Pipe thread processing mechanism and system

Abstract

A power driven tool is described. The tool includes one or more threaded jaws, one or more release jaws, and a drive ring that is selectively positionable relative to the tool and engages with the jaws to selectively extend or retract the jaws. A tool is also described that includes one or more lights for illuminating a workpiece. A tool is also described that has a distally located shoulder region where force can be easily applied. In addition, a gear train assembly for a power driven tool is described.

Description

Technical Field

[0001] The present subject matter relates to hand-held power drivers and mechanisms for pipe threading machines. The present subject matter also applies to threading operations performed using a threading machine or similar device. Background Art

[0002] Current and typical uses of conventional power driven tools are as follows. For example, the tool transmits torque to a die or similar device to rotate the device relative to a tube or other member or longitudinal axis. However, although the die is reliably rotationally engaged, it is not significantly axially retained by the tool or retained within the tool along the longitudinal axis. Therefore, there are situations where the die may unexpectedly separate axially from the tool during use, causing trouble to the user.

[0003] In addition, the user must often apply an axial force to the die to allow the thread cutting die to begin removing material from the nearby area of ​​the tube or workpiece. If insufficient force is applied, the die will simply chamfer the end of the tube and will not "bite" into the tube surface to form the helical threads. Therefore, some users will push the tool to generate an axial "starting" force to initiate this "bite". In current practice, most users apply such axial force directly on the rotating die.

[0004] Although satisfactory in many respects, there remains a need for pipe threading assemblies and related systems that address these operational issues. Summary of the invention

[0005] The difficulties and disadvantages associated with previous methods of controlling pipe threading operations are addressed in the present subject matter as follows.

[0006] On the one hand, the present subject matter provides a power-driven tool, including a tool body and a tool head extending from the tool body. The tool head defines an axially accessible tool opening. The tool head includes a cylindrical wall that is concentrically and rotatably supported in the tool opening. The power-driven tool also includes at least one threaded claw that can be radially positioned to extend into the tool opening. The power-driven tool also includes at least one release claw that can be radially positioned to extend into the tool opening. In addition, the power-driven tool also includes a drive ring rotatably mounted on the tool head. The drive ring engages with at least one threaded claw and at least one release claw and is rotatably positioned between (i) a first position and (ii) a second position, in which the at least one threaded claw extends into the tool opening, and in which the at least one threaded claw is retracted from extending into the tool opening and at least one release claw extends into the tool opening.

[0007] In another aspect, the subject matter provides a power driven tool including a tool body and a tool head extending from the tool body. The tool head defines an axially accessible tool opening. The tool head includes a cylindrical wall oriented concentrically and rotatably supported in the tool opening. The tool also includes at least one lamp directed to emit light toward the tool opening.

[0008] As will be realized, the subject matter described herein is capable of other and different embodiments, and its several details are capable of modifications in various respects, all without departing from the subject matter claimed.Accordingly, the drawings and description are to be regarded as illustrative and not restrictive. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1A A conventional power driven tool is shown.

[0010] Figure 1B A conventional die is shown.

[0011] Figure 2 An embodiment of a head of a power driver tool according to the present subject matter is shown.

[0012] Figure 2A yes Figure 2 The head is shown in cross section taken along line 2A-2A.

[0013] Figure 3 Shows the head and Figure 2 The outside of the embodiment of the drive ring depicted in FIG.

[0014] Figure 3A yes Figure 3 The drive ring and head shown in FIG. 1 are a cross-section taken along line 3A-3A.

[0015] Figure 4 Shows Figure 3 The inner face of the embodiment of the drive ring shown in .

[0016] Figure 4A yes Figure 4 A cross section of the drive ring shown in FIG. 4 is taken along line 4A-4A.

[0017] Figure 5A The head of the power tool is shown. Figure 3 drive ring.

[0018] Figure 5B Shows Figure 5A The inner surface of the drive ring, wherein various components are slidably arranged in the grooves of the drive ring.

[0019] Fig. 6A Shows Figure 3 The drive ring and head of the power drive tool and parts of the drive ring rotate.

[0020] Figure 6B Shows Fig. 6A The inner surface of the drive ring, wherein various components are slidably arranged in the grooves of the drive ring.

[0021] Fig. 7A Shows Figure 3 The drive ring and head of the power drive tool and the complete rotation of the drive ring.

[0022] Figure 7B Shows Fig. 7A The inner surface of the drive ring, wherein various components are slidably arranged in the grooves of the drive ring.

