Electrostatically dissipative fuel system component

• US 5,164,879 A
• Filed: 07/01/1991
• Issued: 11/17/1992
• Est. Priority Date: 08/30/1990
• Status: Expired due to Term

• Current Assignee: Alliedsignal Inc.
• Original Assignee: Alliedsignal Inc.
• Inventors: Martin, James W., Pereira, James S., Kesavan, Sunil K., Danowski, Daniel R.
• Primary Examiner(s): Silverman, Stanley S.
• Assistant Examiner(s): McCarthy, Neil
• Application Number:
  US07/724,240
• Time in Patent Office: 505 Days
• Field of Search: 252/511, 252/518, 252/519, 428/36.4, 264/105, 210/748, 210/243, 361/212, 361/215
• US Class Current: 361/215
• CPC Class Codes: B01D 2201/0461 Springs
• CPC Class Codes: B01D 2201/50 Means for dissipating electrostatic charges
• CPC Class Codes: B01D 27/08 Construction of the casing
• CPC Class Codes: F02M 37/32 characterised by filters or filter arrangements

Abstract

A fuel system component for a motor vehicle constructed from a polymer material to which are added stainless steel fibers to render the component electrically conductive while retaining moldability. The electrically conductive component permits charges generated by the fuel passing through the component to be dissipated to the vehicle body, thereby preventing arcing which causes erosion of the component and subsequent leaks.

Claims

1. Fuel system component for communicating fuel to the engine of a motor vehicle, said motor vehicle having an electrical plane maintained at a predetermined electrical potential, said fuel system component being made of a composite material comprising a polymer having electrically conductive fibers distributed randomly throughout the material to provide an electrically conductive path through said component between the fuel communicated through said component and said electrical plane, so that at least a portion of the electrically conductive path extends through the component to thereby prevent the build-up of electrostatic charge in the fuel and the resultant arcing which causes the breakdown of the polymer material comprising the fuel system component.

2. Fuel system component as claimed in claim 1, wherein the fibers comprise at least 3% to 9% by weight of the composite material.

3. Fuel system component as claimed in claim 2, wherein the fibers are stainless steel fibers having a nominal length of about 4 mm to about 6 mm.

4. Fuel system component as claimed in claim 3, wherein the polymer material is nylon.