E - Fixed Constructions – 04 – D
Patent
E - Fixed Constructions
04
D
E04D 13/00 (2006.01) B25B 21/00 (2006.01) E04D 3/36 (2006.01) E04D 5/14 (2006.01) E04D 15/00 (2006.01) F16B 39/24 (2006.01) E04D 15/04 (2006.01)
Patent
CA 2079126
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.
Robic
Sfs Stadler Inc.
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