WO2019135968A1 - Appareil de poignée d'extension d'outil électrique et procédé d'utilisation - Google Patents

Appareil de poignée d'extension d'outil électrique et procédé d'utilisation Download PDF

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Publication number
WO2019135968A1
WO2019135968A1 PCT/US2018/067550 US2018067550W WO2019135968A1 WO 2019135968 A1 WO2019135968 A1 WO 2019135968A1 US 2018067550 W US2018067550 W US 2018067550W WO 2019135968 A1 WO2019135968 A1 WO 2019135968A1
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WO
WIPO (PCT)
Prior art keywords
handle
power tool
receiver
leg
pivot
Prior art date
Application number
PCT/US2018/067550
Other languages
English (en)
Inventor
Brian Paul NIX
William Paul SEIDEL
Original Assignee
Uber Nikeo, LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Uber Nikeo, LLC filed Critical Uber Nikeo, LLC
Publication of WO2019135968A1 publication Critical patent/WO2019135968A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/005—Auxiliary devices used in connection with portable grinding machines, e.g. holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/18—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like
    • B24B7/182—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like for walls and ceilings
    • B24B7/184—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like for walls and ceilings pole sanders

Definitions

  • the subject of this patent application relates generally to tools, and more particularly to extension handles configured for selectively engaging power tools.
  • U.S. Patent No. 6,558,235 to Berg et al. discloses an ergonomic sander handle for clamping onto a sanding device so that the ergonomic handle can be comfortably gripped by a worker and used to apply the sanding device to a surface.
  • the ergonomic handle includes an elongate body, a clamp head and a bearing.
  • the elongate body is typically a cylindrical aluminum tube with padding for easy and comfortable gripping.
  • One end of the elongate body is attached to the clamp head that attaches to the sanding device.
  • the other end of the elongate body is attached to the bearing which may include a pair of roller balls.
  • the worker grips the elongate body in a power grip (without significant wrist flexion or deviation) and applies pressure to urge the sanding device and the bearing onto the surface.
  • the power grip minimizes loads on the wrist and hand which reduces the likelihood of musculoskeletal trauma.
  • a further example of a sander extension handle attachment relates to the ability to adjust the speed control of the sander from the extension handle, as disclosed in U.S. Patent Application Pub. No. US2004/0147209 to Bickford et al., directed to an extension device for palm sanders, consisting of a rigid extension, on which is mounted a housing.
  • the sander fits into a recess in the housing and is held in place by a pair of clamps, mounted on the housing.
  • the housing contains a remotely operated lever, which controls the speed of the sander, by depressing the sander’s own speed control. This lever is linked to another lever, which is located at the end of the extension opposite the housing.
  • the device allows the operator to safely sand large objects or structures that would otherwise require extensive use of ladders and scaffolds, thus preventing undue hazards to the worker.
  • the sander is at any time detachable and requires no alteration in order to attach it to the device.
  • U.S. Patent Application Pub. No. US2003/0096565 to Dotta discloses a handle for an orbital sander (10) of the type having a dust extractor (17) containing an exhaust outlet (18), the handle having: a first part in the form of an elongate tubular member (19) having two open ends, one end being attachable to the exhaust outlet (18) to attach the handle to the sander and to allow dust to pass through the first tubular member, the other end being attachable to a dust discharge hose (22), a second part which is extendable over the top of the sander, attachment means (28) to allow the handle (33) to be attached to a pole, and guide means (34) extending from a portion of the handle spaced from the sander, the guide means being adapted to contact the surface to be sanded and functioning to hold the handle (33) relative to the surface such that, when attached to the
  • U.S. Patent Application Pub. No. US2006/0073777 to Dotta et al. discloses an assembly attachable to an orbital sander of the type having a dust extractor containing an exhaust outlet, the assembly comprising mounting means to allow an extension pole to be attached to the assembly, the extension pole being substantially hollow and defining an internal exhaust passageway, and a conduit extending from the extension pole and operatively associated with the exhaust outlet of the orbital sander such that exhaust from the orbital sander passes through the conduit and through the internal exhaust passageway in the extension pole.
