Barrel assembly and composite stress plate

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Washer structure

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Details

411160, 411533, 81 5737, 52410, 227140, F16B 4300

Patent

active

053781023

ABSTRACT:
A composite stress plate for securing insulation to a roof deck with a fastener includes a metal plate having a drawn central cup with a concentric aperture and a plastic insert having a central throughbore for receiving the fastener in a threaded manner. The plastic insert may have a hub which corresponds in shape to and is adapted to snappingly engage the concentric aperture in the metal plate, or the insert may be received by the cup in the metal plate and retained therein. Means for preventing relative rotation between the plastic insert and the metal plate are provided in either case. A plurality of depressed ramps are disposed within the plate having cleats for engaging the insulation. The ramps enhance alignment of the composite stress plate on a barrel assembly of an installation tool and precise placement of the threaded fastener into the roof deck is achieved. The barrel assembly has a plate retaining member having an engagement face with a plurality of locator projections extending downwardly therefrom. The locator projections may include three metal studs for insertion into the ramps. The locator projections engage the plate at three contact points to hold the stress plate against rotation while the fastener is being threaded through the plastic insert and into the roof deck by the installation tool.

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"Olympic Fasteners" by Olympic Manufacturing Group, Inc.; (5 pages).

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