Title:
BLIND FASTENERS AND INSTALLATION METHODS AND APPARATUS
Document Type and Number:
WIPO Patent Application WO2003033918
Kind Code:
A3
Abstract:
A fastener includes a shank (20) with a head (22) on one end. In one form, the other end may include a counterbore (30), with the outer end of the counterbore (30) deflected inward (38) to form an inward taper (28) on the end of the shank, facilitating entry of the shank into a hole in work pieces. In another form, the other end of the shank may be formed with a chamfer. The fasteners also contain a stem (24) having a head (26) located adjacent the blind end of the shank. The stem head (26) is pulled to expand and tightly fasten the shank to the work pieces. The configurations allow for high strength material to be used for the shank.
Inventors:
LUHM RALPH
Application Number:
PCT/US2002/033301
Publication Date:
July 29, 2004
Filing Date:
October 18, 2002
Export Citation:
Assignee:
ALLFAST FASTENING SYSTEMS INC (US)
International Classes:
F16B5/04; F16B13/04; F16B19/10; F16B13/00; F16B15/08; F16B; (IPC1-7): F16B13/04
Foreign References:
| US5689873A | 1997-11-25 | |||
| US6029814A | 2000-02-29 | |||
| US5129253A | 1992-07-14 | |||
| US3038626A | 1962-06-12 | |||
| US3880042A | 1975-04-29 | |||
| US4137817A | 1979-02-06 | |||
| US4143580A | 1979-03-13 |
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