Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Threaded fastener locked to a discreet structure – Design of fastener or substructure restricts rotation
Patent
1999-04-29
2000-12-12
Saether, Flemming
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Threaded fastener locked to a discreet structure
Design of fastener or substructure restricts rotation
411431, 411429, 29235, 294264, 294266, F16B 3706
Patent
active
061589357
ABSTRACT:
For removing a cap (2) made of a plastic material, which is disposed on a shank (9) of a metal stud, it is proposed that the cap has tool engagement regions (15a, 15b), through which a substantially tangentially directed deformation force (F) is introduced by means of jaws (20, 21) into the cap (2) so that at least one portion (14a, 14b, 14c), which extends at least over part of the axial length of the shank (9) and is formed between the tool engagement regions (15a, 15b), is plastically deformed in such a way that the cap (2) releases the shank (9) and the cap (2) may be pulled off in axial direction of the shank (9).
REFERENCES:
patent: 2688185 (1954-09-01), Brazil
patent: 3000097 (1961-09-01), Hartz
patent: 3273441 (1966-09-01), Biesecker
patent: 4472097 (1984-09-01), Kiefer
patent: 4799842 (1989-01-01), Kreider
patent: 4875817 (1989-10-01), Suzumura
Emhart Inc.
Murphy Edward D.
Saether Flemming
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