초록 ▼

A two-piece fastener system for installing roofing insulation. The fastener system includes a round disk having a hub extending outwardly from the center of one side. The outwardly extending end of the hub includes an opening adapted to accommodate a threaded fastener or nail. A thermally insulating

A two-piece fastener system for installing roofing insulation. The fastener system includes a round disk having a hub extending outwardly from the center of one side. The outwardly extending end of the hub includes an opening adapted to accommodate a threaded fastener or nail. A thermally insulating plug is driven into the cavity through an opening at its opposite end to abut against a head of the fastener, preventing it from backing out. In one embodiment, the plug is retained by a lip that extends thereabove, and in a second embodiment, is retained by engagement of a ridge in a corresponding groove.

대표청구항 ▼

A fastener system comprising: a generally flat plate having an upper surface and a lower surface, a central hub portion extending downwardly from the lower surface thereof, the hub portion including a central elongate cavity having a first opening disposed at the downwardly extending end of the hub

A fastener system comprising: a generally flat plate having an upper surface and a lower surface, a central hub portion extending downwardly from the lower surface thereof, the hub portion including a central elongate cavity having a first opening disposed at the downwardly extending end of the hub portion distal from the lower surface, the first opening being adapted to accommodate a shank of a fastener driven therethrough, an opposite end of the cavity including a second opening disposed in the plate and larger than the first opening; an elongate solid plug having a projecting driving head allowing the plug to be forcibly driven into the cavity through the second opening, into abutment with the fastener, a shoulder on the plug being below the upper surface of the plate; and means comprising a resilient lip for retaining the plug in the cavity and sealingly engaging the driving head, preventing the fastener from backing out of the first opening.