Patent ID: 6457910
Filing Date: 2002-10-01
Classification: E21D,Y10S

Abstract:
A tubular anchor, comprising a tubular member (1, 21) having a drilling head (2, 22) at one end thereof, load application means (3) extending along a portion of the tubular member opposite the one end thereof, and at least one outlet opening (5, 23) provided in a region of the drilling head; at least one, substantially cylindrical, hollow element (7, 24, 25) for receiving a mortar mass (4, 37, 38); and two pistons (8, 9, 31, 39, 32, 33), for closing the at least one mortar mass-receiving element (7, 24, 25) at opposite ends of the at least one mortar mass-receiving element (7, 24, 25) and displaceable along the tubular member (1), the at least one mortar-mass receiving element (7, 24, 25) having, at an end thereof facing in a setting direction (S), a piston-receiving region (6, 35) for receiving a respective one of the two pistons (8, 32) and having at least one through-opening (11, 34) spaced from a free end of the piston-receiving region (6, 35) by a distance (a, b) corresponding at least to a length (l) of the piston (8, 32) received therein and measured in a longitudinal direction of the tubular member.