Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Frangible member
Patent
1989-10-16
1990-06-26
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Frangible member
411 70, 10 27R, 295252, F16B 1304, B21K 144, B23P 1902
Patent
active
049367250
ABSTRACT:
A blind fastener comprises a tubular sleeve, a mandrel stem and an integral shear ring and locking collar assembly. The integral shear ring and locking collar assembly has a wedge-shaped bulbing portion for expanding the blind side of the fastener sleeve in response to a pulling force on the stem, and a leading finger which functions as a locking collar. As the mandrel is pulled axially away from the sleeve, the leading finger portion radially expands the body of the fastener sleeve while the wedge-shaped portion axially compresses the tail end of the sleeve to form a blind head. After forming the blind head, the wedge-shaped bulbing portion shears. The leading finger continues travelling through the fastener sleeve, radially expanding the sleeve to fill the hole between the sleeve and the workpiece. When the leading finger meets with an anvil washer it buckles into a recess formed in the sleeve so as to interlock the sleeve and the mandrel stem.
REFERENCES:
patent: 2372222 (1945-03-01), Mullgardt
patent: 3148578 (1964-09-01), Gapp
patent: 3292482 (1966-12-01), Fry et al.
patent: 3302510 (1967-02-01), Gapp
patent: 3390601 (1968-07-01), Summerlin
patent: 3489056 (1970-01-01), Blakeley
patent: 3491649 (1970-01-01), Smouton et al.
patent: 4012984 (1977-03-01), Matuschek
patent: 4137817 (1979-02-01), Siebol
patent: 4143580 (1979-03-01), Luhm
patent: 4407619 (1983-10-01), Siebol
patent: 4765787 (1988-08-01), Briles
patent: 4810142 (1989-03-01), Briles
Textron Inc.
Wilson Neill R.
LandOfFree
Blind shear-ring fastener and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Blind shear-ring fastener and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Blind shear-ring fastener and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1122270