[0023] Figure 8 A portion of an embodiment of a power tool having at least one light in accordance with the present subject matter is shown.

[0024] Fig. 9 A plurality of openings is shown. Figure 1B Die head.

[0025] Fig. 10A and Fig. 10B A portion of another embodiment of a power tool having at least one light in accordance with the present subject matter is shown.

[0026] Fig.11 is a schematic diagram of a gear assembly in a conventional power drive tool.

[0027] Fig.12 is a schematic diagram of an embodiment of a gear assembly in a power driven tool according to the present subject matter.

[0028] Fig.13 is from Fig.12 The line XIII-XIII in Fig.12 View of the motor, gear train, and ring gear.

[0029] Fig.14 is a schematic diagram of another embodiment of a power tool having at least one light in accordance with the present subject matter.

[0030] Fig.15 is a schematic diagram of another embodiment of a power tool having at least one light in accordance with the present subject matter.

[0031] Fig.16 is a cross section of a head of a power driver tool according to the present subject matter.

[0032] Fig.17 is an exploded assembly view of a head of a power driver tool according to the present subject matter. DETAILED DESCRIPTION

[0033] The present subject matter prevents accidental separation of a die head from a power-driven tool. The present subject matter provides an assembly for positively engaging and / or disengaging a die head from a power-driven tool.

[0034] The present subject matter also provides one or more lights on a power drive tool for illuminating a workpiece for ease of use. In current threading practices, the user must visually identify when threading is complete, so visibility in this area is critical. Additionally, in many applications, handheld power drivers are used for repair work or to thread installed pipe. In these cases, lighting in the installation workplace is limited, as is typical in new construction areas. Therefore, providing a light on the tool provides more consistent illumination of the workpiece. Due to the rotation of the die head during use, there are unique challenges in illuminating pipe compared to other power tool uses.

[0035] In addition, the present subject matter allows the user to start threading or start thread creation by pushing the tool instead of the die head. The present subject matter also provides a defined or dedicated area on the power drive tool for the user to push to start the thread cutting operation. This eliminates the need for additional protrusions or members attached or assembled to the tool to push thread cutting or engagement.

[0036] The present subject matter also provides a tool assembly that enables shorter overall length, higher overall mechanical efficiency, and utilizes more readily available gear technology to transmit the desired torque from the tool motor to the output gear of the tool.

[0037] Although various references to pipe threading and pipe threads are noted herein, it should be understood that the subject matter is not limited to forming or machining threads in pipes. Rather, the subject matter is applicable to forming or machining threads in a variety of workpieces other than pipes. Furthermore, although the subject matter is described with reference to a die head for threading operations, it should be understood that the subject matter can be used in conjunction with other tools and components.

[0038] In one embodiment, the present subject matter provides an assembly for actively engaging or disengaging threaded jaws of a power-driven tool from contact with a die, particularly a RIDGID 12-R die available from RIDGID Tool Company. It should be understood that while reference is made herein to various products available from RIDGID Tool Company, the present subject matter is not limited to these products, but is applicable to a wide range of other products and goods, including those available from other suppliers and manufacturers.

[0039] In today's market, power driver tools have at least one, and most have two, threaded jaws extending radially inward from the head of the tool. Figure 1AThese thread claws are shown as thread claws 12 in a representative RIDGID700 power driver 10 available from RIDGID Tool Company. The thread claws 12 extend radially inwardly from the head 11 of the power driver 10. Specifically, the thread claws 12 extend radially from a rotatably supported cylindrical wall 15. When the tool 10 is powered and actuated, the wall 15 and the thread claws 12 rotate. Figure 1B As shown, the threaded jaws 12 are spring biased and engage slots 22 in a removable and separable die 20 .

[0040] Because the jaws 12 are radially spring biased, the die 20 can be inserted into the tool opening or receiving area 14 of the tool 10. This insertion pushes the threaded jaws 12 radially outward to allow the die 20 to be fully installed with the tool 10. When installed, the threaded jaws 12 engage the threaded jaw grooves 22 of the die 20, thereby securely holding the die 20 with the tool 10.

