Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Helical anchor
Patent
1985-05-14
1987-12-15
Wilson, Neill
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Helical anchor
411178, 411438, F16B 1304
Patent
active
047129557
ABSTRACT:
The present invention provides an expandable fastener assembly for use in materials which cannot be successfully fastened by conventional screw threads. The assembly includes an insert (20) constructed as a coil to expand uniformly along its convolutions and thereby exert a force upon the adjacent material (50). A fastener (30) has outer threads compatible with the inner threads of the insert (20) such that when a tightening or seating torque is applied to the fastener (30) it is transferred to the insert (20). The transferred force expands the insert (20) outwardly with respect to the fastener (30), without rotation of the insert (20) relative to rotation of the fastener (30). The invention is also provided with an anti-rotation feature to secure the fastener from rotational movement after installation.
REFERENCES:
patent: 806407 (1905-12-01), Farrington
patent: 806408 (1905-12-01), Farrington
patent: 906691 (1908-12-01), Chenoweth
patent: 1199624 (1916-09-01), Smith, Jr.
patent: 1396611 (1921-11-01), White
patent: 1407570 (1922-02-01), Peikce
patent: 2036604 (1936-04-01), Pickop
patent: 2093026 (1937-09-01), Bernhard
patent: 2346051 (1944-04-01), Seamark
patent: 2363789 (1944-11-01), Haas
patent: 2512316 (1950-06-01), Eckener
patent: 2581399 (1952-01-01), Forster
patent: 2688355 (1954-09-01), Forster
patent: 2777718 (1957-01-01), Vegren
patent: 3018684 (1962-01-01), Brancato
patent: 3272250 (1966-09-01), Hattan
patent: 3515027 (1970-06-01), Textrom
patent: 3910031 (1975-10-01), Keida
patent: 4040326 (1977-08-01), Breed
Reece Marvin P.
Rosan, Jr. Jose
Rexnord Inc.
Wilson Neill
LandOfFree
Expandable fastener assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Expandable fastener assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Expandable fastener assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1216865