Patent Application
20080101100
This disclosure relates generally to power tools and more specifically to a kit that includes power tools that operate on different voltages.
In the power tool field, it is common to use different types of power tools to address the varied needs of the user of the power tools. It is also common to use power tools that operate on different voltages also to address the varied needs of the user. The need to use different types of power tools and/or power tools of different voltages typically cause manufacturing, costs, storage and charging issues.
The present disclosure relates to a kit comprising a plurality of power tools configured to operate on different operating voltages and a plurality of receivers configured to provide different output charging voltages for charging the power tools. Each receiver is configured to engage and charge only the one or more power tools having an operating voltage equal to or greater than the output.charging voltage of that receiver. The power tools may comprise power tool housings of substantially similar construction and the receivers may comprise receiver housings of substantially similar construction.
Features and advantages of the disclosure will be set forth in part in the description which follows and the accompanying drawings described below, wherein an embodiment of the disclosure is described and shown, and in part will become apparent upon examination of the following detailed description taken in conjunction with the accompanying drawings.
While the present disclosure may be susceptible to embodiment in different forms, there is shown in the drawings, and herein will be described in detail, an embodiment with the understanding that the present description is to be considered an exemplification of the principles of the disclosure and is not intended to limit the disclosure to the details of construction, methods and the arrangements of components set forth in the following description or illustrated in the drawings.
Each of the terminal blocks 14A-14F is secured to or otherwise associated with a corresponding one of the power tools 10A-10F and electrically connects a respective and one of the power tools 10A-10F with one of the receivers 12A-12F. Each of the receivers 12A-12F includes a battery pack or any other suitable power source. In accordance with the present disclosure, the power tools 10A-10F, receivers 12A-12F and terminal blocks 14A-14F can be in any suitable number and have any suitable construction and the terminal blocks can be omitted or can have substantially different constructions depending upon the construction of the power tools and receivers.
In the illustrated embodiment, the power tools 10A-10F comprise power tool housings 20A-20F of substantially similar, if not identical, construction. With reference to
Each of the power tools 10A-10F may operate on different voltages. For example, the power tool 10A is configured to operate on 9.6 volts, the power tool 10B is configured to operate on 12 volts, the power tool 10C is configured to operate on 14.4 volts, the power tool 10D is configured to operate on 18 volts, the power tool 10E is configured to operate on 20 volts, and/or the power tool 10F is operated on 24 volts. The power tools 10A-10F may operate on any other voltages, including any other combination of voltages, in accordance with other embodiments. Each of the power tools includes an on-off switch 32A-32F.
The base 26A-26F of each power tool housing 20A-20F defines on opposed sides 36A-36F a pair of slots 38A-38F extending along most of the length of the base. The slots 38A-38F are defined by a pair of ridges 40A-40F extending along the entire length of the side 36A-36F of the base 26A-26F and by a pair of outwardly extending rails 50A-50F extending along most of the length of the base. The front of the base defines a U-shaped opening 52A-52F and the bottom of the base defines a void 54A-54f contiguous with the U-shaped opening for receiving a corresponding one of the terminal blocks 14A-14F.
The receivers 12A-12F comprise receiver housings 60A-60F of substantially similar, if not identical, construction. Each of the receivers 12A-12F is configured to engage and charge the one or more of the power tools 10A-10F that have an operating voltage equal to or greater in magnitude than the output charging voltage of the receiver.
Accordingly, each of the receivers 12A-12F also includes the battery pack or any other suitable power source and any suitable hardware and electronic components to provide power from the battery pack or other power source to the one or more power tool 10A-10F. The battery packs may be contained within the receiver housing 60A-60F of be otherwise associated with the receivers 12A-12F.
The receivers 12A-12F may each provide different output charging voltages for charging the one or more of the power tools 10A-10F. For example, the receiver 12A provides an output charging voltage of 9.6 volts, the receiver 12B provides an output charging voltage of 12 volts, the receiver 12C provides an output charging voltage of 14.4 volts, the receiver 12D provides an output charging voltage of 18 volts, the receiver 12E provides an output charging voltage of 20 volts, and the receiver 12F provides an output charging voltage of 24 volts. The receivers 12A-12F may provide any other output charging voltages, including any other combination of voltages, in accordance with other embodiments. Each receiver includes a power switch 58A-58F.
