Abstract:
A power tool including a end effector rotatable with respect to the housing, a collar rotatable with respect to the housing, a printed circuit board (PCB) rotatably fixed with respect to the housing, and a light element operatively connected to the PCB and adjacent to the end effector and in a recess of the collar and located to illuminate a workpiece machined by the power tool. A method of providing light for a workpiece being machined by a power tool including locating lighting elements around a spindle of a power tool, aligning the lighting elements to shine light on a workpiece being machined by the power tool, operatively connecting the lighting elements to a PCB, containing and supporting the PCB with a guide, supporting wires configured to provide power to the PCB with the guide, locating the lighting elements, PCB and guide in a rotatable collar, and preventing the lighting elements, PCB and guide from rotating when the collar rotates.

Description:
RELATED APPLICATIONS 
     This application is a continuation of, and claims priority to, U.S. patent application Ser. No. 12/379,585, filed Feb. 25, 2009, titled “Light for a Power Tool and Method of Illuminating a Workpiece,” which is incorporated by reference. 
    
    
     FIELD OF THE INVENTION 
     The present application relates generally to handheld power tools. More particularly, the present application relates to handheld power tools having a light configured to shine onto a workpiece machined by the power tool. 
     BACKGROUND OF THE INVENTION 
     Power tools are often used in a variety of conditions ranging from well-lit indoor work spaces to outside construction sites or other areas that are not always well-lit. Accordingly, it is desirable to provide a method or apparatus that permits a power tool to have a lighting feature that will illuminate the workpiece that is being machined or worked on by the power tool. Such a lighting feature will assist a user to be able to adequately see the workpiece or work area that is being worked on or machined by the power tool even in substandard light conditions. 
     Because power tools may be used in adverse environmental conditions, it is desirable to protect such a lighting feature from the adverse environmental conditions. 
     SUMMARY OF THE INVENTION 
     The foregoing needs are met, to a great extent, by the present invention, wherein in one aspect an apparatus is provided that in some embodiments provides a power tool having lighting features that will illuminate a workpiece being machined by the power tool. In some embodiments in accordance with the invention, the lighting feature is protected from the environment in which the power tool operates. 
     In accordance with one embodiment of the present invention, a power tool is provided. The power tool includes a housing, a end effector rotatable with respect to the housing, a collar rotatable with respect to the housing, a printed circuit board (PCB) rotatably fixed with respect to the housing, and a lighting element operatively connected to the PCB and adjacent to the end effector and in a recess of the collar and located to illuminate a workpiece machined by the power tool. 
     In accordance with another embodiment of the present invention, a power tool is provided. The power tool includes a rotatable end effector, a rotatable collar, a printed circuit board (PCB), lighting elements operatively connected to the PCB and adjacent to the end effector and located to illuminate a workpiece machined by the power tool, and a guide supporting the PCB and wires configured to provide power to the PCB for illuminating the lighting elements, wherein the PCB and a portion of the guide are generally circular in shape, the lighting elements are annularly arranged on the PCB and portion of the end effector extends through a hole in the defined by the guide and PCB and the guide defines a groove and the PCB is located in the groove. 
     In accordance with yet another embodiment of the present invention, a method of providing light for a workpiece being machined by a power tool is provided. The method includes locating lighting elements around a spindle of a power tool, aligning the lighting elements to shine light on a workpiece being machined by the power tool, operatively connecting the lighting elements to a PCB, containing and supporting the PCB with a guide, supporting wires configured to provide power to the PCB with the guide, locating the lighting elements, PCB and guide in a rotatable collar, and preventing the lighting elements, PCB and guide from rotating when the collar rotates. 
     There has thus been outlined, rather broadly, certain embodiments of the invention in order that the detailed description thereof herein may be better understood, and in order that the present contribution to the art may be better appreciated. There are, of course, additional embodiments of the invention that will be described below and which will form the subject matter of the claims appended hereto. 
     In this respect, before explaining at least one embodiment of the invention in detail, it is to be understood that the invention is not limited in its application to the details of construction and to the arrangements of the components set forth in the following description or illustrated in the drawings. The invention is capable of embodiments in addition to those described and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein, as well as the abstract, are for the purpose of description and should not be regarded as limiting. 