[0041] According to the present subject matter, a power-driven tool and in particular a tool head of a power-driven tool includes one or more threaded claws extending radially inward from a tool opening. In addition, the power-driven tool and in particular the tool head also includes one or more release claws also extending radially inward from the tool opening. In many versions, the power-driven tool and in particular the tool head also includes a biasing spring also located within the capture region. Figure 2 and Figure 2A These aspects are shown in FIG. Figure 2 and Figure 2A An embodiment of a head 111 of a power-driven tool 110 is shown. The head 111 defines a tool opening or receiving area 114 that is configured, i.e., sized and shaped, to receive a die head as described herein. The power driver 110 includes one or more threaded claws 112 that can extend radially inward from the head 111 and from a rotatably supported cylindrical wall 115. The power driver 110 also includes one or more release claws 116 that can extend radially inward from the head 111. The claws 112 and 116 can also be retracted radially outward or retracted into the head 111 as described herein. In some versions, the power driver 110 also includes a bias spring 118 that is disposed within a capture area 119 defined in the head 111. These aspects are described in more detail herein.

[0042] In many versions, such as Figure 3 and Figure 3A As shown, the drive ring is used in combination with the tool head. Specifically, Figure 3 and Figure 3A The outer face 132 of an embodiment of the drive ring 130 is shown. The drive ring 130 is shown mounted and positioned in Figure 2The power driving tool 110 shown in FIG. 1 is mounted on a tool head 111. More specifically, a drive ring 130 is rotatably mounted on the tool head 111. The drive ring 130 is rotatably positioned between a first position and a second position. The drive ring 130 is connected to the threaded claw 112 and the release claw 116 ( Figure 2 14 and 15. The drive ring 130 is engaged with the tool opening 114 (shown) such that when the drive ring is positioned in the first position, the threaded claws 112 extend into the tool opening 114 and the release claws 116 are retracted from extending into the tool opening 114. When the drive ring 130 is positioned in the second position, the threaded claws 112 are retracted from extending into the tool opening 114 and the release claws 116 are extended into the tool opening 114. These positions and arrangements of the components are described in more detail herein.

[0043] Figure 4 and Figure 4A The inner face 134 of the drive ring 130 is shown, which faces the bias spring 118, the threaded claw 112 and the release claw 116 when assembled with the tool head 111. As will be understood, the outer face 132 (eg, Figure 3 As shown in FIG. 1 ) and the inner surface 134 of the drive ring 130 are opposite to each other. Figure 4 and Figure 4A As further shown, the drive ring 130 includes features that engage the bias spring 118, the threaded claw 112, and the release claw 116. Specifically, along the inner surface 134, the drive ring 130 includes a threaded claw groove 136, a bias spring piece 138, and a release claw groove 140. The release claw groove 140 includes a release claw extension and a stop portion 142. When the drive ring 130 is assembled with the tool head 111, the bias spring piece 138 engages Figure 2 A spring catch 139 is shown, which is fixed or otherwise engaged with the bias spring 118. Also on the assembly, portions or members of the pawls 112 and 116 are engaged with the slots 136 and 140, respectively, and in some versions are slidably received in the slots 136 and 140, respectively. These aspects are described in more detail herein.

[0044] When the user rotates the drive ring 130, the threaded claw groove 136 actively moves the threaded claw 112 of the tool 110 radially outward (or inward) through the cam profile of the groove 136. The cam profile of the groove 136 is described in more detail herein. In this way, when the drive ring 130 is fully rotated, the tool opening 114 is free of any threaded claws. In addition, as the drive ring 130 rotates, the bias spring 118 is compressed. Finally, when the drive ring 130 is fully rotated, the release claw 116 is allowed to extend into the tool opening 114. Due to the shape of the release claw extension and the stop portion 142 of the release claw groove 140, the release claw 116 then prevents the drive ring 130 from returning to its original position, despite the active bias spring force that is in contact with the bias spring leaf 138 of the drive ring 130.

[0045] Further references Figure 4 , the term "cam profile" of the threaded claw grooves 136 refers to the configuration or orientation of the grooves relative to the center 131 of the drive ring 130. Specifically, each groove 136 defines an inner end 136A, an outer end 136B, and groove walls 136C and 136D extending between the ends 136A and 136B. The inner end 136A is closer to the center 131 than the outer end 136B. The term "cam profile" refers to the geometric shape and generally arcuate profile of the groove walls 136C and 136D. It should be understood that when the drive ring 130 is assembled with the tool head 111, the radial position of the threaded claws 112 is controlled by the cam profile of the grooves 136. Although the subject matter includes a wide range of components and component configurations, in the described embodiments, each threaded claw 112 includes a protrusion or member 112A described in more detail herein, which is movably engaged with, slidably disposed in, or otherwise contacts or is guided by the threaded claw groove 136. Similarly, the release pawl 116 includes a protrusion or member 116A, also described in greater detail herein, which engages with, is slidably disposed in, or otherwise contacts or is guided by the release pawl slot 140. The bias spring 118 pushes the drive ring 130 toward the Figure 5A and Figure 5B The aforementioned first position shown in .

