Patent · US Active

Fixing element

US8714896B2 · kind B2 · utility

1Cited by

13References

8Claims

0Family size

Assignee

fischerwerke GmbH & Co. KG · DE

Inventors

Hartmut Bohnet · Pfalzgrafenweiler, DE
Jochen Kaupp · Pfalzgrafenweiler, DE
Roland Unterweger · Pfalzgrafenweiler, DE
Mathias Haag · Haiterbach, DE

Key dates

Filing date	Jan 12, 2012
Grant date	May 6, 2014
Priority date	—
Expiry date	Jan 12, 2032

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16B13/0858
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

The invention relates to a fixing element (1) for anchoring in a drilled hole, having a shank portion (2) and an expansion element (3), there being arranged on the shank portion (2) an expander body (8) for expanding the expansion element (3). The expansion element (3) has a plurality of arcuate expansion lobes (11), each expansion lobe (11) being formed by two bridging portions (14) connected by a yoke (15). The bridging portions (14) of the expansion lobes (11) together generate an envelope surface (M) of the expansion element (3), which envelope surface (M) has rotational symmetry about the longitudinal axis (A) of the fixing element (1). In order to provide a fixing element (1) which can be used both in a wide and also in a narrow drilled hole, the invention proposes that the yoke (15) have an arcuate curvature (17) which projects beyond the envelope surface (M) in the radial direction (R).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.