Patent Application
20200215675
The present invention relates to rotary hammer drill accessories. More particularly, the present invention provides for a rotary hammer drill adapter that enables a user to utilize a rotary hammer drill for a variety of tasks such as to insert threaded fasteners into concrete, wood, or block surfaces.
Many people use various power tools to complete tasks around the house or on the jobsite. Some surfaces, such as concrete, wood, or block surfaces are hard to work with, especially when drilling and securing fasteners therein. Typically, an individual is required to use two separate power tools; one tool to drill holes and a second tool needed to insert the fasteners. Hammer drills, in particular, are used to add a percussive force when drilling into stone, concrete, brick or mortar. Rotary hammer drills operate like a typical rotary drill, but also include a hammering action which aids in breaking up the material being drilled into as the drill bit works to extend the hole. Rotary hammer drills are more powerful than hammer drills and have separate modes for hammer only, which does not rotate the bit, drill only, which does not include the hammering action, and hammer drill which both rotates the bit and includes the hammering action.
Traditional drills have a three-jaw chuck which open and closed to secure bits therein. These bits include a smooth cylindrical shaft which is secured when the three jaws of the chuck iris tight against the shaft of the bit. Many people have cases filled with bits, such as screw drivers, square socket wrenches, and the like which are used to secure fasteners. Many of these standard bits include a hexagonal shaft that secures in a hexagonal adapter, which in turn secures in the three-jaw chuck. However, these standard bits are not effective when utilized with a rotary hammer drill. When typical bits are used in a hammer drill or a rotary hammer drill, the smooth cylindrical shaft can slide within the chuck and wear away at both the shaft of the drill bit and the chuck of the drill.
Most rotary hammer drills utilize a slotted drive system (“SDS”) style of chuck. The SDS style of chuck is specifically engineered to keep complementary SDS-style drill bit shafts in the chuck via a series of grooves and sliding keyways. The SDS chuck includes bearings that slide within the series of grooves, thus allowing the SDS-style drill bit shaft to move in a hammer-like manner while still being secured in the SDS-style chuck. The sliding keyways keep the bit secured in the chuck while the chuck is rotating. These SDS-style drill bits are constructed to cut holes in the material but are not used to secure fasteners as well.
The present invention substantially diverges in design elements from the known art and consequently it is clear that there is a need in the art for an improvement to existing rotary hammer drill accessories. In this regard the present invention substantially fulfills these needs.
In view of the foregoing disadvantages inherent in the known types of rotary hammer drill accessories now present in the prior art, the present invention provides a rotary hammer drill adapter wherein the same can be utilized in concert with a rotary hammer drill for a variety of tasks such as to insert threaded fasteners into concrete, wood, or block surfaces. The present rotary hammer drill adapter comprises an elongated body having a shank end and an opposing bit end. The shank end includes a plurality of grooves disposed opposite each other. The shank end further includes a plurality of sliding keyways disposed opposite each other, wherein each of the plurality of sliding keyways is situated between a pair of the plurality of grooves. In various embodiments, the bit end includes a hexagonal opening. In such embodiments, the bit end receives complementary bits with a hexagonal shaft via the hexagonal opening. In various alternate embodiments, the bit end is a tool such as a screwdriver, a drill, and a square socket wrench driver. The rotary hammer drill adapter allows a user to utilize a rotary hammer drill for a variety of tasks such as to insert threaded fasteners into concrete, wood, or block surfaces.
Other objects, features and advantages of the present invention will become apparent from the following detailed description taken in conjunction with the accompanying drawings.
Although the characteristic features of this invention will be particularly pointed out in the claims, the invention itself and manner in which it may be made and used may be better understood after a review of the following description, taken in connection with the accompanying drawings wherein like numeral annotations are provided throughout.
Reference is made herein to the attached drawings. Like reference numerals are used throughout the drawings to depict like or similar elements of the rotary hammer drill adapter. For the purposes of presenting a brief and clear description of the present invention, a preferred embodiment will be discussed as used for the rotary hammer drill adapter. The figures are intended for representative purposes only and should not be considered to be limiting in any respect.
Referring now to
In one embodiment, the bit end 130 further comprises an interface. In the shown embodiment, the interface comprises a hexagonal opening 135 disposed on the distal surface 136 of the bit end 130. In such an embodiment, the hexagonal opening 135 is adapted to receive complementary bits (as seen in
Referring now to
The shank end 120 further comprises a plurality of sliding keyways 210. In the shown embodiment, the sliding keyways 210 are disposed opposite each other. Further, in the shown embodiment, the sliding keyways 210 are disposed between a pair of the plurality of grooves 200. The sliding keyways 210 are disposed along the shank end 120 of the elongated body 100 and extend to the distal end 201 thereof. In various embodiments, the shank end 120 of the rotary hammer adapter fits within an SDS chuck, an SIDS Plus chuck, and an SDS Max chuck. In other embodiments, the shank end 120 of the rotary hammer adapter is adapted to be received by, and secured to, a rotary hammer drill and a hammer drill.
Referring now to
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It is therefore submitted that the instant invention has been shown and described in what is considered to be the most practical and preferred embodiments. It is recognized, however, that departures may be made within the scope of the invention and that obvious modifications will occur to a person skilled in the art. With respect to the above description then, it is to be realized that the optimum dimensional relationships for the parts of the invention, to include variations in size, materials, shape, form, function and manner of operation, assembly and use, are deemed readily apparent and obvious to one skilled in the art, and all equivalent relationships to those illustrated in the drawings and described in the specification are intended to be encompassed by the present invention.
Therefore, the foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the invention.
This application claims the benefit of U.S. Provisional Application No. 62/789,621 filed on Jan. 8, 2019. The above identified patent application is herein incorporated by reference in its entirety to provide continuity of disclosure.
| Number | Date | Country | |
|---|---|---|---|
| 62789621 | Jan 2019 | US |