[0046] Reference Figure 5A In the normal operating position of the tool 110, ie the first position of the drive ring 130, the tool opening 114 appears as shown. Here, the threaded claws 112 only extend into the tool opening 114. Therefore, the release claws 116 do not extend into the tool opening 114. Figure 5B Also shown in FIG. 1 are the positions of the threaded claw 112 and the release claw 116 in their respective grooves of the drive ring 130 at the first position of the drive ring. Specifically, Figure 5A A drive ring 130 is shown mounted on the head 111 of the power driver 110 . Figure 5B The inner face 134 of the drive ring 130 is shown in this installed state. In this normal operating position of the tool 110, the threaded claws 112 extend radially into the tool opening or receiving area 114. In this operating position, the release claws 116 ( Figure 5A 114 ) is retracted and does not extend into the tool opening or receiving area 114 . Figure 5B The inner face 134 of the drive ring 130 is shown, as well as the positions of the threaded pawl members 112A and the release pawl members 116A within their respective grooves 136, 140. As previously described, each threaded pawl 112 includes a member 112A slidably received within the groove 136. In addition, the release pawl 116 includes a member 116A slidably received within the release pawl slot 140.

[0047] Reference Fig. 6A , counterclockwise rotation of the drive ring 130 (when looking at the tool 110) pulls the threaded claws 112 radially outwardly out of the tool opening 114 through the threaded claw grooves 136. The release claws 116 remain retracted relative to the tool opening 114. Figure 6B FIG. 1 shows the inner face 134 of the drive ring 130 in the installed state. In addition, due to the shape of the threaded claw groove 136 of the drive ring 130, i.e., the cam profile, as shown in FIG. Fig. 6A and Figure 6B Rotation of the drive ring is shown continuing to move the threaded jaws 112 radially outward to the outside of the tool openings 114 .

[0048] Reference Fig. 7A and Figure 7B When the drive ring 130 is fully rotated, overcoming the rotational bias caused by the bias spring 118 and its engagement with the tab 138 of the drive ring 130, another bias spring described herein urges the release pawl 116 to extend radially inwardly into the tool opening 114 via the release pawl extension and the stop portion 142 of the release pawl slot 140 of the drive ring 130. In this condition, i.e., the second position of the drive ring, the tool 110 is ready to receive a die, such as Figure 1B The die 20 shown. When the user inserts the die 20, such as the RIDGID 12-R die available from RIDGID Tool Company, into the tool opening 114, the die 20 contacts the release claw 116. The user continues to axially insert the die 20 into the tool opening 114 causing the release claw 116 to be pushed radially outward. This allows the release claw member 116A to exit the release claw extension and stop portion 142 of the release claw groove 140 of the drive ring 130. When this occurs, there is nothing to hinder the bias spring 118 (such as Figure 2 1 (shown) returns the entire drive ring 130 to the normal operating position, i.e., the first position. In doing so, the threaded claws 112 extend radially inwardly and contact the inserted die head 20. The mechanism cycle is completed, and the tool 110 can be used to transmit the rotational torque to the die head 20 to complete the required work.

[0049] In many embodiments, the distal end of the release claw is angled to enable or facilitate sliding along the axis of the release claw when in contact with the die. It should be understood that the distal end or distal surface of the release claw can have a different shape without affecting it. It is important that when the die is installed, the release claw translates linearly along its axis. Specifically, Fig. 7A The angled distal end 116B of the release pawl 116 is shown.

[0050] In the embodiments described herein, all of the pawls, i.e., the threaded pawls 112 and the release pawls 116, are optionally biased radially inwardly by light conical springs. These springs compensate for minor changes in the configuration or drive ring position during use. It should be understood that other spring types, sizes, or forces may be used. In some embodiments, no springs actively contact the pawls.

[0051] Although in the embodiments described herein the direction of rotation in relation to opening or unlocking the die area of ​​the tool is counter-clockwise, it should be understood that alternative embodiments may exist that use a different direction of rotation. This does not affect the present subject matter.

[0052] Although the die remains known in the market, there is no known one-handed 11-R mounting system for the RIDGID 11-R die available from RIDGID Tool Company. To reiterate, existing 11-R die systems do not detent in an "open" or "unlocked" position. Similar configurations described herein for the 12-R die can also be used for the 11-R die.

