US 2013/0280013 A1 · THERMAL BREAK FASTENER

Abstract

A thermal break fastener includes a head that has a top side and an underside. The head has diameter. A shank depends from the underside of the head and has an end that has a longitudinal bore therein, opposite the head. The shank is formed from a thermally non-transmissive material. The shank has a diameter less than the diameter of the head. A seal is positioned on the shank. A driving/boring element has a driving point and a self-counter-bore cutter spaced from the driving point. The self-counter-bore cutter has a diameter about equal to the diameter of the shank. The driving/boring element is mounted to the shank with the self-counter-bore cutter disposed at about the end of the shank opposite the head. A two-piece configuration includes a driving/boring element including a self-counter-bore cutter and a separate a sealing head with a seal positioned on the sealing head.

Claims20

Dependent claims

A thermal break fastener comprising:

a head having a top side and an underside, the head having diameter;
a shank depending from underside of the head, the shank having an end having a longitudinal bore therein opposite the head, the shank formed from a thermally non-transmissive material, the shank having a diameter less than the diameter of the head;
a seal positioned on the shank;
and
a driving/boring element, the driving boring element having a driving point and a self-counter-bore cutter spaced from the driving point, the self-counter-bore cutter having a diameter about equal to the diameter of the shank, the driving/boring element mounted to the shank with the self-counter-bore cutter disposed at about the end of the shank opposite the head.

2 more elements

Dependencies are inferred from the claim text.

Thermal break fastener

Life of this patent

Thermal break fastener

Life of this patent

Abstract

Claims20