Nail with spreadable legs

Details Nail with spreadable legs Nail with spreadable legs

1996-08-01

1997-12-23

Wilson, Neill R.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Having separate expander means

Relatively sliding wedge surfaces

411 79, 411358, F16B 1304, F16B 1500

Patent

active

057001197

ABSTRACT:
A nail with spreadable legs has legs that can be spread apart by a constant angle irrespective of the hardness of the ALC material into which the nail is driven. The nail has two leg members bound together by a washer with their flat sides abutting each other. One of the leg members has a protrusion on its respective flat surface near its tip. A projection and a recess are formed on the flat surfaces of the respective leg members. With the leg members bound by the washer, the projection engages in the recess near the washer. When the nail is driven in to a predetermined depth, the projection disengages from the recess, so that the legs begin to spread apart. It is thus possible to control the spread angle of the leg members.

REFERENCES:
patent: 4886406 (1989-12-01), Herb
patent: 4892450 (1990-01-01), Gerhard
patent: 5529424 (1996-06-01), Neubert et al.

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