[0053] In another embodiment, at least one light is provided on the tool for illuminating the die and tube or other workpiece during use to improve visibility. In one embodiment, the tool features one or more lights, such as LEDs, mounted on the tool body and toward the tool opening. These aspects are Figure 8 1. Specifically, a power driven tool 110 is shown. The power driven tool 110 includes a head 111. The power driven tool 110 also includes one or more lights 150. The lights 150 are mounted or otherwise disposed on the tool body indicated at 152. The lights 150 are generally oriented toward the rotation axis of the head 111, such as Figure 8 Axis A is shown in FIG. By placing the lamp in this area, the lamp is protected and radially illuminates the tube or other workpiece for optimal visibility.

[0054] Reference Fig. 9 , most commercially available dies on the market are characterized by a large number of structural materials having multiple and in most cases four (4) openings. Specifically, Fig. 9 The previously described Figure 1B The die head 20 shown in FIG. Fig. 9 A plurality of openings 24 are shown arranged equidistantly around the perimeter of the die 20 .

[0055] Because of the limited openings in most commercial dies for passing radially directed light during use, the Figure 8It may be beneficial to have more than one lamp as shown. Although it should be understood that in many applications, one lamp is sufficient. However, as the opening rotates around the tube and light is intermittently blocked and allowed to pass, having only one lamp may create a stroboscopic effect. More than one lamp has the benefit of balancing the light that is blocked or allowed to pass. To reiterate, the lamps can be positioned so that light from at least one lamp is always or substantially passed through the die opening to the workpiece regardless of the die rotational position. Here, the stroboscopic effect can be minimized or eliminated.

[0056] In another embodiment, the subject matter provides a light ring or a portion of a light ring mounted coaxially with the die head. Here, a minimum of two lights can be used, and in many applications a greater number of lights can be used, such as four lights. In some applications, a minimum of eight lights can be used. These aspects are Fig. 10A and Fig. 10B shown in . Specifically, Fig. 10A A power tool 110 is shown with its head 111 extending from a tool body 152. The die 20 is engaged in the head 111. The power tool 110 includes lights 160 positioned around the head 111, and in particular around a tool opening or receiving area 114 of the tool 110, and directed to emit light toward the die 20. The lights 160 may be arranged in an annular, circular, or arcuate manner. Fig. 10B The die 20 and the light 160 disposed in the head 111 are further shown.

[0057] A plurality of lights arranged in a ring around the tool opening or receiving area 114 of the tool 110 provide improved lighting from all user angles and enable greater visibility of the tube as it moves axially into the die and die head.

[0058] It should be understood that the feature of this embodiment is as follows Fig. 10A and Fig. 10B A complete light ring is shown. However, one or more partial rings can be used and placed in one or more optimal locations for user visibility. Again, it may not be necessary to have the light ring extend below the die.

[0059] Other methods and assemblies for illuminating a tubular workpiece are also included in the present subject matter. In one embodiment, one or more lamps are mounted on a member extending from the tool parallel to the axis of the tubular or at an angle less than 90° to the axis of the tubular. In some embodiments, as Fig.14 As shown, the component is hinged and can be rotated against the tool body to a storage position when not needed, and then hinged outward to illuminate the tube. In other embodiments, the component is rigidly mounted to a Fig.14 Specifically, Fig.14The lighting assembly 170 is shown supported by a light pole 180. The light pole 180 is attached or otherwise secured to the power tool 110. As described above, the light pole 180 can be rigidly secured to the tool 110. Alternatively, in other versions, the light pole 180 can be selectively positioned relative to the tool 110. Fig.14 In the assembly shown, a light stem 180 having a longitudinal axis Q extends parallel or substantially parallel to the axis P of a tube or workpiece engaged in the tool head 111 of the tool 110 .

[0060] Another alternative embodiment for lighting the tube includes a flexible member that can be repositioned by the user to optimally illuminate the tube during use. Fig.15 shown in . Specifically, Fig.15 The lighting component 170 is shown supported by a flexible rod 180A. In this alternative embodiment, the lighting component 170 can be oriented at nearly any angle relative to the axis P of the pipe or workpiece and / or tool head 111.

[0061] In this embodiment, the user can modify or selectively position the flexible member to illuminate any preferred portion of the workpiece. The member is rigid enough to maintain position when released. Because the member is flexible, the member can be moved to a storage location when not needed and is less susceptible to damage during handling and transportation.