  • a still further example relates to the ability to attach multiple orbital or palm sanders to a single extension handle as disclosed in U.S. Patent No. 9,333,615 to Johnson, directed to an apparatus for mounting one or two handheld type orbital sanders thereto so as to permit a user to sand a floor surface from a standing position while moving the mounted sander(s) to and fro by way of a broom handle extending from the apparatus.
  • the apparatus includes one fixed mount and one moveable mount. Each mount is configured to facilitate attachment to an orbital sander.
  • the moveable mount can be placed and secured in one of two positions: a first position that centers a single sander in line with the handle; and a second position wherein the fixed mount is located to one side of the handle and the moveable mount is secured essentially an equal distance on the other side of the handle.
  • U.S. Patent No. 5,074,081 to Beth et al. discloses a sander with removable auxiliary handle for facilitating sanding in corners
  • U.S. Patent No. 6,669,543 to Price et al. is directed to a power tool such as a sander having interchangeable handle grips
  • U.S. Patent Application Pub. No. US2008/0085664 to Weiford et al. discloses a sander with a pivotally coupled head assembly on the handle assembly.
  • the apparatus comprises a clamp assembly comprising a clamp body having a first leg and an offset second leg, the first leg having a first pivot and a first retainer and the second leg having a second retainer, the clamp body further having a handle receiver, and a strap assembly comprising a strap body having a pivot end and an opposite retainer end, the strap assembly further comprising a pivot buckle secured on the pivot end of the strap body and pivotally engaged with the first pivot for selective engagement with the first retainer and a retainer clip at the retainer end of the strap body for selective engagement with the second retainer so as to secure the strap assembly on the clamp assembly and thereby mount the apparatus on the power tool.
  • the handle receiver and/or the handle mount is configured for pivotal engagement with the clamp body of the clamp assembly of the apparatus so as to allow for selective angular orientation of the extension handle relative to the clamp assembly and thus the power tool.
  • any such handle receiver and/or handle mount is integrated with the power tool.
  • Figure 1 is a perspective view of an exemplary power tool extension handle apparatus, in accordance with at least one embodiment
  • Figure 2 is an exploded perspective view thereof, in accordance with at least one embodiment
  • Figure 3 is a front view thereof, in accordance with at least one embodiment
  • Figure 4 is a back view thereof, in accordance with at least one embodiment;
  • Figure 5 is a left side view thereof, in accordance with at least one embodiment;
  • Figure 6 is a right side view thereof, in accordance with at least one embodiment
  • Figure 7 is a top view thereof, in accordance with at least one embodiment
  • Figure 8 is a bottom view thereof, in accordance with at least one embodiment
  • Figure 9 is a perspective view thereof as in use with a palm sander and an extension handle, in accordance with at least one embodiment
  • Figure 10 is a reduced scale further perspective view thereof as in use with a palm sander and an extension handle, in accordance with at least one embodiment
  • Figure 11 is a perspective view of an alternative exemplary power tool extension handle apparatus, in accordance with at least one embodiment
  • Figure 12 is a reduced scale perspective view thereof as in use with a palm sander and an extension handle, in accordance with at least one embodiment
  • Figure 13 is a perspective view of a further alternative exemplary power tool extension handle apparatus, in accordance with at least one embodiment
  • Figure 14 is a perspective view of a still further alternative exemplary power tool extension handle apparatus, in accordance with at least one embodiment
  • Figure 15 is a perspective view thereof as in use with a palm sander, in accordance with at least one embodiment
  • Figure 16 is a perspective view of a still further alternative exemplary power tool extension handle apparatus as in use with a palm sander and an extension handle in a first operational mode, in accordance with at least one embodiment;
  • Figure 17 is a partial perspective view thereof as in use with a palm sander and an extension handle in a second operational mode, in accordance with at least one embodiment;
  • Figure 18 is a perspective view of a still further alternative exemplary power tool extension handle apparatus as in use with a palm sander and an extension handle in a first operational mode, in accordance with at least one embodiment
  • Figure 19 is a partial perspective view thereof as in use with a palm sander and an extension handle in a second operational mode, in accordance with at least one embodiment
