CROSS REFERENCE TO RELATED APPLICATIONS
None
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
None
REFERENCE TO A MICROFICHE APPENDIX
None
BACKGROUND OF THE INVENTION
The concept of foldable pocket utility tools is known in the art and such pocket utility tools typically include a pliers and a number of general purpose tools such as a can opener, a screw driver, a knife or a saw which make the pocket tool useful in an emergency, however, the general purpose tools, which are attached to the pocket tool, invariably do not perform as efficiently or effectively as a conventional standalone industrial tool. Consequently, pocket tools while generally useful are not necessarily desirable for a technician who uses specialty tools to perform field tasks. For example, in servicing a field system, such as an irrigation system, a service technician may carry a tool kit with multiple specialty tools which can be used in servicing the field system. Each of the tools have a specific function and are designed to conveniently and effectively perform a function. However, there are times when a service technician may encounter a need for his specialty tools but he may be not carrying the specialty tool kit. For example, the technician may notice that some adjustment to an apparatus of the field system may be necessary. If the tool kit with the specialty tools is not available the service technician must leave the job site and retrieve his specialty tool kit before the technician can make the necessary adjustments. The invention described herein allows the service technician to avoid delays in retrieving a tool kit and allow the service technician to efficiently perform on-the-go adjustments or minor repairs to the field system with a pocket field tool.
SUMMARY OF THE INVENTION
A foldable pocket field tool having a foldable pliers and a set of specialty field tool bits to enable the foldable pocket tool to be carried on a person and used on-the-go. While the foldable pocket tool does not include an actually specialty tool it does include a work head or tool bit that may be part of a set of field tools and more specifically a set of tool bits tool bits extendable or retractable into a handle and with each of the tool bits operable for efficiently performing a unique service tasks that may occur when installing or servicing a field system such as an irrigation system. Since the tool bits remain secured to the pocket tool the tool bits are available on demand. The specialty tool bits may include a one-piece two step tool bit for manually forming holes of different sizes and shapes, an elongated tool bit for clearing or cleaning a clogged passage, a cross driver for engaging and rotating a screw with a head having a cross slot and a hexagonal shaft for rotating engaging a female socket. The tool bits may be arranged to provide a two-part handle for use in manipulating an adjacent tool bit about a central axis as the tool bit is supported by the foldable pocket tool.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a front view of a pocket tool in an open condition;
FIG. 2 is a top view of the pocket tool of FIG. 1;
FIG. 3 is a perspective view of a two-step tool bit;
FIG. 4 is a side view of the two-step tool bit of FIG. 3;
FIG. 5 is front view of the two-step tool bit of FIG. 3;
FIG. 6 is an end view of the two-step tool bit of FIG. 3;
FIG. 6A is a top view of an article having holes formed by the two-step tool bit of FIG. 3;
FIG. 7 is a perspective view of a cross driver tool bit;
FIG. 8 is a front view of a cross driver tool bit;
FIG. 9 is a side view of a cross driver tool bit;
FIG. 10 is an end view of a cross driver tool bit;
FIG. 11 is a front view of a tool bit;
FIG. 12 is an end view of the tool bit of FIG. 11;
FIG. 13 is a front view of a hex driver tool bit;
FIG. 14 is an end view of the hex driver tool bit of FIG. 13;
FIG. 15 shows the pocket tool of FIG. 1 in a folded condition; and
FIG. 16 shows the pocket tool of FIG. 1 with conventional utility tools secured to the pocket tool.
DESCRIPTION OF THE PREFERRED EMBODIMENT
FIG. 1 shows a foldable pocket field tool 10 in a splayed condition with four different specialty tool bits pivotally mounted to the pocket field tool to enable the specialty tool bits to be used individually and without detachment from the pocket field tool. Pocket field tool 10 includes a pliers 28 with a first jaw 26 and a second jaw 27 with the jaws of the pliers supported in a pivoting relationship to each other by a common pivot pin 25. When in pliers mode handle 11 and handle 12 provide for opening and closing jaw 26 and 27. In the pliers mode the specialty tool bits as described hereinafter would normally be folded into compartments or tool bit channel in handles 11 and 12. FIG. 2 is a top view of the pocket tool of FIG. 1 showing tool bit channel 11a, which is located in handle 11, and tool bit channel 12a which is located in handle 12.
