Back to results
US 2010/0303553 A1Published application
Fastening element for use in mining and tunnel construction
OwnerMichael Selb, Richard Podesser +1inventors
InventorsMichael Selb, Richard Podesser, Arne Schibli
Life of this patent
Estimating the term…
Abstract
A fastening element for use in mining a tunnel construction, has a base body (12; 32; 42); and a plurality of weakenings (14, 15; 34, 35; 44, 45; 54) provided on an outer surface (13; 33; 43; 53) of the base body and a cross-section of which provides a break-off location and which are formed as a spiral extending along a longitudinal extent of the base body (12; 32; 42; 52).
Claims10
A fastening element for use in mining and tunnel construction, comprising a base body (12;
- 32;
- 42);
- and a plurality of weakenings (14, 15;
- 34, 35;
- 44, 45;
- 54) provided on an outer surface (13;
- 33;
- 43;
- 53) of the base body, each formed as a spiral extending along a longitudinal extent of the base body (12;
- 32;
- 42;
- 52), a cross-section of the weakenings defining a weakened cross-section of the base body, thereby providing a break-off location of the base body.
9 more elements
Dependencies are inferred from the claim text.