Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Including sleeve and distinct tapered expander
Patent
1991-05-06
1991-12-31
Lindsey, Rodney M.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Including sleeve and distinct tapered expander
411 44, 411 57, F16B 1306
Patent
active
050767461
ABSTRACT:
The fixing element for anchoring in a hole drilled in a concrete part includes a threaded bolt, an expansible body with an expander cone and an expansible sleeve having an internal bore. The expansible sleeve has longitudinal slots extending from its front end and the expansible body is joined to the threaded bolt for expansion in the drilled hole. To ensure that the fixing element can continue to at least partially hold after experiencing a sever excessive stress such as occurs during an earthquake, the internal bore (14) of the expansible sleeve (11) has a first cylindrical portion (14a) in its front end, which has a length corresponding approximately to the length of the expander cone (5) and the diameter of the first cylindrical portion (14a) corresponds to the smallest expander cone diameter. The internal bore (14) also has a second, conically widening portion (14b) connected to the first cylindrical portion and a third cylindrical portion (14c) which extends from and is connected to the second conically widening portion. The third cylindrical portion (14c) has a diameter which corresponds to the largest diameter of the second conically widening portion. The longitudinal slots (12) terminate in the conically widening portion (14b) of the internal bore (14).
Fischer Artur
Weber Wilfried
fischerwerke Artur Fischer GmbH & Co KG
Lindsey Rodney M.
Striker Michael J.
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