Roofing fastening device

A roof fastening device for fastening rubber roof sheets to the upper surface of a roof deck comprising:

• (a) a longitudinally extending shank member having a given diameter, said shank member being of general cylindrical configuration, said shank member having an upper end and a lower end, and further having an outer circumferential surface, said shank member having a plurality of lateral openings in the circumferential surface;
• (b) a head member integrally and concentrically affixed to the upper end of said cylindrical shaft member, said head member having a diameter larger than the shaft diameter of the shaft member;
• (c) double helix threaded members formed on the outer circumferential surface of said shank member, with the external threaded members having serrated portions on the external edge surface thereof;
• (d) chamber means with an internal spatial area, in said fastening device to receive a liquid sealer, said chamber means having an opening, to spatial areas outside fastening device in said outer circumferential surface of said shank member in said head member, and said chamber member communicating with said openings on said outer circumference of said shank member whereby there is spatial continuity between the internal spatial area of said chamber means and said lateral openings.

A roof fastening device for fastening rubber roof sheets to the upper surface of a roof deck comprising:

• (a) a longitudinally extending shank member having a given diameters, said shank member being of general cylindrical configuration, said shank member having an upper end and a lower end, and further having an outer circumferential surface with said shank member having a plurality of lateral openings on said circumferential surface, said openings communicating with spatial areas outside said shank member;
• (b) a head member integrally and concentrically affixed to the upper end of said cylindrical shaft member, said head member having a diameter larger than the shaft diameter of the shaft member;
• (c) double helix threaded members formed on the outer circumferential surface of said shank member, wherein said threaded members have serrations on the external edge surfaces thereof;
• (d) chamber means with an internal spatial area disposed in the shank member of said fastening device to receive a liquid sealer, said chamber means having an opening to spatial areas outside fastening device of said shank member with said opening being located in said head member, said chamber member communicating with said lateral openings on said outer circumference of said shank member whereby there is spatial continuity between the internal spatial area of said chamber means and said lateral openings.