Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Impact driven fastener – e.g. – nail – spike – tack – etc. – Separately attached head
Patent
1991-12-20
1992-12-15
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Impact driven fastener, e.g., nail, spike, tack, etc.
Separately attached head
411531, 411533, 411923, 52410, 52512, F16B 1502, F16B 4300, E04B 500
Patent
active
051711184
ABSTRACT:
A member (1) secured in place by a fastening element (5) attaches insulation panels (2) to a structural component (A). The fastening element (5) is driven into the structural component (A) by a setting tool (8). To prevent damage to sector-shaped parts (6) extending radially inwardly in the entrance to a passageway (4b) through the attachment member (1), a diametrically increased section (4d) of the passageway extends axially inwardly from the entrance. The diametrically increased section (4d) has a diameter increased by twice the thickness of the sector-shaped parts (6) compared to the adjacent inward diameter of the passageway, and an axial length at least equal to the free length of one of the sector-shaped parts (6). When the muzzle end (8a) of the setting tool (8) is inserted into the passageway (4b), the sector-shaped parts (6) are bent inwardly within the diametrically increased section (6d) of the passageway (4b) and, in combination with the passageway serve as a guide surface for the setting tool. The sector-shaped parts (6) rebound when the setting tool (8) is removed from the passageway. When a coat of plaster (9) is applied over the insulation panels and the attachment members, the plaster penetrates behind the sector-shaped parts (6) and effects a back-gripping action.
REFERENCES:
patent: 4380413 (1983-04-01), Dewey
patent: 4757661 (1988-07-01), Hasan
patent: 4884932 (1989-12-01), Meyer
patent: 5054983 (1991-10-01), Froewis et al.
patent: 5082412 (1992-01-01), Thomas
Hilti Aktiengesellschaft
Wilson Neill R.
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