     As such, those skilled in the art will appreciate that the conception upon which this disclosure is based may readily be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present invention. It is important, therefore, that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present invention. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a side view illustrating a power tool in accordance with an embodiment of the invention. 
         FIG. 2  is a perspective view illustrating a front portion of a power tool in accordance with an embodiment of the invention. 
         FIG. 3  is a perspective close-up view of the power tool of  FIG. 2  with the end effector removed in order to more distinctly show surrounding elements. 
         FIG. 4  is a perspective view similar to that shown in  FIG. 3  with a retaining ring removed in order to more clearly show surrounding elements. 
         FIG. 5  is a perspective view of a wire guide and printed circuit board (PCB) having light emitting diode (LED) elements. 
         FIG. 6  is a partial perspective view of a bottom portion of the wire guide and PCB. 
         FIG. 7  is a perspective view of the PCB and wires with the wire guide removed. 
         FIG. 8  is a partial perspective rear view of the wire guide, PCB, and wires. 
         FIG. 9  is a partial exploded perspective view of the wire guide and a power tool having some elements removed to better show other elements. 
         FIG. 10  is a partial perspective view of a wire guide, clutch adjusting nut, clutch spring, and clutch washer mounted on the wire guide. 
         FIG. 11  is a partial perspective view of a power tool and clutch collar where the clutch collar is shown in a forward position to illustrate the clutch adjusting nut, clutch spring, and clutch washer mounted to the nose cone. 
         FIG. 12  is a partial rear perspective view of the wire guide mounted on the clutch collar. 
         FIG. 13  is a partial perspective view of the wire guide mounted onto the nose cone. 
         FIG. 14  is a partial cutaway perspective view of a nose cone as well as other elements mounted to the nose cone. The end effector and power transmission elements are removed for clarity. 
         FIG. 15  is a perspective rear view of a holder in accordance with another embodiment of the invention. 
         FIG. 16  is a partial perspective view of a power tool equipped with a holder similar to that shown in  FIG. 15 . 
         FIG. 17  is a partial perspective view with part of the housing removed of a power tool equipped with a holder similar to that shown in  FIG. 15 . 
         FIG. 18  is a partial perspective view of a power tool with part of the housing removed to expose interior components. 
         FIG. 19  is a partial perspective cut-away view of a power tool equipped with a holder similar to that shown in  FIG. 15 . The cut-away view illustrates some of the internal components of the power tool. 
     
    
    
     DETAILED DESCRIPTION 
     The invention will now be described with reference to the drawing figures, in which like reference numerals refer to like parts throughout. An embodiment in accordance with the present invention provides a power tool having a light ring configured to shine light onto a workpiece being machined by the power tool. 
     According to some embodiments of the invention, light emitting elements, such as light emitting diodes (LEDs), are placed in an annular or ring shape around part of the end effector and are configured to shine forward to illuminate the tool or accessory held by the end effector and the workpiece being machined by the tool. The end effector may be a tool or accessory holder mounted to an output spindle of the tool. Examples of end effectors that may be used in accordance with the invention may be the 7000 Series chuck manufactured and marketed by the Jacobs Chuck Manufacturing Company of Clemson, S.C. and quick change chucks similar to that which is found on products such as a DC825KA Impact Driver and a DC815KA Impact Driver that are manufactured and marketed by the DeWalt Industrial Tool Company of Baltimore, Md. 
     While several different types of lighting elements can be used in accordance with the invention, such as light bulbs (for example, xenon bulbs) or other lighting elements, LED lights are discussed here as an example and do not limit embodiments in accordance with the invention to tools using LEDs. The LED lights, or other lighting elements, and associated parts are locked to the housing of the tool and do not rotate when the power tool is operated. The lights may be powered by the same power source that provides power to the power tool&#39;s motor. In the case of most cordless power tools, it is a battery that powers the power tool and in the case of corded tools it is AC current provided from source voltage through a cord. This AC current may be modified according to the needs of the lighting device being employed. In the case of LED lights, a rectifer may be employed to convert AC current to DC. 