[0062] In another embodiment, a unique tool mechanical configuration or assembly is provided that modifies the conventional gear train layout. In existing hand-held power drivers, the motor is mounted longitudinally or coaxially with the tool spindle. This orientation is transverse or perpendicular to the axis of the tube workpiece. In order for the tool to rotate the die section and perform the work, the rotation axis must be rotated 90°. In some existing hand-held power drivers, this is accomplished by using a face gear in the last gear stage. This is Fig.11 Shown in.

[0063] Specifically, Fig.11 A conventional power driven tool 210 is schematically shown. The tool 210 includes a head 211 that provides a receiving area 214 having a rotating joint assembly, to which a component such as a die head can be attached and rotated about, for example, an X axis. The head 211 generally extends from a tool body 220 having a longitudinal axis Y. The tool 210 also includes a motor 230 that provides a powered rotational output 232. Typically, the rotational axis of the powered rotational output 232 is coextensive or parallel to the longitudinal axis Y. A gear train 240 transmits the rotational power from the output 232 to a face gear 250 at the head 211. The tool may also include a housing or casing. Thus, it will be understood that in this conventional assembly, the axis X is oriented at 90° relative to the axis Y.

[0064] In other existing hand-held threading machines, this 90° rotation of the rotating shaft is achieved through the use of bevel gears, worm gears or similar components.

[0065] According to another aspect of the present subject matter, the motor is oriented transversely to the tool body and parallel to the tubular workpiece axis. Fig.12 and Fig.13 One embodiment is shown in FIG. 1 . In this manner, simpler gear forms, such as spur or helical gears, can be used throughout the gear train, which can reduce costs. Similarly, this may make the overall mechanical efficiency of the gear train higher, allowing the tool to perform more work for a given amount of energy.

[0066] Specifically, Fig.12 An embodiment of a power driven tool 310 according to the present subject matter is schematically illustrated. The tool 310 generally defines a tool longitudinal axis Y. The tool 310 includes a head 311 extending from a tool body 320. The head 311 provides a receiving area 314 having a rotational engagement assembly, where a component such as a die head can be connected and rotated about, for example, axis X. Typically, the tool head 311 also includes a cylindrical wall 315 rotatably supported in the tool opening. The tool 310 also includes a motor 330 that provides a powered rotational output 332. The gear train 340 transfers the rotational power from the output 332 to a gear, such as a ring gear 350 in the head 311. The gear, such as the ring gear 350, is rotatably supported within the head 311. The tool 310 may also include Fig.12 The housing or casing that constitutes the tool body 320 and the head 311 is generally shown in dashed lines. Fig.12 In the embodiment of the present invention, the axis of the motor 330, i.e., the axis of the rotating output 332, shown as axis W, is parallel to the axis of rotation at the die, shown as axis X. In many versions, the axis of the motor 330 and its output 332, i.e., axis W, is transverse or perpendicular to the longitudinal axis of the tool, i.e., axis Y. As will be appreciated, rotation of the ring gear 350 causes rotation of the cylindrical wall 315 and components engaged therewith (not shown), such as the die (not shown).

[0067] Further references Fig.12, the gear train 340 generally includes a rotatable shaft 370 on which a gear 360 and another gear 380 are mounted. The gear train 340 also includes another rotatable shaft 372 on which a gear 362 and a gear 382 are mounted. The gear train 340 also includes another rotatable shaft 374 on which a gear 384 and another gear 364 are mounted. The rotational power from the motor 330 is transmitted to the shaft 374 through the motor shaft gear 333 mounted on the rotational output or shaft 332 of the motor 330. The power transmission from the shaft 332 to the shaft 374 is achieved by the mutual engagement of the gears 333 and 364. The transmission of rotational power from the shaft 374 to the shaft 372 is achieved by the mutual engagement of the gears 384 and 362. The transmission of rotational power from the shaft 372 to the shaft 370 is achieved by the mutual engagement of the gears 382 and 360. The transmission of rotational power from the shaft 370 to the ring gear 350 is achieved by the mutual engagement of the gears 380 and 350.

[0068] Fig.13 is from Fig.12 The line XIII-XIII in Fig.12 Schematic diagram of the motor 330, gear train 340 and ring gear 350. Fig.13 Also shown is the parallel orientation of the axis W of the motor 330 and its rotational output 332 with the axis X of the ring gear 350 . Fig.13 Also shown is an in-line orientation of at least one, more particularly two, and more particularly three, shaft and gear assemblies of the gear train 340. This feature is illustrated by at least one, particularly two, and more particularly three of the centers of the shaft and gear assemblies, represented by 340A, 340B, and 340C, being positioned aligned with the axes X and W, and in a particular variation; being oriented to be aligned and coincident with the longitudinal axis Y of the tool 310.

