초록 ▼

A holddown to be used in conjunction with a headed fastener, a roofing system and a method utilizing the same. The holddown comprises a disc-shaped spring and a body encasing the spring. The fastener is interpositionable within a hole in the body of the holddown and displacement of the fastener appl

A holddown to be used in conjunction with a headed fastener, a roofing system and a method utilizing the same. The holddown comprises a disc-shaped spring and a body encasing the spring. The fastener is interpositionable within a hole in the body of the holddown and displacement of the fastener applies a compressive force to the holddown. The spring is deformable from an unbiased position to a biased postion by the compressive force. The body is deformable from an unconstrained shape to a constrained shape by the deformation of the spring. The holddown is usable in conjunction with both the fastener and pliant filler to affix roofing material in a watertight relationship to a roof structure and to maintain the same in position against the forces applied by the wind.

대표청구항 ▼

A holddown to be used in conjunction with a headed fastener, said holddown comprising a circular spring having an aperture and upper and lower edges, said upper edge surrounding said aperture, a circular body encasing said spring, said body having an upper surface and a lower surface, said body havi

A holddown to be used in conjunction with a headed fastener, said holddown comprising a circular spring having an aperture and upper and lower edges, said upper edge surrounding said aperture, a circular body encasing said spring, said body having an upper surface and a lower surface, said body having a hole concentric with said aperture, said hole and aperture being of a size sufficient to permit the interpositioning of the shaft of a headed fastener therein with said head bearing upon said upppr surface adjacent to said upper edge of said spring, said spring being deformable from an unbiased position to a biased position by a compressive force applied at said upper edge in a direction from said upper edge toward said lower edge by said fastenr said body being deformable from an unconstrained shape to a constrained shape with said deformation of said unbiased position to said biased position, said spring having central and outer portions, said central portion adjoining said upper edge, said central portion having an annular shape concentric with said aperture, said spring outer portion being between said central portion and said lower edge, said outer portion also having an annular shape concentric with said aperture, said central portion being above said outer portion when said spring is in said unbiased position.