Claims
- 1. An anchor member to be fixed in a borehole by a permanently hardenable mass comprising an axially elongated sleeve-like member having a first end and a second end and a generally cylindrically shaped inside surface and outside surface, said outside surface has at least two recessed areas extending in the circumferential and axial direction and said recessed areas being spaced apart in the axial direction of said sleeve-like member by said cylindrically shaped outside surface, wherein the improvement comprises that each of said recessed areas is deformed inwardly from the generally cylindrically shaped outside surface and has a plurality of planar base surfaces extending chordally of the axis of said sleeve-like member and arranged in series one following the other in the circumferential direction with adjacent said planar base surfaces in the circumferential direction extending angularly relative to one another, said deformed recessed areas inwardly of said planar base surfaces have inner planar surfaces in the inside surface in said sleeve-like member deformed inwardly from said generally cylindrically shaped inside surface with the inner planar surfaces at said recessed areas forming at least two multi-planar sided cross-sections in the axially extending region of the recessed areas spaced axially apart by said cylindrically shaped inside surface and with each of the inner planar surfaces of said cross-sections extending generally parallel with a corresponding one of said planar base surfaces, in the axially extending region of said deformed recessed areas the inside said cross-sections of said sleeve-like member have a generally rectangular cross-section extending transversely of the axial direction of said sleeve-like member, the first end of said sleeve member is the leading end which is inserted first in to a borehole and the second end is the trailing end, the maximum depth of the deformed recessed areas inwardly from the generally cylindrically shaped outside surface of said sleeve-like member decreases in the axial direction from the first end to the second end of said sleeve-like member, and said sleeve-like member is closed at the first end thereof and is imperforate between the first and second ends for preventing the flow of the hardenable mass inside said member.
- 2. An anchor member, as set forth in claim 1 wherein has a thread formed in the inside surface therein adjacent the second end thereof.
- 3. An anchor member, as set forth in claim 1 wherein the axial length of the deformed recessed areas is in the range of approximately 0.2 to 0.5 times the outside diameter of the generally cylindrically shaped outside surface of said sleeve-like member.
- 4. An anchor member, as set forth in claim 3, wherein the axial spacing between said deformed recessed areas is in the range of 0.3 to 0.5 times the outside diameter of the generally cylindrically shaped outside surface of said sleeve-like member.
- 5. An anchor member, as set forth in claim 1 wherein said sleeve-like member has an annular radially inwardly deformed section extending from the second end thereof toward the adjacent deformed recessed area and the inside surface of said annular radially inwardly deformed section is generally cylindrically shaped and contains an inside thread.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3425041 |
Jul 1984 |
DEX |
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Parent Case Info
This is a continuation of application Ser. No. 752,916, filed July 8, 1985, now abandoned.
US Referenced Citations (14)
Foreign Referenced Citations (4)
Number |
Date |
Country |
2437308 |
Feb 1976 |
DEX |
2838466 |
Mar 1980 |
DEX |
2347560 |
Nov 1977 |
FRX |
2420 |
Jan 1912 |
GBX |
Continuations (1)
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Number |
Date |
Country |
Parent |
752916 |
Jul 1985 |
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