     An embodiment in accordance with the invention is illustrated in  FIG. 1 .  FIG. 1  shows a power driver  20 . The power driver  20  has a housing  22 . The housing may be of a clam shell type or any other suitable type housing. The power driver  20  may have a nose cone  23  located at the front portion of the power driver  20 . A handle  24  projects downwardly from the housing  22  and is terminated with a battery  26 . The battery  26  provides the power to turn the end effector  28 . 
     The end effector  28  may be configured to hold an accessory or tool such as a drill bit or a driving type accessory such as a Philips or standard screwdriver. Other types of tools or accessories may be held and used in the end effector  28  as can appreciated by one skilled in the art. The movement of the end effector  28  may be controlled by the trigger  30 . The trigger  30  may selectively provide power from the battery  26  to the motor  32  located within the housing  22 . In some embodiments of the invention, the more the trigger or switch  30  is depressed the more power may be applied to the motor  32  which may cause the end effector  28  to spin faster. 
     The power driver  20  may be equipped with a clutch collar  34 . Other embodiments in accordance with the invention may not have a rotating clutch collar, but rather a different rotating collar mechanism. The rotating collar mechanism may be a drill/hammer mode selector, a gear shifter, an on/off switch, a tool variable speed control or other rotating collar control mechanism. However, this specification will refer to a clutch collar as an example but does not limit embodiments in accordance with the invention to tools having clutch collars. The clutch collar  34  can provide protection for interior portions of the power driver  20 , particularly the transmission and other internal components of the power driver  20  that may be mounted on the nose cone  23 . The clutch collar  34  may be rotated to adjust the transmission. An example of a clutch and transmission that may work in accordance with the invention is shown in U.S. Pat. No. 7,066,691 which is incorporated by reference in its entirety. Of course, most any type of clutch and transmission may be used in accordance with the invention. Different angular positions of the clutch collar  34  may provide different amounts of torque and/or speed to the end effector  28  for a given trigger  30  position. A numbered scale  36  may appear on the clutch collar  34  in order to provide a user an indication of the setting of the clutch collar  34 . In some embodiments the user may turn the clutch collar  34  to a desired position by hand. 
     A light ring  38  is located on a front portion of the power tool  20  just behind the end effector  28  in a recess  39  in the clutch collar  34 . 
     In  FIG. 2 , a partial perspective view of a front portion of the power driver  20  is shown. An indicator  37  may be located on the nose cone  23 . The indicator  37  may provide a reference for the user for determining the angular position of the clutch collar  34  and a reference point for comparing the numbers on the numbered scale  36 . The light ring  38  is located within a recess  39  of the clutch collar  34 . The light ring  38  may include a lens cover  40 . The lens cover  40  may protect interior components of the tool from moisture or other contaminants. The lens cover  40  may include blisters  42  located on the lens cover  40  as to be directly over the LEDs  58  (as shown in  FIG. 5 ). The blisters  42  may be translucent or clear in order to permit light generated by the LEDs  58  to pass through. In some embodiments the blisters  42  may direct or focus the light. The blisters  42  may be round, rectangular, square or any other shape. In some embodiments the blisters  42  are shaped to correspond with the shape of the lighting elements  58 . In other embodiments the light may simply pass through the blisters  42 . The remainder of the lens cover  40  may be a dark color. Other color schemes may be used in accordance with the invention. 
     The lens cover  40  is held axially in place from moving in a forward direction toward the end effector  28  by retaining ring  44 . The retaining ring  44  is mounted on a retainer  46  which is part of the nose cone  37  as better illustrated in  FIGS. 13 and 14  and described in more detail later below. 
       FIG. 3  is a similar view to that shown in  FIG. 2 , however, the end effector  28  is removed to better illustrate certain features associated with the retaining ring  44  and the retainer  46 .  FIG. 3  shows portions  48  of the retaining ring  44  exposed in gap  50  that would fit within the groove  52  if it were not in the gap  50 . The retaining ring  44  fits within a groove  52  in the retainer  46 . When the retaining ring  44  is placed in the groove  52  the retaining ring  44  is secured in place. The retaining ring  44  prevents the lens cover  40  from axially moving forward toward the end effector  28 . 