  • Figure 20 is a partial perspective view thereof as in use with a palm sander and an extension handle in a third operational mode, in accordance with at least one embodiment
  • Figure 21 is a perspective view of a still further alternative exemplary power tool extension handle apparatus integrated with a palm sander and in use with an extension handle in a first operational mode, in accordance with at least one embodiment
  • Figure 22 is a perspective view of a still further alternative exemplary power tool extension handle apparatus integrated with a palm sander and in use with an extension handle in a first operational mode, in accordance with at least one embodiment
  • Figure 23 is a perspective view thereof as integrated with a palm sander and in use with an extension handle in a second operational mode, in accordance with at least one embodiment
  • Figure 24 is an exploded perspective view thereof, in accordance with at least one embodiment
  • Figure 25 is a perspective view of a still further alternative exemplary power tool extension handle apparatus integrated with a palm sander and in use with an extension handle in a first operational mode, in accordance with at least one embodiment;
  • Figure 26 is an exploded perspective view thereof, in accordance with at least one embodiment;
  • Figure 27A is a cross-sectional view thereof taken along line 27A-27A in Fig. 25, in accordance with at least one embodiment
  • Figure 27B is an exploded cross-sectional view thereof, in accordance with at least one embodiment
  • Figure 28 is a perspective view of a still further alternative exemplary power tool extension handle apparatus integrated with a palm sander and in use with an extension handle in a first operational mode, in accordance with at least one embodiment
  • Figure 29 is a perspective view of a still further alternative exemplary power tool extension handle apparatus integrated with a palm sander and in use with an extension handle in a first operational mode, in accordance with at least one embodiment
  • Figure 30 is an exploded perspective view thereof, in accordance with at least one embodiment
  • Figure 31 is a perspective view of a still further alternative exemplary power tool extension handle apparatus integrated with a palm sander and in use with an extension handle in a first operational mode, in accordance with at least one embodiment
  • Figure 32 is a perspective view of a still further alternative exemplary power tool extension handle apparatus integrated with a palm sander and in use with an extension handle in a first operational mode, in accordance with at least one embodiment.
  • inventive subject matter provides many exemplary embodiments of the inventive subject matter. Although each embodiment represents a single combination of inventive elements, the inventive subject matter is considered to include all possible combinations of the disclosed elements. Thus, if one embodiment comprises elements A, B, and C, and a second embodiment comprises elements B and D, then the inventive subject matter is also considered to include other remaining combinations of A, B, C, or D, even if not explicitly disclosed.
  • FIGs. 1 and 2 there are shown perspective views of an exemplary embodiment of a power tool extension handle apparatus 20 according to aspects of the present invention.
  • the apparatus 20 comprises, in the exemplary embodiment, a clamp assembly 30 configured for engagement about at least a portion of a power tool P (Fig. 9) and for removable acceptance of a broom-style extension handle E (Fig. 9) so as to extend the reach of the power tool P during use.
  • the clamp assembly 30 generally comprises a clamp body 32 having offset first and second legs 42, 52 extending therefrom, together defining a relatively curved inner surface 34 here fashioned to substantially conform specifically to the neck N area of the palm sander power tool P (Fig. 9), though again appreciating that other tools and thus other geometries and configurations of the clamp assembly 30 may be employed according to aspects of the present invention.
  • legs 42, 52 are shown as being fixed to and integral with the clamp body 32, it will be appreciated that such components may be separately formed and assembled together, for example, as by mounting the legs 42, 52 on the clamp body 32 so as to pivot or articulate relative thereto, thereby further accommodating a range of power tools and sizes.
  • a handle receiver 62 for selective receipt of an extension handle E (Fig. 9).
  • the handle receiver 62 is specifically shown as having formed therein a single, central receiver threaded hole 64 for threadable receipt of a conventional broom handle-style extension handle E, though those skilled in the art will appreciate that other engagement means now known or later developed, including but not limited to press- or interference-fit, locking, snap, clip or clamp, and bayonet-type engagements, may be employed. As will be appreciated with reference to the alternative exemplary embodiments discussed further below in connection with Figs.
