초록 ▼

A washer for attaching insulation to a roof member over which roofing membrane is to be placed. The washer includes a laterally extending apertured flange and an upstanding hollow cylindrical protrusion adapted to snappingly engage the head of a fastener used with the washer. The protrusion has an i

A washer for attaching insulation to a roof member over which roofing membrane is to be placed. The washer includes a laterally extending apertured flange and an upstanding hollow cylindrical protrusion adapted to snappingly engage the head of a fastener used with the washer. The protrusion has an inwardly extending lip on the inside surface of the free end of the protrusion. A resilient rib is disposed between the protrusion and the apertured in the washer. The rib resiliently urges head of the fastener into engagement with the lip. The washer includes a downwardly extending hub, which may be equipped with means for retaining the washer in a batten strip.

대표청구항 ▼

A washer for use in attaching insulation to a roof member with a fastener having a head and an elongated shank, said washer comprising a generally flat flange having an aperture extending therethrough, said washer including an axially extending hub projecting from said flange; gripping means for rec

A washer for use in attaching insulation to a roof member with a fastener having a head and an elongated shank, said washer comprising a generally flat flange having an aperture extending therethrough, said washer including an axially extending hub projecting from said flange; gripping means for receiving and holding said head in a fixed position relative to said flange, said gripping means including a resilient generally cylindrical upstanding protrusion disposed around said aperture, said protrusion including a radially inwardly extending lip disposed on an upper inner portion of said protrusion, said protrusion being located on said washer so as to provide a space for radially outward deflection of said protrusion as said head snaps past said lip; said protrusion being disposed in a recess in an upper surface of said flange.