Apparatus for attaching roofing membrane to a structure

• US 4,999,963 A
• Filed: 03/05/1990
• Issued: 03/19/1991
• Est. Priority Date: 05/22/1986
• Status: Expired due to Term

• Current Assignee: North American Roofing Systems, Inc.
• Original Assignee: North American Roofing Company Incorporated
• Inventors: Verble, Patrick R.
• Primary Examiner(s): Ridgill, Jr., James L.
• Application Number:
  US07/489,791
• Time in Patent Office: 379 Days
• Field of Search: 52/410, 52/512, 52/746, 24/462
• US Class Current: 52/410
• CPC Class Codes: E04D 5/143 in the field of the flexible material
• CPC Class Codes: E04D 5/145 Discrete fastening means, e.g. discs or clips
• CPC Class Codes: E04D 5/147 not perforating the flexible material

Abstract

A roof membrane anchoring system in accordance with the present invention includes an anchoring plate with a roof engaging surface and a top surface that can be attached to an existing structure. The anchoring plate has an axial opening therein into which a lip extends. An insert is inserted into the axial opening in the anchoring plate once a roofing membrane is inserted into the axial opening in the plate. The insert has a greatest diametrical dimension. The anchoring system is designed to assume a first state wherein the greatest diametrical dimension of the insert is slightly less than the inside diameter of the axial opening and slightly greater than the inside diameter of the lip extending into the axial opening and a second state wherein the greatest diametrical dimension of the insert is slightly less than the inside diameter of the lip which extends into the axial opening.

Claims

1. An anchoring system for securing a roof membrane to a structure, the anchoring system comprising

an anchoring plate formed to include a membrane-receiving chamber,

means for fastening the anchoring plate to the structure,

a cap configured to fit in the membrane-receiving chamber, the cap including an inner member positioned to trap a roof membrane disposed in the membrane-receiving chamber between the anchoring plate and the cap and an outer member, the inner member being formed to include at least one compression cut situated to lie in the membrane-receiving chamber of the anchoring plate upon placement of the cap therein and arranged to permit flexure of the inner member in a radially outward direction, the cap being formed to include a central aperture extending through the outer and inner members and having a plug-receiving opening in the outer member, and

a plug including means positioned in the central aperture for flexing the inner member in a radially outward direction toward the anchoring plate to establish a locked connection between the cap and the anchoring plate so that a roof membrane is retained in the membrane-receiving chamber without penetrating the roof membrane.

2. The anchoring system of claim 1, wherein the inner member is formed to include a plurality of elongated channels arranged to lie in circumferentially spaced relation about an interior wall defining the central aperture and configured to open into the central aperture.

3. The anchoring system of claim 1, wherein an axially inner portion of the central aperture is formed in the inner member, the inner member includes a circular interior wall defining a boundary of the axially inner portion, and each compression cut is an elongated channel formed in the inner member to have an axially extending opening in the circular interior wall so that each channel opens into the axially inner portion of the central aperture.

4. An anchoring system for securing a roof membrane to a structure, the anchoring system comprising

an anchoring plate formed to include a chamber,

means for fastening the anchoring plate to the structure,

a cap having an inner end positioned in the chamber to engage a roof membrane inserted therein and an outer end, the cap being formed to include a first interior wall defining a central aperture extending in an axial direction through the inner and outer ends and having a first diameter, a second interior wall defining an upwardly opening cylindrical cavity having a second diameter greater than the first diameter, and an axially outwardly facing annular lip extending in a radial direction between the first and second interior walls, and

a plug including a body member configured to fit in the central aperture and flange means situated in the upwardly opening cylindrical cavity for engaging the axially outwardly facing annular lip to position the body member in close-fitting engagement with the inner end of the cap to urge the inner end of the cap in a radially outward direction toward the anchoring plate so that a roof membrane disposed in the chamber is trapped therebetween without penetrating the roof membrane.

5. The anchoring system of claim 4, wherein the cap is formed to include a plurality of elongated channels and each channel has a side opening formed in the first interior wall and a top opening formed in the axially outwardly facing annular lip.

6. The anchoring system of claim 4, wherein the first interior wall of the cap is formed to include interruptions therein.

7. The anchoring system of claim 4, wherein the cap is formed to include a plurality of compression cuts extending in an axial direction longitudinally through the inner member.

8. An anchoring system for securing a roof membrane to a structure, the anchoring system comprising

an anchoring plate formed to include a cap-receiving chamber,

means for fastening the anchoring plate to the structure,

a cap including a first interior wall defining an outer aperture having a first diameter, a second interior wall defining an inner aperture having a second diameter less than the first diameter, and a necked-down frustoconical wall defining a passageway lying between the outer and inner apertures and cooperating to provide a plug-receiving cavity in the cap, and

a plug situated in the plug-receiving chamber, the plug including means for urging the cap toward the anchoring plate to establish a locked connection therebetween so that a roof membrane disposed in the cap-receiving chamber between the cap and the anchoring plate is retained securely therein without penetrating the roof membrane.

9. The anchoring system of claim 8, wherein the cap is formed to include a plurality of compression cuts extending longitudinally through the first interior wall and the necked-down frustoconical wall.

10. The anchoring system of claim 8, wherein the first interior wall of the cap is formed to include interruptions therein.