Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Externally threaded fastener element – e.g. – bolt – screw – etc. – Pilot end having means enhancing fastening or installation
Patent
1991-07-31
1993-10-12
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Externally threaded fastener element, e.g., bolt, screw, etc.
Pilot end having means enhancing fastening or installation
411411, 411426, 411908, F16B 2500, F16B 3504
Patent
active
052520161
ABSTRACT:
A fixing element for connecting materials of relatively low strength includes a unitary, one-piece plastic body. An external thread is formed on the plastic body for compressing and compacting the low strength material in the thread turns of the external thread. A first external thread portion has a taper at one end of the plastic body. A second portion has a taper at another end of the plastic body, while a third portion has no taper and extends between the first and second external portions. A penetration tip is connected to the smaller diameter end of the first external thread portion. Further, a stop collar is provided at the large diameter end of the second external thread portion. The penetration tip preferably is a self tapping screw made of a harder material than the plastic body. Further, the thread depth of the second external thread portion decreases along the second external portion as the second external portion approaches the larger diameter of the screw.
REFERENCES:
patent: 350209 (1886-10-01), Parmelee
patent: 354123 (1886-12-01), Flynn
patent: 367011 (1887-07-01), Rogers
patent: 633909 (1899-09-01), Sanford
patent: 1250597 (1917-12-01), Kyle
patent: 1270036 (1918-06-01), Leclaire
patent: 1365508 (1921-01-01), Kucewicz
patent: 1491203 (1924-04-01), Enoch
patent: 2086928 (1937-07-01), Tiryakian
patent: 3126185 (1964-03-01), Christman
patent: 3208328 (1965-09-01), Myers
patent: 3224721 (1965-12-01), Malmquist
patent: 3421187 (1969-01-01), Ryder
patent: 4756653 (1988-07-01), Berger
patent: 4776737 (1988-10-01), Wollar
Moore Richard L.
Schmid Paul M.
Isolink Inc.
Wilson Neill R.
LandOfFree
Fixing element for low strength materials does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fixing element for low strength materials, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fixing element for low strength materials will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1900338