       FIG. 4  is a similar view as that shown in  FIG. 3 , however, the retaining ring  44  has been removed as well as the end effector  28  to better illustrate features of the lens cover  40  and the retainer  46 . The lens cover  40  includes tabs  56  which are located within the gaps  50  of the retainer  46 . The tab  56  and gap  50  combination keep the lens cover  40  aligned and from rotating around the retainer  46 . The groove  52  is also illustrated in  FIG. 4  in which the retaining ring  44  is located as shown in  FIG. 3 . 
       FIG. 5  illustrates other aspects of the light ring  38  which are normally contained within the clutch collar  34  and located behind the lens cover  40 . As part of the light ring  38 , light emitting diodes or LEDs  58  are located at various points around the light ring  38 . In some embodiments in accordance with the invention, the LEDs  58  emit white light although in other embodiments the LEDs  58  might emit other colors of light. In some embodiments different LEDs on the same tool could emit different colors of light. While the embodiment shown in  FIG. 5  illustrates three LEDs  58  any number of LEDs may be used in accordance with the invention including one or more. 
     The LEDs  58  are mounted to a ring-shaped printed circuit board or PCB  60 . The PCB  60  and LEDs  58  are fit into a trench  61  in the wire way  62 . The wire way  62  and trench  61  may allow for potting of the PCB if necessary. The wire way  62  provides protection and structural strength for the PCB so that undue mechanical loads are not placed upon the PCB  60 . Such support is desirable as a PCB  60  may be fragile and subject to breaking or malfunctioning. The wire way  62  may include snap-in features  64  which allow the PCB  60  to be pushed into the wire way  62  and then the snap-in features  64  snap out once the PCB  60  is located within the wire way  62 . The snap-in features  64  prevent the PCB  60  from coming out of the wire way  62 . 
     The wire way  62  may include grooves  66 . Tabs  68  located on the PCB  62  may fit within the grooves  66  within the wire way  62 . The tabs  68  and grooves  66  combination help the PCB  60  and the wire way  62  be aligned and may prevent or resist the PCB  60  from rotating with respect to the wire way  62 . 
     The wire way  62  may include a PCB holding portion  70  which is generally circular in shape and a wire supporting portion  72 . The wire supporting portion  72  may include a channel  74  which is sized and located to contain wires  76 . The wires  76  may provide power to the PCB  60  which in turns provides power to illuminate the LEDs  58 . The wire supporting portion  72  of the wire way  62  provides a structure for the wires  76  to be supported in and provides protection for the wires  76 . The wires  76  may terminate with a plug  78 . The plug  78  may fit into plug supporting structure  80  located within the wire supporting portion  72  so that the plug  78 , which is made of a more rigid material than the wires  76 , is held securely to the wire way  62  via the plug supporting structure  80 . In some embodiments, the plug  78  may be press fit into the wire supporting portion  72  of the wire way  62 . The circuit to which the PCB  60  is connected may also include an electromagnetic surge suppression circuit (such as a zener diode) for static and over-voltage protection. The circuit may also include a resistor or resistors to drop the voltage from the battery pack voltage to an appropriate level for the LEDs. 
     Some embodiments do not have a separate PCB, wire guide, wires and connector. For example, plated plastics can be used whereby the wire guide could be first molded into a shape similar to the wire guide  62  as shown. Secondly, tracks (like on a standard PCB) could be created on this plastic piece, and could include all of the pads to mount LEDs and other components, the tracks, or “wires,” from the front of the tool back to the connector area, and could even include the male end of the connector. The components (diodes, resistors, etc.) could then be soldered to this one piece, and would be electrically connected back to the place where the wires would connect it to the switch. This would greatly simplify the assembly. 
       FIG. 6  is a partial perspective view of a bottom portion of the wire way  62 . The wire way  62  may be equipped with a collar stopping tab  82  which will be explained in more detail below as  FIG. 12  is discussed. 
       FIG. 7  is a perspective view similar to that shown in  FIG. 5 , however, the wire way  62  has been removed in order to better illustrate some of the features shown in  FIG. 7 . The LEDs  58  are mounted onto the PCB  60 . The PCB  60  shows the tabs  68 . While the embodiments shown in the figures show five tabs  68 , one skilled in the art can appreciate that other numbers of tabs or other features may be employed in order to help keep the PCB aligned and/or rotationally locked to the wire way  68 . 