The jaws of the pliers 28 include a Vee shaped wire cutting blade 26a, which is located on jaw 26, and a Vee shaped wire-cutting blade 27, which is located on jaw 27. The jaws and wire cutters make the pliers useful for general field technician tasks including holding or cutting small objects such as a wire or the like. In the example shown in FIG. 1 the jaw 26 is supported on handle 12 by pivot pin 22 and the jaw 27 is supported on handle 11 by pivot pin 21.
FIG. 1 shows a set of specialty tool bits 13,14,15 and 16, which are positioned on the pocket field tool 10 so that a user has an extension or handle on each side of the tool bit where a portion of a two-part handle may be another tool bit. That is, the arrangement of the tool bits 13, 14, 15 and 16 creates a two-part tool bit handle for each tool bit where the handle for the tool bits are formed by other tool bits, the jaws of the pliers 28, handle 11 or handle 12. Thus a feature of the invention includes the use of tool bits with handles extending laterally outward from a central axis extending through the tool bit. FIG. 1 shows a central axis 13s extending from a one-piece tool bit 13, a central axis 14s extending from tool bit 14, a central axis 15s extending from tool bit 15 and a central axis 16s extending from a rigid driver tool bit 16 having a notch 16b for rotating mounting base from a stored condition to a working position.
To use driver tool bit 16 one can use tool bit 15 and tool bit 14 as part of a two-part handle as well as the jaw 26 and jaw 27 of the pliers 28 as the other part of the two-part handle. Similarly, to use tool bit 13 one can use tool bit 15 and tool bit 14 as a part of a two-part handle as well as the jaws 26 and 27 of the pliers 28. Using the two-part handles one can apply a radially distributed torque about a central axis through the tool bit.
To use tool bit 15 one can rotate tool bit 14 into a closed condition and use the handle 11 and the handle 12 which are on opposite sides of the tool bit 15 as a two-part handle to rotate the tool bit 15 about axis 15s. Similarly, to use tool bit 14 one can rotate tool bit 15 into a closed condition and use the handle 11 and the handle 12 as the two-part handle which is located on opposite sides of the tool bit 14 to rotate the tool bit 14 about central axis 14s. Thus, a feature of the invention is the positioning of the tool bits so that the two-part handles are located on opposite side of the tool bit and extend laterally outward from a central axis through the tool bit thus enabling one to apply torque to the tool bit from each side of the tool thus increasing the effectiveness of the tool. In addition, the use of the two-part handles also allows one to effectively exert an axial balanced downward pressure on the tool bit to maintain the tool bit in contact with the article being worked on.
Located at one end of pocket field tool 10 is a tool bit comprising a driver 16 having an elongated solid shaft with a hexagonal cross section and a mounting base 16a rotateable supported by a pivot pin 23. The driver 16 is foldable into a concealed condition within handle 12 when not in use. FIG. 15 shows the pocket field tool 10 in a closed condition with the elongated shaft of driver 16 folded into the handle 12. Located on the other end of pocket tool 10 is a two-step tool bit 13 having a mounting base 13a pivotally mounted on pivot pin 20. FIG. 3 shows an isolated perspective view of the two-step tool bit 13 for manually forming openings of different sizes and shapes through hand manipulation of the pocket field tool while FIG. 4 and FIG. 5 show the two-step tool bit 13 in front and side views while FIG. 5 shows an end view. Tool bit 13 includes a flat rectangular shaped base 13a having an opening 13h for pivotally mounting base 13a to a pivot pin 20 of foldable pocket field tool 10. Located on edge of base 13a and extending there across is a lateral notch 13g that allows a user to rotate the tool bit 13 from a closed condition to an open condition by inserting a finger nail into lateral notch 13g and rotating the tool bit 13 out of a stored condition within the handle 11 of the pocket tool. Tool bit 13, although having a fixed shape allows one to manually form holes of different shape and different sizes in a material, for example a sheet of plastic, a pipe or other material. FIG. 5 shows the tool bit 13 includes a first hole forming member having a circular shaft 13d of diameter D1 with a conical tip 13e terminating at 13f to form a pointed piercing member that expands the material while forming a hole rather than punching an opening through the material. Tool bit 13 includes a second non-circular shaft 13L extending from a transverse base 13m of circular shaft 13d with shaft 12L having a first rectangular flat 13b extending along one side and a second rectangular flat 13c extending along an opposite side with the flat 13a and flat 13b located in a parallel condition to each other to form an oblong shape. FIG. 4 shows the width D1 of a working face 13d and 13c are the same as the diameter D1 of the shaft 13d of the two-step tool bit are the same. While FIG. 4 shows the width from flat 13a to flat 13b is D1 in a transverse direction FIG. 5 shows the tool bit 13 with shaft 13c having a dimension D2 with dimension D2 greater than dimension D1 of shaft 13d.
