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US 5,797,232 AGranted
Gripping plate for attaching roofing membrane
AssigneeIllinois Tool Works Inc.
InventorPaul M. Larson
Life of this patent
Estimating the term…
Abstract
A gripping element for attaching a roofing membrane to a roof includes a generally planar plate having a generally central opening and an oblong peripheral edge. The plate includes a top surface facing away from the roofing membrane, an upwardly projecting rib, and a plurality of gripping formations for preventing slippage of the roofing membrane relative to the plate. Preferably, the central opening is larger in diameter than the diameter of a corresponding shank portion of a threaded fastener so that the plate is permitted a specified amount of rocking when subjected to a membrane uplift force.
Claims22
A gripping element for attaching a roofing membrane to a roof, comprising:
- a substantially planar, rigid plate having an opening, defined within a substantially central portion of said substantially planar plate, for receiving a fastener for securing said gripping element to a roof, and a rigid, non-bendable peripheral region having an outermost peripheral edge portion;
- said rigid, non-bendable peripheral region having a plurality of gripping formations formed within said outermost peripheral edge portion thereof for engaging the roofing membrane and preventing slippage of the roofing membrane relative to said plate.
A gripping assembly for attaching a roofing membrane over an insulating material and onto a roof, comprising:
- a substantially planar, rigid plate having an oblong configuration and comprising a rigid, non-bendable peripheral region having an outermost peripheral edge portion which has a plurality of gripping formations formed thereon for engaging the roofing membrane and preventing slippage of the roofing membrane relative to said substantially planar, rigid plate, and further comprising a top surface, and a bottom surface, whereupon installation to the roof, said top surface is disposed away from the roofing membrane and the bottom surface is disposed toward the roofing membrane;
- said substantially planar, rigid plate further including a rib having an oblong configuration corresponding to that of said peripheral edge, said rib projecting upwardly from said top surface of said substantially planar, rigid plate, and said rib defining an inner base portion;
- and
- a fastening element, including a head portion and a shank portion having a predetermined diameter, for securing said substantially planar, rigid plate to the roof;
- said inner base portion of said substantially planar, rigid plate having an opening having a predetermined diameter for receiving said shank portion of said fastening element, wherein said predetermined diameter of said opening of said inner base portion of said substantially planar, rigid plate is greater than said predetermined diameter of said shank portion of said fastener so as to allow said substantially planar, rigid plate to rock within an optimal angular range with respect to the insulating material and the roof when a force is exerted upon said substantially planar, rigid plate by the roofing membrane.
2 more elements
A gripping element for attaching a roofing membrane to a roof, comprising:
- a substantially planar, rigid plate;
- an opening, defining an axis therethrough, defined within a substantially central portion of said substantially planar, rigid plate for receiving a fastener for securing said gripping element to a roof;
- and
- a rigid, non-bendable peripheral edge portion defined about said substantially planar, rigid plate and having a plurality of substantially radially outwardly extending gripping formations formed thereon for engaging the roofing membrane and preventing slippage of the roofing membrane relative to said substantially planar, rigid plate.
1 more element
A gripping element for attaching a roofing membrane to a roof, comprising:
- a substantially planar, rigid plate having a substantially oblong configuration comprising a pair of relatively long, oppositely disposed sides, and a pair of relatively short, oppositely disposed ends;
- an opening, defining an axis therethrough, defined within a substantially central portion of said substantially planar, rigid plate for receiving a fastener for securing said gripping element to a roof;
- a rigid, non-bendable peripheral region, having an outermost peripheral edge portion, defined upon said substantially planar, rigid plate so as to extend along said pair of relatively long, oppositely disposed sides and said pair of relatively short, oppositely disposed ends;
- and
- a plurality of gripping formations, formed upon said outermost peripheral edge portion and extending along said pair of relatively long, oppositely disposed sides of said substantially planar, rigid plate, for engaging the roofing membrane, preventing slippage of the roofing membrane relative to said substantially planar, rigid plate, and for distributing the stresses of the roofing membrane, when the roofing membrane experiences uplifting forces, over a relatively large area.
2 more elements
A gripping element for attaching a roofing membrane to a roof, comprising:
- a substantially planar, rigid plate;
- a rigid, non-bendable peripheral region, having an outermost peripheral edge portion, defined upon said substantially planar, rigid plate;
- a plurality of gripping formations formed upon said outermost peripheral edge portion of said substantially planar, rigid plate for engaging the roofing membrane and preventing slippage of the roofing membrane relative to said substantially planar, rigid plate;
- and
- an opening, defined within a substantially central portion of said substantially planar, rigid plate, for receiving a shank portion of a fastener for securing said gripping element to a roof,
- wherein said opening has a predetermined diameter which is greater than the diameter of the shank portion of the fastener so as to permit said substantially planar, rigid plate to rock within an optimal angular range with respect to the roof when a force is exerted upon said substantially planar, rigid plate by the roofing membrane.
3 more elements
Dependencies are inferred from the claim text.