Expandable rock bolt with indicator of clamping
OwnerVladimir Chrobakinventor
Life of this patent
Estimating the term…
Abstract
An expandable rock bolt which is formed with a expansion body having a transversal cross section that has a deformed shape which defines at least one lengthwise groove having ends that include caps with a filling component on an inlet side and an end component on an outlet side. The expandable rock bolt is further equipped with at least one indicator of clamping which is formed with a hollow tube which is made of an elastically compressible material and which is placed on a wall of the expansion body along which the indicator is taken out on a visible side for staff whereas at least in a part of an internal cavity of the tube of the indicator is placed an indication medium.
Claims20
An expandable rock bolt, comprising:
- an expansion body having:
- a transverse cross section having a shape that defines at least one lengthwise groove;
- a first end and a second end that each comprise a cap;
- an inlet side comprising a filling component;
- an outlet side comprising an end component;
- and
- a clamping indicator that comprises a hollow tube comprising an elastically compressible material that is disposed at a wall of the expansion body, wherein an internal cavity of the hollow tube comprises an indication medium.
Dependencies are inferred from the claim text.