[0069] Fig.16 and Fig.17 Also shown are aspects of a head 111 of a power driver tool 110 in accordance with the present subject matter. Fig.16 It is a partial cross-sectional view of the head 111 . Fig.174 is an exploded assembly view of the head 111. The head 111 defines a receiving area 420 defined by an inner cylindrical wall 422 and a boss 424. The receiving area 420 is sized and shaped to receive the rotatable base 400 therein. The receiving area 420 includes an access opening 410 at which a gear member 425 powered by a drive train (not shown) of the tool 110 is exposed. As will be appreciated, when the base 400 is placed within the receiving area 420, the gear member 425 engages a gear face 405 defined along a face 404 of the base 400. The base 400 defines the aforementioned cylindrical wall 115. The base 400 also defines one or more holes 112D, which are sized and shaped to enable the threaded claw 112 to extend therethrough. The base 400 also defines one or more holes 116D, which are sized and shaped to enable the release claw 116 to extend therethrough. Each threaded claw 112 generally includes a biasing member, which can be in the form of a spring 112C. Each release claw 116 generally includes a biasing member, which can be in the form of a spring 116C. The size and shape of the spring 112C are designed to accommodate the protrusion 112A of the threaded claw 112. The size and shape of the spring 116C are designed to accommodate the protrusion 116A of the release claw 116. The drive ring 130 is positioned on the rotatable base 400 so that the base 400 is generally disposed between the drive ring 130 and the tool head 111. The face 132 of the drive ring points in a direction opposite to the face 404 of the base 400. The drive ring 130 is retained in the head 111 by an outer retaining ring 430 and an inner retaining ring 432. The bearing member 434 facilitates the rotation of the base 400 within the receiving area 420 of the tool head 111.

[0070] In many applications, a user may wish to apply an axial force to a power driven tool, particularly a tool head of such a tool. The present subject matter includes two representative embodiments that facilitate a user to apply such a force.

[0071] In one embodiment, a zone or area within the head profile of the tool is designated for applying force to axially initiate the process of cutting threads. This embodiment eliminates the need for the user to press and turn the die, and can be implemented in conjunction with the embodiments described herein involving locking die retention. This embodiment has the added benefit of not requiring any additional clearance space around the tool head. Therefore, there is no detriment to the user having this feature without sacrificing accessibility for use.

[0072] In another embodiment, an outwardly protruding member is provided on the tool head for receiving the axial force (if applied). Figure 5A , 6A, 7A, 8, 10A and 12, an outwardly projecting member such as a shoulder 400 extends from the distal-most region of the power driver 110, particularly the tool head 111. The shoulder 400 provides oppositely oriented surface areas 402 and 404 that provide an area or location for a user to conveniently apply force to the tool 110. In many versions, the shoulder 400 is integrally formed with the tool head 111 or is permanently fixed to the tool head.

[0073] The benefits of the die head retaining lock and unlock system include the following.

[0074] The die retaining lock and unlock system, a positive engagement and disengagement system, prevents unwanted and undesirable axial separation of the die from the power drive tool.

[0075] The die retention locking and unlocking system enables the user to initiate thread cutting by applying axial force to the power drive tool rather than to the rotating die.

[0076] The die head retaining lock and unlock system provides or enables easier separation of the die head from the power drive tool when it is necessary to remove the die head. This is because the threaded claws will not prevent the die head from being removed.

[0077] The die retention locking and unlocking system provides or enables easier, one-handed insertion of the die into a power driven tool when the system is held in the "open" position.

[0078] The die head retaining locking and unlocking system provides or enables the die head to be automatically locked during installation. Therefore, this reduces the installation time and prevents the situation of forgetting to lock.

[0079] The area of ​​the power drive tool used to push to start threading reduces the clearance required around the tool compared to other variations that feature a protrusion beyond the tool head. This enables the tool to be used in tighter areas.

[0080] A light on a power tool used to illuminate the die during use provides the benefits of more consistent illumination when workplace lighting may be minimal and better visibility for the user to recognize when threading is complete.

[0081] The motor location / orientation reduces overall tool length, improves operating efficiency, and can result in lower manufacturing costs.

[0082] Variations in the die lock and release are envisioned to accommodate the 11-R die. But the same premise exists: the release pawl will lock the drive ring in the "open" or "unlocked" position, and then the release pawl will move during die insertion, allowing the system thread pawl to engage the die again.

[0083] Many other benefits will undoubtedly become apparent from future applications and developments of this technology.

