Tools – Bolt holders
Patent
1997-06-19
2000-01-11
Scherbel, David A.
Tools
Bolt holders
8117615, 29264, 29275, B25B 900
Patent
active
060123583
ABSTRACT:
A tool for setting self-cutting undercut anchors (6) in boreholes (B) in a receiving material (G) includes anchors (6) formed of an axially extending anchor rod (7) with a conically shaped surface at a leading end of the rod widening in the setting direction, and an axially extending rotatable sleeve (9) laterally enclosing the anchor rod and which is axially displaceable against the conically shaped surface for effecting radially outward spreading of cutting tabs located at the leading end of the sleeve. The cutting tabs form an undercut (U) in the inner surface of the borehole (B) as the sleeve is rotated. The tool has a rotatable propelling part (2) for the sleeve (9) of the undercut anchor (6) and a trailing end (3) of the propelling part is arranged for insertion into a chuck of a rotary hammer drill. The propelling part (2) cooperates with a support element (4) arranged to be supported by the surface of the receiving material (G) in which the borehole (B) is formed. The support element (4) has a receptacle (5) for the trailing end of the anchor rod in which the anchor rod can be axially fixed. The propelling part (2) can be displaced axially relative to the support element.
REFERENCES:
patent: 2377077 (1945-05-01), Gay et al.
patent: 2381597 (1945-08-01), Johnson
patent: 3050733 (1962-08-01), Bach
patent: 3489041 (1970-01-01), Hauenstein et al.
patent: 3822616 (1974-07-01), Phillips
patent: 4836062 (1989-06-01), LaTorre
Beck Hermann
Gassner Helmut
Hartmann Markus
Kossian Susanne
Kussmaul Rainer
Danganan Joni B.
Hilti Aktiengesellschaft
Scherbel David A.
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