Rugged low light reflectivity electrical contact

• US 8,141,288 B2
• Filed: 06/01/2010
• Issued: 03/27/2012
• Est. Priority Date: 01/16/2009
• Status: Active Grant

• Current Assignee: T-Worx Holdings, LLC
• Original Assignee: Prototype Productions Incorporated (Prototype Productions)
• Inventors: Dodd, James S., Tilton, Jay, Feldman, Ben
• Primary Examiner(s): Clement, Michelle
• Application Number:
  US12/791,460
• Publication Number:
  US 20100279544A1
• Time in Patent Office: 665 Days
• Field of Search: 42/84, 42/72, 421/24
• US Class Current: 42/84
• CPC Class Codes: F41C 23/22 Stocks having space for the storage of objects
• CPC Class Codes: F41C 27/00 Accessories; Details or attachments not otherwise provided for
• CPC Class Codes: F41G 11/003 Mountings with a dove tail element, e.g. "Picatinny rail systems"

Abstract

The Low Reflectivity Contact has a low coefficient of light reflection, is rugged with respect to harsh ambient environmental conditions, provides a low resistance electrical connection, and is adapted for use in quick-connect applications. Light reflectivity of the contact is minimized by the use of a conductive mesh that is used to implement the electrical contact. The weave density and wire diameter of the conductive mesh maximizes the attenuation of reflected light in the visible spectrum, yet maintains high electrical conductivity and a lack of sensitivity to contamination via the choice of materials used to implement the Low Reflectivity Contact.

Claims

1. A Low Reflectivity Contact that provides minimal reflection of incident visible light, for use with a handguard which mechanically supports one or more power-consuming accessories, which are powered by a power source for providing a supply of electrical power for use by said one or more power-consuming accessories, comprising:

a powered rail, attached to a handguard and electrically interconnected with a power source, for providing a source of electrical power to one or more power-consuming accessories attached to said handguard; and

wherein said powered rail comprises an insulative backplane which has formed thereon at least one Low Reflectivity Contact for presenting a point of connection to said power source for said one or more power-consuming accessories, said Low Reflectivity Contact comprising;

a mesh grid attached to said backplane and electrically connected to said power source for contacting a corresponding conductive element on said at least one power-consuming accessory for enabling conduction of at least one of power and electrical signals therebetween

a conductive pad attached to said backplane and electrically connected to said power source, and

wherein said mesh grid is overlaid over said conductive pad and constructed of a conductive material containing a plurality of apertures formed in the surface thereof for electrically contacting said conductive element on said power-consuming accessory and which enables incident light to pass through said planar surface substantially absent reflection off said conductive surface and back out through said apertures.

2. The Low Reflectivity Contact of claim 1 wherein said mesh grid comprises:

a planar surface, constructed of a conductive material and containing a plurality of apertures formed in the surface thereof.

3. The Low Reflectivity Contact of claim 1 wherein said mesh grid comprises:

a matrix of electrical wires interconnected to form a planar surface, said matrix containing a plurality of apertures formed in the surface thereof.

4. The Low Reflectivity Contact of claim 3 wherein said matrix of electrical wires comprise a plurality of wires of diameter and surface reflectivity characteristics to minimize reflection of incident visible light.

5. The Low Reflectivity Contact of claim 1 wherein said powered rail is connected to said handguard in a manner to expose said at least one Low Reflectivity Contact to said at least one power-consuming accessory via one or more apertures formed in said handguard.

6. The Low Reflectivity Contact of claim 1 wherein said powered rail is connected to said handguard to provide simultaneous mechanical attachment of said power-consuming accessory to said handguard and electrical connection of said power-consuming accessory to said powered rail.

7. The Low Reflectivity Contact of claim 1 wherein said powered rail further comprises:

power switch, juxtaposed to and associated with at least one Low Reflectivity Contact formed on said powered rail, activated by attachment of a power-consuming accessory to said handguard and said associated Low Reflectivity Contact for electrically interconnecting said associated Low Reflectivity Contact with said power source.