In one phase of operation of tool bit 13 one penetrates an object with a first portion of a pointed tool bit having a cylindrical shaft 13d having a first diameter D1 to form a cylindrical opening of a first size and by continuing to penetrate the object with a second portion of the tool bit having a non-circular shaft 13c having at least a portion having a greater cross sectional dimension than the diameter D1 of first portion of the tool bit one can form an enlarged opening having an elongated non-circular shape 14b as shown in FIG. 6A.
In hand operation of the tool bit 13 of FIG. 3 the base 13a, which is supported on a pivot pin 20 of the folding pocket member 10, allows the user to grip handle 11 as well as the two-part handle formed by tool bit 14, tool bit 16 and pliers 28 to thereby form a two-part handle that extends transverse to an axis of the tool bit which allows one to apply both an axial and a rotational force to the tool bit 13 thereby enabling the service technician to form holes of different size and shape all without the aid of power tools and or multiple drill bits. Using tool bit 13 one can form a first hole in an object having a diameter D1, for example a polymer plastic pipe, by grasping the handle 11 and applying axial force to tool bit 13 to force conical tip 13e and shaft 13L through the pipe until the pipe encounters base 13m which acts as an axial stop to limit further axial penetration of tool bit 13. By limiting the axial insertion to shaft 13d one can make a hole having a diameter D1 equal to the diameter of shaft 13d . To make a larger hole of a different shape one continues to exert axial force on tool bit 13 to force the stepped section 13c through the material thus creating a non-circular hole or oblong hole with a dimension D1 in one direction and D2 in a transverse direction. Thus, tool bit 10 can be hand manipulated to make two different size holes by manually controlling the axial penetration of the tool bit 13. A further feature of tool bit 13 is that one can make a hole of a third size, without an additional bit, that is by rotating tool bit 13 and member 13d one can form a circular opening having a diameter D2 in the material which is larger than the diameter D1 of the first member. To illustrate the shape and sizes of holes hand formable with tool 13 reference should be made to FIG. 6A which shows a first circular hole 14a of diameter D1, an oblong hole with a maximum dimension D2 and a minimum dimension D1 and a third circular hole having a diameter D2.
As shown in FIG. 1 pocket field tool 10 includes a one-piece cross driver tool bit 15 which is shown in isolated view in FIGS. 7,8,9 and 10. Tool bit 15 includes a planar mounting base 32a rotateable mounted to pivot pin 21 with base 32a having the same thickness as throughout. Extending from base 32a is an elongated shaft 31 having a head 30a thereon with a blunt end 31b and a base 31a for engaging a pivot pin of a pocket tool. Head 30a has a first lobe 33 and a second lobe 34 with a first rigid ear 35 having a first face 35a and a second face 35b extending laterally outward from one side of head 30a and a second rigid ear 36 having a first face 36a and a second face 36b extending laterally outward from the opposite side of head 30a to form a cross driver 30 rotationally engageable with an article having a cross slot, for example in an apparatus such as an irrigation valve. A feature of cross driver tool bit 30 is that head 30a may be formed by swaging edge portions of the end of shaft 31.
A reference to FIG. 11 and FIG. 12 reveals a multipurpose bit 14 comprising an elongated rigid cylindrical rod or pin having a mounting base 14a with a hole 14b therein for rotateable mounting base 14a to pocket field tool 10 though pivot pin 21 (FIG. 1). FIG. 1 shows multipurpose bit 14 extending outward from the tool. Multipurpose bit 14 may be used for a variety of functions including cleaning out existing holes or passages in pipelines or other functions such as checking depths of blind holes. A lip 14c permits for engaging mounting base 14a to rotate tool bit 14 from a stored condition.
FIG. 16 illustrates how other utility tools such as a can opener 52, a Phillips screwdriver, a knife 51 and a saw 50 may be attached to the pocket field tool without departing from the spirit and scope of the present invention and FIG. 15 shows the pocket field tool 10 in a folded condition where the tools and tool bits are concealed within the handles 11 and 12 of the pocket field tool 10.
Patent Application
20150082953
