Seam plate for retaining roof decking membrane
First Claim
1. A seam plate for securing a membrane sheet to an underlying substructure, comprising:
- a circular plate;
an aperture defined within a central portion of said circular plate for receiving a fastener for securing said circular plate to an underlying substructure; and
a plurality of projections extending downwardly from said circular plate for engaging a membrane sheet so as to effectively secure the membrane sheet to the underlying substructure when said circular plate is fixedly secured to the underlying substructure by the fastener, each one of said plurality of downwardly extending projections having a rounded engagement portion for engaging the membrane sheet so as to effectively secure the membrane sheet to the underlying substructure without piercing the membrane sheet so as not to cause tearing and rupture of the membrane sheet.
8 Assignments
0 Petitions
Accused Products
Abstract
A stress plate or seam plate for use in connection with securing membrane sheets to underlying roofing decking substructure comprises a circular disk having a central aperture for receiving a screw fastener. A plurality of concentric ribs are defined between the central aperture and the peripheral edge of the plate for providing reinforcing and bending or flexibility characteristics to the stress plate or seam plate, and in accordance with the principles and teachings of the present invention, a plurality of circumferentially spaced, downwardly extending projections having substantially V-shaped cross-sectional configurations are provided upon the underside of the seam or stress plate so as to engage the membrane sheets and retain the same at their desired locations upon the underlying roofing deck substructural assembly. Contrary to conventional stress plates having sharp-pointed prongs or tangs, the projections of the present invention have substantially rounded or radiused apices so as not to puncture or rupture the membrane sheets.
5 Citations
26 Claims
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1. A seam plate for securing a membrane sheet to an underlying substructure, comprising:
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a circular plate;
an aperture defined within a central portion of said circular plate for receiving a fastener for securing said circular plate to an underlying substructure; and
a plurality of projections extending downwardly from said circular plate for engaging a membrane sheet so as to effectively secure the membrane sheet to the underlying substructure when said circular plate is fixedly secured to the underlying substructure by the fastener, each one of said plurality of downwardly extending projections having a rounded engagement portion for engaging the membrane sheet so as to effectively secure the membrane sheet to the underlying substructure without piercing the membrane sheet so as not to cause tearing and rupture of the membrane sheet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A seam plate for securing a membrane sheet to an underlying roofing decking substructure, comprising:
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a circular plate;
an aperture defined within a central portion of said circular plate for receiving a fastener for securing said circular plate to an underlying roofing decking substructure; and
a plurality of projections extending downwardly from said circular plate for engaging a membrane sheet so as to effectively secure the membrane sheet to the underlying roofing decking substructure when said circular plate is fixedly secured to the underlying roofing decking substructure by the fastener, each one of said plurality of downwardly extending projections having a rounded engagement portion for engaging the membrane sheet so as to effectively secure the membrane sheet to the underlying roofing decking substructure without piercing the membrane sheet so as not to cause tearing and rupture of the membrane sheet under wind uplift conditions. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. In combination, a roofing decking substructure assembly, comprising:
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a roofing decking substructure;
a first membrane sheet having a first end portion which is adapted to be secured atop said roofing decking substructure;
a second membrane sheet having a second end portion which is adapted to be overlapped and secured to said first end portion of said first membrane sheet so as to form a seamed connection with said first membrane sheet;
a seam plate for securing said first end portion of said first membrane to said roofing decking substructure; and
a fastener for securing said seam plate to said roofing decking substructure;
said seam plate comprising a circular plate;
an aperture defined within a central portion of said circular plate for receiving said fastener for securing said circular plate to said roofing decking substructure; and
a plurality of projections extending downwardly from said circular plate for engaging said first end portion of said first membrane sheet so as to effectively secure said first membrane sheet to said roofing decking substructure when said circular plate is fixedly secured to said roofing decking substructure by said fastener, each one of said plurality of downwardly extending projections having a rounded engagement portion for engaging said first end portion of said first membrane sheet so as to effectively secure said first end portion of said first membrane sheet to said roofing decking substructure without piercing said first end portion of said first membrane sheet so as not to cause tearing and rupture of said first membrane sheet under wind uplift conditions. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26)
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Specification