     The wires  76  are attached to a rear portion of the PCB  60 . The plug  78  includes the plug stopping structure  84  which butts against a portion of the wire way  68  to prevent the plug  78  from being inserted too far into the wire way  62 . 
       FIG. 8  illustrates the plug stopping structure  84  located on the plug  78  butted against the wire supporting portion  72  of the wire way  62 . The wires  76  are located within the channel  74 . In some embodiments, the plug  78  snaps into the wire supporting portion  72  and the wires  76  may be pressed into the channel  74  in a press fit manner to secure the wires  76  into the channel  74 . A rear portion of the collar stopping tab  82  is also illustrated in  FIG. 8 . 
       FIG. 9  illustrates the housing  22  and the wire way  62 . The nose cone  23  has been removed in order to better illustrate how the plug  78  attaches to a receiving plug  86 . The plug  78  is slid into the receiving plug  76 . The plug stopping structure  84  slides into slots  87  located on the receiving plug  86 . Once the plug  78  and the receiving plug  86  have been mated together, power from the wires  88  is communicated to the wire  76 . The joint made of the plug  78  and the receiving plug  86  provide a rigid support for the connection of the wires  76  and  88 . The wires  88  may receive power from the battery  26  as controlled by the trigger  30 . In some embodiments the wires  88  extend out of a switch body associated with the trigger  30 . In other embodiments, a switch body could have connectors to which the wires  88  are soldered or otherwise connected. The trigger switch may include electronics for variable speed control. The wires  88  may be soldered to a PCB located inside the switch body. 
     In accordance with some embodiments of the invention, when the trigger  30 , as shown in  FIG. 1 , is depressed, power is sent to the wires  88  and in turn  76  to illuminate the LEDs. 
       FIG. 10  is a partial perspective view of the guide  62  showing several additional elements on the guide  62 . A clutch adjusting nut  90  is butted against the guide  62 . The stop tab  82  is fit into a notch  92  in the clutch adjusting nut  90 . The notch  92  in the clutch adjusting nut  90  aligns to the stopping tab  82  on the guide  62  to assist in providing proper assembly of the threads between the adjusting nut  90  and the nose cone  23  during assembly. In some embodiments and as shown in  FIG. 10 , the notch  92  and the clutch adjusting nut  90  may have chamfered edges  96  to the notch walls  94 . The chamfered edges  96  may assist in the stopping tab  82  to be seated in the notch  92  and the clutch adjusting nut  90 . 
     According to some embodiments, a combination of the notch  92  and the clutch adjusting nut  70  and the stopping tab  82  in combination with the other tabs and notch combinations  50 ,  56 ,  66 ,  68  can assure that the lens cover  40 , the nose cone  23 , the wire way  62 , the PCB  60 , and the clutch adjusting nut  90  are aligned with respect to each other. 
     The clutch adjusting nut  90  includes a ridge  100 . As shown in  FIG. 10  a clutch spring  102  urges at one end against the ridge  100  and at the opposite end of the clutch spring  102 , the clutch spring  102  urges against a clutch washer  104 . The clutch spring  102  exerts a force on the ridge  100  of the clutch adjusting nut  90  which in turn urges the wire way  62  against the lens cover  40  and ultimately against the retaining ring  44 . The force exerted by the clutch spring  102  keeps the light ring assembly  38  in axial position. As shown in  FIG. 11  the clutch washer  104  urges against the nose cone  23 . 
       FIG. 11  illustrates the clutch washer  104 , clutch spring  102 , and the clutch adjusting nut  90  mounted to the nose cone  23 . The clutch collar  34  is shown in a forward axial position and not yet installed on the power tool  20  in order to expose the clutch washer  104 , the clutch spring  102  and the clutch adjusting nut  90 . 
     To provide ease in the assembly of the power tool  20 , a tab  98  on the clutch adjusting nut  90  is scored with marks or notches  106  on one of the adjustment tabs  98 . The scoring  106  provides a visual aid when assembling the collar  34  to properly align the clutch collar  34 . The adjustment tab  98  on the clutch adjusting nut  90  is aligned with a desired notch  108  in the clutch collar  34 . Once the desired notch  108  is aligned with the desired adjustment tab  98 , the clutch collar  34  can be fitted onto the power tool  20 . In some embodiments, the indicator  34  and the numbered scale  36  may also provide assistance in aligning the clutch collar  34  to provide proper assembly of the clutch collar  34  onto the nose cone  23 . 