Each receiver housing 60A-60F includes a top portion 62A-62F that defines a rear U-shaped opening 64A-64F and a void 66A-66F contiguous with the U-shaped opening. The top portion 62A-62F of each receiver housing 60A-60F also includes a pair of inwardly-extending rails 70A-70F that each define upper and lower slots 72A-72F and 74A-74F separated by the rail 70A-70F. The upper and lower slots 72A-72F and 74A-74F of each receiver housing are contiguous with the void 66A-66F. The receiver housing 60A-60F is configured to be slidably engageable with each of the power tool housings 20A-20F such that the pair of rails 70A-70F of the receiver housing 60A-60F are slidably received by the pair of slots 38A-38F defined by the base 26A-26F of the power tool, such that the rails 50A-50F of the power tool housings are received by the upper slots 72A-72F of the receiver housings, and such that the ridges 40A-40F of the base of the power tool are slidably received by the lower slots 74A-74F of the receiver of the housing. Thus, each of the power tool housings 20A-20F is slidably engageable with each of the receiver housings 60A-60F, except that the present disclosure further includes means for selectively engaging with each receiver 12A-12F and charging one or more power tools 10A-10F that operate on a voltage equal to or greater than the output charging voltage of the receiver.
Accordingly, in the illustrated embodiment, all of the power tool housings 20A-20F are of identical or substantially identical construction and all of the receiver housing 60A-60F are of identical or substantially identical construction. Thus, in the illustrated embodiment, all of the power tool housings 20A-20F are slidably engageable with all of the receiver housings 60A-60F by virtue of the above-described engaging structure at the base 26A-26F of the power tool housings and the top portion 62A-62F of the receiver housings. As a result, the kit in accordance with the illustrated embodiment of the present disclosure may be easier and less expensive to manufacture and may also provide other use and storage advantages over other kits or assemblies of power tools of different types and voltages and receivers or other charging structures.
Notwithstanding that in the illustrated embodiment all of the power tool housings 20A-20F are configured to engage all of the receiver housings 60A-60F, the present disclosure further includes the means for selectively engaging each receiver 12A-12F and charging only the one or more power tools 10A-10F that operate on a voltage equal to or greater to the output charging voltage of the receiver 12A-12F. Such engaging and charging means may be in any suitable form. In the illustrated embodiment, for example, the engaging and charging means comprises the terminal blocks 14A-14F and slots 80A-80E defined by the receiver housings 60A-60E, and the above-described engaging structure of the base 26A-26F of the power tool housings 20A-20F and the top 62A-62F of the receiver housing 60A-60F. The engaging and charging means may further include a contact plate 82A-82F which may incorporate any suitable structure for contacting the terminal blocks 14A-14E. Each of the terminal blocks 14A-14F is associated with one of the power tools 10A-10F. Each terminal block 14A-14F is received by the void 54A-54F of the base of the corresponding power tool 10A-10F and is secured to the base in any suitable manner.
The terminal blocks 14A-14F and slots 80A-80F are configured such that each terminal block is engageable with and can charge only the one or more receivers 12A-12F having an output charging voltage equal to or less than the operating voltage of the power tool 10A-10F to which the terminal block is secured. Each terminal block 14A-14E includes a bottom rib 90A-90E receivable in one or more of the slots of one or more corresponding receivers 12A-12E to engage one or more receivers, but the position of the rib of each terminal block depends upon the operating voltage of the power tool 10A-10E to which the terminal block is secured. The terminal block 14F does not include any ribs 90 and the receiver housing 60F does not include any of the slots 80, so that the power tool 10F is engageable with all of the receivers 12A-12F but the receiver 12F is not engageable with any of the power tools 10A-10E. Each terminal block 14A-14F further includes contacts 94A-94F.
The positions of the slots 80A-80F on the receivers 12A-12F depend upon the voltage provided by the receiver. Additionally, the receivers 14A-14D may have more than one slot so that the receivers also engage power tools having operating voltages greater than the output charging voltage of the receiver. Thus, in the illustrated embodiment, the terminal block 14A-14F associated with each power tool 10A-10F engages only the receivers 14A-14F having output charging voltages that equal or are less than the operating voltage of the power tool, and, as a result, each power tool engages and can be charged by only the receivers having output charging voltages that equal or are less than the operating voltage of the power tool.
While embodiments have been illustrated and described in the drawings and foregoing description, such illustrations and descriptions are considered to be exemplary and not restrictive in character, it being understood that only illustrative embodiments have been shown and described and that all changes and modifications that come within the spirit of the disclosure are desired to be protected. The description and figures are intended as illustrations of embodiments of the disclosure, and are not intended to be construed as containing or implying limitation of the disclosure to those embodiments. There are a plurality of advantages of the present disclosure arising from various features set forth in the description. It will be noted that alternative embodiments of the disclosure may not include all of the features described yet still benefit from at least some of the advantages of such features. Those of ordinary skill in the art may readily devise their own implementations of the disclosure and associated methods, without undue experimentation, that incorporate one or more of the features of the disclosure and fall within the spirit and scope of the present disclosure and the appended claims.
