Expanding screw

Details Expanding screw Expanding screw

2011-05-10

2011-05-10

Saether, Flemming (Department: 3677)

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Having separate expander means

Including sleeve and distinct tapered expander

C411S080100, C411S412000

Reexamination Certificate

active

07938606

ABSTRACT:
An expanding screw for an expandable dowel sleeve (31) has a shaft (12) having a rotation-transmitting element (15) provided at its first end (13), at least one first screw thread (19) extending from its second end (17), and a thread section (21) provided in a region of the at least one first thread (19), spaced from the second end (17), and having at least one further screw thread (23).

REFERENCES:
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patent: 5749688 (1998-05-01), Wakai
patent: 6287044 (2001-09-01), Huber
patent: 6419435 (2002-07-01), Gaudron
patent: 6896460 (2005-05-01), Enomoto
patent: 6945729 (2005-09-01), Yasuda
patent: 2007/0160440 (2007-07-01), Langewiesche
patent: 21 32 755 (1971-01-01), None
patent: 30 62 677 (1981-10-01), None
patent: 30 43 478 (1982-07-01), None
patent: 34 29 585 (1986-02-01), None

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