초록 ▼

A plastic plate is provided for use with a fastener to secure insulation to a metal roof deck. The plate has a planar portion having a centrally disposed tapered hub portion. The central opening and preferably a clear through hole extends in the plate in the area of the hub. The bottom of the plate

A plastic plate is provided for use with a fastener to secure insulation to a metal roof deck. The plate has a planar portion having a centrally disposed tapered hub portion. The central opening and preferably a clear through hole extends in the plate in the area of the hub. The bottom of the plate includes anti-rotational means for engagement with the insulation during driving of the fastener. The anti-rotational means may be associated with the bottom of the planar portion, the hub or both. The fastener may include two separate and spaced apart threaded portions so that as the fastener first engages the metal deck, the unthreaded portion is within the previously tapped hub portion.

대표청구항 ▼

A plastic plate suitable for use with a fastener to secure insulation to a metal roof deck, said plate comprising: A. a substantially planar portion having top and bottom surfaces; B. a hub portion for receiving said fastener in force-fit relationship and depending from said bottom surface of said p

A plastic plate suitable for use with a fastener to secure insulation to a metal roof deck, said plate comprising: A. a substantially planar portion having top and bottom surfaces; B. a hub portion for receiving said fastener in force-fit relationship and depending from said bottom surface of said planar portion in a central part thereof and shaped to penetrate into said insulation and permit surface contact with the insulation about said hub and bottom surface; C. an opening in at least the upper surface of said planar portion coaxial with the hub portion for aligning said fastener as it is being driven through said hub portion in force-fit relationship; and D. anti-rotational means depending from said bottom surface for engagement with said insulation during driving of said fastener.