Improved Sleeve Anchor / Wedge Anchor

This invention relates to an improved sleeve anchor or wedge anchor which can perform as a drill bit during the drilling process and function as a strong wall fastener for structural fixture as well.

An improved sleeve anchor comprises a tubular shell (20) with plurality of clefts (21) which extends from one end to the body part (23) of the tubular shell; a shank (10) defined by drill bit (11) with fluted part (12) at one end, shank body (13) and threaded part (14) at the opposite end with a locking groove (17b) placed at the upper top surface of the threaded end (18) in which the threaded part (14) and the shank body (13) are telescopically inserted into the tubular shell (20) with the cleft end (24) directed to the drill bit (11); a nut (15) having at least one locking groove (17a) is fixed at the threaded end (18) of the shank (10); and a locking means (25) to be inserted into the locking grooves (17a and 17b) on the shank (10) and nut (15) to prevent rotational movement of the nut (15) during the drilling process, wherein said fluted part (12) is tapered towards the threaded end (18) to form an expander wedge to expand the cleft end (24) of the tubular (20) shell to form a strong fixture while the shank is drawn upward by the spinning the nut (15) once the locking means (26) being removed.

Summary of Invention

This invention aims to:

1. Provide a hybrid type of sleeve anchor or wedge anchor which is not only used as a strong fixture for securing heavy items on wall but also function as a drill bit in the corresponding size of the sleeve anchor itself.


2. Relate to a novel type of sleeve anchor that can be easily handled and used with wrench preferably coupled with a power tool. In more particular, the present invention enables the user to drill the wall and fix the sleeve anchor on the wall only using a powered socket wrench without changing different types of clamp jaws or drill bits as in normal drills.


3. Reduce the cost for wall drilling process due to abrasion of the drill bits or the damage of the targeted object caused by worn drill bits.


4. Provide improved sleeve anchor comprises a tubular shell with plurality of clefts which extends from one end to the body part of the tubular shell; a shank with one end shaped into drill bit with fluted part, a shank body and the remaining part of the shank is threaded with a groove predisposed at the upper top surface of the threaded end in which the threaded part of the shank are telescopically inserted into the tubular shell with the cleft end directed to the drill bit; a nut having at least one groove is , fixed at the threaded end of the shank; and a locking means to be inserted into the grooves on the shank and nut to prevent rotational movement of the nut during the drilling process, wherein said flute part is tapered towards the threaded end to form an expander wedge to expand the cleft end of the shell to form a strong fixture while the shank is drawn upward by the ' nut once the locking means being removed.


5. Include the use of washer with the nut to significantly enhance the fixture of the present improved sleeve anchor on the wall.


6. Shape the part of drill bit into the form masonry drill bit or core drill bit to ease the process of drilling.