F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
85/126
F16B 37/04 (2006.01) F16B 29/00 (2006.01) F16B 37/06 (2006.01)
Patent
CA 1222651
ABSTRACT An anchor nut fastener device is of the type comprising a tubular body portion (11) and an externally tapered nut portion (12) the narrow end of which adjoins one end of the body portion, whereby when the body portion is inserted in a suitable hole in a workpiece and the nut portion (12) is forced into the body portion (11), the externally tapered nut portion (12) both radially expands the body portion into engagement with the wall of the workpiece hole and also engages the nut portion in the body portion, thereby to provide an anchor nut in the workpiece. The externally tapered nut portion (12) comprises a first, relatively long, part (24) of a relatively shallow taper end and a second, relatively short, part (26) of relatively steep taper further away from the body portion than is the first part and extending radially outwardly of the first part. The end of the body portion (11) is enlarged to provide a head (10) with a countersink (14). The countersink provides a space into which the leading narrow end of the externally tapered nut portion can be enlarged when the nut portion (12) has been forced completely into the body portion (11). It is an advantage of this anchor nut fastener device that the diameter of the hole in the workpiece can be the same regardless of the workpiece thickness over a wide range with the size of the fastener being the same, whereas with prior fasteners the diameter of the hole in the workpiece requires to be related to the workpiece thickness.
433788
Avdel Limited
Ridout & Maybee Llp
LandOfFree
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