8. The Low Reflectivity Contact of claim 7 wherein said power switch comprises:

a pair of electrical contacts configured in a normally open circuit configuration, with one of said pair of electrical contacts being electrically connected to said power sources and another of said pair of electrical contacts being electrically connected to said Low Reflectivity Contact; and

a depressable outer surface for enclosing said pair of electrical contacts and responsive to contact with a projection formed on an outer surface of said power-consuming accessory for displacing one of said pair of electrical contacts to electrically interconnect with another of said pair of electrical contacts.

9. The Low Reflectivity Contact of claim 1 wherein said handguard is a multifaceted structure, and one of a plurality of said powered rails is mounted in each of said facets of said handguard.

10. The Low Reflectivity Contact of claim 1 wherein said powered rail is mounted on said handguard, substantially coextensive along a length dimension of said handguard, said backplane comprises:

a plurality of Low Reflectivity Contacts formed on an exposed surface thereof in a spaced apart manner along said length dimension.

11. The Low Reflectivity Contact of claim 10 wherein said powered rail further comprises:

a plurality of power switches, each juxtaposed to and associated with a corresponding one of said plurality of Low Reflectivity Contacts formed on said powered rail, activated by attachment of a power-consuming accessory to said handguard and said associated Low Reflectivity Contact for electrically interconnecting said associated Low Reflectivity Contact with said power source.

12. The Low Reflectivity Contact of claim 1 wherein said powered rail is mounted on said handguard, substantially coextensive along a length dimension of said handguard, said backplane comprises:

a plurality of pairs of Low Reflectivity Contacts formed on an exposed surface thereof in a spaced apart manner along said length dimension, each one of said pair of Low Reflectively Contacts being connected to one of two electrical terminals of said power source.

13. The Low Reflectivity Contact of claim 12 wherein said powered rail further comprises:

a plurality of power switches, each juxtaposed to and associated with a corresponding one of said pairs of Low Reflectivity Contacts formed on said powered rail, activated by attachment of a power-consuming accessory to said handguard and said associated Low Reflectivity Contact for electrically interconnecting at least one of said associated pair of Low Reflectivity Contact with said power source.

14. A Low Reflectivity Contact for providing a supply of electrical power for use by one or more power-consuming accessories which are powered by a power source, comprising:

an insulative backplane which has formed thereon at least one Low Reflectivity Contact for presenting a point of connection to a power source for one or more power-consuming accessories, said Low Reflectivity Contact comprising;

a mesh grid, attached to said backplane and electrically connected to said power source for contacting a corresponding conductive element on said at least one power-consuming accessory for enabling conduction of at least one of power and electrical signals therebetween, constructed of a conductive material and containing a plurality of apertures formed in the surface thereof, which electrically contacts said conductive element on said power-consuming accessory and which enables a portion of incident light to pass through said apertures in said planar surface substantially absent reflection off said backplane and back out through said apertures,

a conductive pad attached to said backplane and electrically connected to said power source, and

wherein said mesh grid is overlaid over said conductive pad and constructed of a conductive material containing a plurality of apertures formed in the surface thereof for electrically contacting said conductive element on said power-consuming accessory and which enables incident light to pass through said planar surface substantially absent reflection off said conductive surface and back out through said apertures.

15. The Low Reflectivity Contact of claim 14 wherein said mesh grid comprises:

a matrix of electrical wires interconnected to form a planar surface, said matrix containing a plurality of apertures formed in the surface thereof.

16. The Low Reflectivity Contact of claim 15 wherein said matrix of electrical wires comprise a plurality of wires of diameter and surface reflectivity characteristics to minimize reflection of incident visible light.

17. The Low Reflectivity Contact of claim 14 wherein said mesh grid comprises:

a planar surface, constructed of a conductive material and containing a plurality of apertures formed in the surface thereof.