       FIG. 12  is a partial perspective view of the clutch collar  34  installed onto the guide  62 . Other elements have been omitted from  FIG. 12  in order to better show the interaction between the guide  62  and the clutch collar  34 . The clutch collar  34 , in some embodiments in accordance with the invention, is rotatable. The clutch collar  34  is rotatable on the power tool  20  in order to provide different torque and/or speed settings for the end effector  28 . It may be desirable to limit the rotation of the clutch collar  34  in both directions to establish a maximum setting for turning the clutch collar clockwise and a maximum setting when turning the clutch collar counterclockwise as shown in  FIG. 12 . Making maximum and minimum settings is, in some embodiments, accomplished by using the collar stopping tab  82  which butts against the stop  110  on the clutch collar  34 . The wall  112  on the stop  110  butts against a wall  114  on the collar stopping tab  82  to provide a limit to clutch collar  34  rotation in a clockwise direction as viewed in  FIG. 12 . The same stop  110  and collar stopping tab  82  provide a stop for rotating the clutch collar  34  in the opposite direction (i.e., counterclockwise as viewed in  FIG. 12 ). This is accomplished when the clutch collar  34  is rotated so that the opposite wall  116  on the stop  110  butts against the opposite wall  118  on the tab  82 . 
       FIG. 12  also illustrates additional notches  108  in the clutch collar  34  for providing detents when the clutch collar  34  is rotated to various settings with respect to the nose cone  23 . 
       FIG. 13  is a partial perspective view of the guide  62  mounted onto a stem portion  120  of the nose cone  23 . A lock portion  124  of the guide  62  fits into a groove  122  of the stem portion  120  of the nose cone  23 . The groove  122  is sized and dimensioned so that the lock portion  124  of the wire supporting portion  72  of the guide  62  fits within the groove  122  and locks the guide  62  to be angularly fixed with respect to the nose cone  23 . The locks  124  located on the wire supporting portion  72  of the guide  62  are wider than the rest of the wire supporting portion  72  and aid in permitting the guide  62  to be securely seated in the groove  122  of the stem portion  120  of the nose cone  23 . 
     A second groove  126  is in the nose cone  23  for allowing the wire supporting portion  72  of the guide  62  to fit within the groove  126  of the nose cone  23 . The retainer  46  on the nose cone  23  and the groove  52  of the nose cone  23  are also shown forward of the guide  62 . The above described features also help align the guide  62  with respect to the nose cone  23 . 
     According to some embodiments, the retainer  46  is integral with the stem  120  and the nose cone  23 . In other embodiments of the inventions, they may be separable parts. 
       FIG. 14  is a partial cutaway perspective view of the nose cone  23  and additional parts described below.  FIG. 14  shows how the parts described herein are assembled together according to some embodiments of the invention. The transmission, spindle, and other parts associated with turning the end effector have been omitted to more clearly show the parts described herein. The retaining ring  44  is seated within the groove  52  of the retainer  46 . The retaining ring  44  provides a limit of forward axial movement of the lens cover  40 , the guide  62 , and the clutch adjusting nut  90 . The clutch spring  102  presses against the clutch washer  104  to urge the clutch adjusting nut  90  to urge the guide  62 , PCB  60 , and lens cover  40  against the retaining ring  44 . The wires  76  are located in a channel  74  defined by the guide  62  and the nose cone  23 . The wires  76  are protected from the spinning parts of the end effector mechanism. 
     Although an example of the light ring  38  is shown on a power driver  20 , it will be appreciated that the light ring  38  can be used on other rotary power tools such as impact drivers, drills, hammer drills, routers. 
     An example embodiment in accordance with the invention where a light ring  38  is mounted on a different power tool than shown in the previous FIGS. is shown in  FIGS. 15 through 19 .  FIG. 15  illustrates a perspective rear view of a holder  140  that is used on a power tool that is not equipped with a collar as described in the embodiments above. The holder  140  holds the light ring  38 . The light ring  38  includes the PCB  60  similar to that described above. The PCB  60  and the holder  140  may include snap-in features  64  similar to that described above so that the PCB  60  snaps into and is secured in the holder  140 . 