[0084] All patents, applications, standards, and articles mentioned herein are incorporated by reference in their entirety.

[0085] The present subject matter includes all operable combinations of features and aspects described herein. Thus, for example, if one feature is described in association with an embodiment and another feature is described in association with another embodiment, it will be understood that the present subject matter includes embodiments having a combination of these features.

[0086] As described above, the present subject matter solves many problems associated with previous strategies, systems and / or devices. However, it should be understood that those skilled in the art may make various changes to the details, materials and arrangements of the components described and illustrated herein to explain the nature of the present subject matter without departing from the principles and scope of the claimed subject matter as expressed in the appended claims.

Claims

1. A power-driven tool comprising: Tool body; a tool head extending from the tool body, the tool head defining an axially accessible tool opening, the tool head including a cylindrical wall concentrically and rotatably supported in the tool opening; at least one threaded jaw radially positionable to extend into said tool opening; at least one release pawl radially positionable to extend into said tool opening; a drive ring rotatably mounted on the tool head, the drive ring engaging the at least one threaded pawl and the at least one release pawl and rotatably positioned between (i) a first position in which the at least one threaded pawl extends into the tool opening and (ii) a second position in which the at least one threaded pawl is retracted from extending into the tool opening and the at least one release pawl is extended into the tool opening.

2. The power driving tool according to claim 1, wherein: The at least one release pawl defines an angled distal end.

3. The power driving tool according to claim 1, wherein: Upon positioning the drive ring to the first position, the at least one release pawl is retracted from extending into the tool opening.

4. The power driving tool according to claim 1, further comprising: A bias spring is mounted in the tool head and is configured to urge the drive ring to the first position.

5. The power driving tool according to claim 1, wherein: The power drive tool includes two threaded jaws radially positionable to extend into the tool opening.

6. The power driving tool according to claim 1, wherein: The drive ring includes at least one thread claw groove, wherein the at least one thread claw includes a thread claw member slidingly received in the at least one thread claw groove.

7. The power driving tool according to claim 1, wherein: The drive ring includes at least one release pawl groove, wherein the at least one release pawl includes a release pawl member slidably received in the at least one release pawl groove, wherein the at least one release pawl groove includes a release pawl extension portion and a stop portion.

8. The power driving tool according to claim 1, further comprising: At least one light is directed to emit light toward the tool opening.

9. The power driving tool according to claim 8, wherein: The at least one light is disposed on the tool head.

10. The power driving tool according to claim 9, wherein: The at least one light is positioned at least partially around the tool opening.

11. The power driving tool according to claim 8, wherein: The at least one light is disposed on the tool body.

12. The power tool of claim 1, further comprising: A shoulder extends from a distal-most region of the tool head, the shoulder providing an area for a user to apply force.

13. A power driven tool comprising: Tool body; a tool head extending from the tool body, the tool head defining an axially accessible tool opening, the tool head including a cylindrical wall concentrically and rotatably supported in the tool opening; at least one light oriented toward the axis of rotation of the tool head and directed to emit light toward the tool opening; at least one threaded jaw radially positionable to extend into said tool opening; at least one release pawl radially positionable to extend into said tool opening; a drive ring engaged with the at least one threaded pawl and the at least one release pawl and rotatably positioned between (i) a first position in which the at least one threaded pawl extends into the tool opening and (ii) a second position in which the at least one threaded pawl is retracted from extending into the tool opening and the at least one release pawl is extended into the tool opening.

14. The power tool according to claim 13, wherein: The at least one light is disposed on the tool head.

15. The power tool according to claim 14, wherein: The at least one light is positioned at least partially around the tool opening.

16. The power tool according to claim 13, wherein: The at least one light is disposed on the tool body.

17. The power tool according to claim 13, wherein: The at least one release pawl defines an angled distal end.

18. The power tool according to claim 13, wherein: Upon positioning the drive ring to the first position, the at least one release pawl is retracted from extending into the tool opening.

19. The power tool of claim 13, further comprising: A biasing spring is configured to urge the drive ring to the first position.

20. The power tool of claim 13, wherein: The drive ring includes at least one thread claw groove, wherein the at least one thread claw includes a thread claw member slidingly received in the at least one thread claw groove.

21. The power tool of claim 13, wherein: The drive ring includes at least one release pawl groove, wherein the at least one release pawl includes a release pawl member slidably received in the at least one release pawl groove.

22. The power tool of claim 21, wherein: The at least one release pawl groove includes a release pawl extension portion and a stop portion.

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