• Granted Patent: US 9,769,965 B2
• Time in Patent Office: Days
• US Class Current: 277/653
• CPC Class Codes: H05K 9/0015 Gaskets or seals

Abstract

Applicants disclose a gasket for use between a removable workpiece and a base. The gasket has a polyurethane body, is generally tabular, and on one side has a fabric skin attached thereto. On the non-skinned side, the body, typically polyurethane, is sticky to the touch.

Claims

1. A gasket comprising:

a cured, sticky, elastomeric polyurethane body having a metallic skeleton, the body having an upper surface and a lower surface; and

an electrically conductive skin, configured to and substantially covering the upper surface of the body.

2. The gasket of claim 1, wherein the skin is an at least partly metallic fabric.

3. The gasket of claim 2, wherein the at least partly metallic fabric is woven.

4. The gasket of claim 1, wherein the skin is adapted to allow some seepage under compression of elastomer therethrough.

5. The gasket of claim 1, wherein the skin is an at least partly metallic fabric, under pressure;

and wherein the metallic fabric is woven.

6. gasket of claim 1, wherein the body is generally tabular.

7. The gasket of claim 1, wherein the skeleton is woven aluminum and the skin is a woven metalized fabric.

8. The gasket of claim 1, wherein the body is sticky to the touch and the hardness of the body is in the range of 75 to 150 (measured with a 37.5 gram half-cone penetrometer).

9. The gasket of claim 1, wherein the resistance of the fabric is less than about 0.002 ohms per unit square.

10. The gasket of claim 1, wherein the electrically conductive skin is partially porous to the elastomer when under compression and capable of maintaining electrical conduct when under compression.

11. The gasket of claim 1, wherein the electrically conductive skin has a non-metallic woven fabric substrate.

12. The gasket of claim 1, wherein the non-metallic woven fabric substrate is ripstop nylon.

13. The gasket of claim 1, wherein the body is between about 20 and about 60 mil thick and the skin is between about 3 and about 10 mil thick.

14. An assembly for use with an aircraft body, the assembly comprising:

a removable workpiece;

a static base;

a gasket for placement between the removable workpiece and the static base, the gasket comprising;

a cured, sticky, elastomeric polyurethane body having a metallic skeleton, the body having an upper surface and a lower surface; and

an electrically conductive skin, configured to and substantially covering the upper surface of the body; and

means for compressing the gasket between the removable workpiece and the static base.

15. The assembly in claim 14, wherein the removable workpiece is an aircraft antenna and the static base is the aircraft body fuselage.

16. The assembly in claim 14, wherein the gasket has a pre-compression thickness of between about 20 and about 60 mil and a post-compression thickness of between about 60 and 80% of its original thickness.

17. The assembly of claim 14, wherein the skin is an at least partly metallic fabric;

wherein the at least partly metallic fabric is woven;

wherein the skin is adapted to allow some seepage of elastomer therethrough; and

wherein the body is generally tabular.

18. The assembly of claim 14, wherein the removable workpiece is an aircraft antenna and the static base is the aircraft body fuselage;

wherein the gasket has a pre-compression thickness of between about 20 and about 60 mil and a post-compression thickness of between about 60 and 80% of its original thickness;

wherein the skin is an at least partly metallic fabric; and

wherein the at least partly metallic fabric is woven;

wherein the skin is adapted to allow some seepage of elastomer therethrough; and

wherein the body is generally tabular.