     A circular lens cover  40  may be mounted to the holder  140  in front of the PCB  60  similar to embodiments described above. The lens cover  40  may include snap-in elements that correspond with snap-in elements on the holder  140 . In other embodiments in accordance with the invention, the lens  40  may be secured in place with a retaining ring system similar to that described above. 
     The holder  140  may attach to the nose cone  23  with snap-in elements located on both the holder  140  and the nose ring  23  similar to the snap-in features  64  described in the embodiments above. In other embodiments in accordance with the invention, the light ring holder  140  may be secured in place in a variety of ways including, but not limited to, a retaining ring system similar to the embodiments described above. 
     As shown in  FIG. 15 , the holder  140  includes a housing portion  142 , a chin shroud  144 , and a wire way portion  146 . Wires  76  connect the PCB  60  (which contains light emitting elements similar to those described above) with a plug  78 . In contrast to the wire way  62  described in the embodiments above, the holder  140  does not fully support the wires  76  along the full length of the wires  76  all the way to the plug  78 . Rather, the wire way portion  146  stops at some point along the length of the wires  76 , leaving the wires  76  and the plug  78  to be not supported by the holder  140 . 
       FIG. 16  is a partial perspective view of a power tool  147  that does not have a rotatable clutch collar but rather is equipped with the holder  140 . The lens cover  40  is shown mounted in a recess in the holder  140 . The holder  140  is mounted to the nose cone  23  which is supported by the housing  22 . A fastener hole  148  is shown in the housing  22 . The fastener hole  148  provides a place for a fastener such as a screw or bolt to connect the two halves of the clam shell type housing  22  together. While the fastener is not shown in  FIG. 16 , it will be appreciated that when the power tool  147  is fully constructed that a fastener will be located in the fastener hole  148  to connect the two halves of the clam shell housing  22  together. Other embodiments of the invention may connect the clamshells of the housing  22  in other ways. Some embodiments of the invention may include one piece housings or other types of housings than the clam shell housing shown in  FIG. 16 . The chin shroud  144  is located on the holder  140  and provides a housing for a portion of the wires  76  so that the wires  76  are not exposed outside of the power tool  147 . 
       FIGS. 17 and 18  show the power tool  147  with part of the housing  22  removed. The housing  22  is a clam shell type housing and one of the clam shells is removed exposing the clam shell housing  22  located on the far side of the power tool  147 . The holder  140  is shown mounted to the nose cone  23 . A fastener hole tube  150  located in the fastener hole  148  is shown. The wires  76  are routed around the hole tube  150  and are located in the interior  152  of the housing  22 . The wires  76  are terminated with a plug  78  also located in the interior  152  of the housing  22 . 
     The interior  152  of the housing defines a space or pathway for the wires  76  and the plug  78 . The chin shroud  144  defines a wire way portion  146  through which the wires  76  are strung. The chin shroud  144  also includes retaining structure  154  which is set in a retaining area  156  defined by the housing  22 . When the two clam shells of the clam shell housing  22  are mounted together and fastened together with a fastener located in the fastener hole  148  and fastener hole tube  150 , the retaining structure  154  on the chin shroud  144  is trapped in the retaining area  156  thereby holding the chin shroud  144  and holder  140  in place on the power tool  147 . Operation of the light ring  38  is similar to that described in the embodiments above. 
       FIG. 19  is a partial perspective cut-away view showing the end effector  28  associated with the power tool  147  extending through the lens cover  40  located in front of the PCB  60 . As described above, LEDs (not shown in  FIG. 19 ) are located on the PCB  60  and configured to light the tool or workpiece being worked on by the power tool  147 . The wires  76  provide power between the PCB  60  and a power source connected via the plug  78  to power source. The wires  76  are located in the wire way portion  146  of the chin shroud  144  and the interior  152  of the housing  22 . The chin shroud  144  has the retaining structure  154  located in the retaining area  156  defined by the housing  22 . 
     The many features and advantages of the invention are apparent from the detailed specification, and thus, it is intended by the appended claims to cover all such features and advantages of the invention which fall within the true spirit and scope of the invention. Further, since numerous modifications and variations will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation illustrated and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the invention.