F - Mech Eng,Light,Heat,Weapons – 16 – J
Patent
F - Mech Eng,Light,Heat,Weapons
16
J
85/10, 85/11
F16J 15/06 (2006.01) F16B 33/00 (2006.01) F16B 37/14 (2006.01)
Patent
CA 1142780
Nelson Case 3488 FASTENER HAVING A SEALING CHIP SKIRT Abstract of the Disclosure There is disclosed a threaded fastener having a seal means carried by the head thereof which is structured to assure the establishment of a complete and effective seal between the fastener and the work piece surface into which it is driven. The screw or fastener includes a head portion having a clamping under surface and a top surface contoured for interlocking engagement with a driver. A shank portion extends from the clamping surface and has a transverse dimension smaller than the head portion and a thread. A seal means or moisture im- pervious cover overlies the head portion and extends axially from the clamping surface for sealing the connection between the fastener and a work piece surface into which the fastener is driven. The axial extension of the impervious cover forms a flange which is inwardly deformable upon contacting the work piece surface for deflecting work piece fragments which may be produced as the fastener is driven into the work piece away from the seal between the flange and the work piece surface to preclude the fragments from interfering with the seal. The flange and the clamping surface further define a cavity for receiving the work. piece fragments as the flange is deformed for confining the fragments away from the sealed connection and for preventing the free displacement of the fragments.
360961
Illinois Tool Works Inc.
Meredith & Finlayson
LandOfFree
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