  • handle-mounting arrangements now known or later developed are possible, including but not limited to the incorporation of multiple receiver threaded holes 64, one or more receiver legs 66, one or more receiver pivots 68, a receiver ball 67 and related receiver socket 71 , one or more handle mount pins 150, an offset handle mount slot 152 and bolt 154, and/or a custom extension handle 130 and handle mount 142, a number of such alternative embodiments providing for not only alternative means of selectively engaging the extension handle E, 130 with the clamp body 32 but also enabling selective pivoting of the handle E, 130 relative to the clamp body 32 in one or more directions.
  • FIG. 1 In still further alternative embodiments as shown and described further below in connection with Figs.
  • handle-mounting arrangements may instead be incorporated or integrated directly into the power tool P.
  • a conventional broom-style handle E is shown and described here in connection with the exemplary embodiment and the alternative custom extension handle 130 is also shown as being substantially annular and straight, it will be appreciated that a wide variety of other handles, now known or later developed, may be employed in connection with any such apparatus 20 and any related mounting means, including curved or angled handles and telescoping handles.
  • the handle receiver 62 like the legs 42, 52, though here shown as formed integrally with the clamp body 32, may also be a separate component mounted or engaged with the clamp body 32, as will be appreciated from the further exemplary embodiments shown and described further below in connection with Figs. 13-15 and 18-20, or may be incorporated or integrated with the power tool P, directly or indirectly, as shown and described even further below in connection with Figs. 21-32.
  • a strap assembly 80 is provided to secure the clamp assembly 30 on the power tool P, generally comprising a strap body 82 having a pivot end 83 and an opposite retainer end 84, with a pivot buckle 92 removably and slidably engaged on the strap body 82 substantially at the pivot end 83.
  • the pivot buckle 92 is here shown as comprising opposite or offset first and second buckle walls 94, 98 interconnected by one or more buckle slats 102.
  • the pivot buckle 92 has three buckle slats 102 and thus has two gaps or buckle slots 103 therebetween.
  • the pivot end 83 of the strap body 82 may be threaded through the pivot buckle 92 as by passing through one buckle slot 103, around one or more buckle slats 102, and back through one or both buckle slots 103.
  • the particular configuration of the pivot buckle 92 and the engagement therewith of the strap body 82 is merely illustrative and non-limiting and that a variety of other arrangements now known or later developed may be employed according to aspects of the present invention without departing from its spirit and scope.
  • the strap assembly 80, and the strap body 82 may be integral with the clamp body 32 of the clamp assembly 30 at one or both ends and so not require a pivot buckle 92 or the like for engagement of the strap assembly 80 with the clamp assembly 30.
  • the first and second buckle walls 94, 98 of the pivot buckle 92 may be formed with substantially offset and aligned respective first and second buckle wall pivot holes 95, 99 and respective first and second buckle wall retainer holes 96, 100.
  • the first and second buckle wall pivot holes 95, 99 cooperate with a first pivot 44 formed on the first leg 42 of the clamp body 32 of the clamp assembly 30 to pivotally mount the pivot buckle 92 and thus the strap assembly 80 on the clamp assembly 30.
  • a pivot bolt 46 passes through the first buckle wall pivot hole 95, then through a clamp pivot hole 45 formed in the first leg 42 of the clamp body 32, and next through the opposite second buckle wall pivot hole 99 and is there secured through engagement of a screw 47 at its opposite end, thus forming the first pivot 44 and enabling the pivot buckle 92 to pivot thereabout.
  • first and second buckle wall retainer holes 96, 100 cooperate with a first retainer 49 formed on the first leg 42 of the clamp body 32 of the clamp assembly 30 to selectively secure or retain the pivot buckle 92 substantially adjacent to the clamp body 32 and thus the strap assembly 80 in a relatively shortened or tightened position on the clamp assembly 30.
  • the first retainer 49 is defined by at least one spring-bearing 50 formed on the first leg 42 of the clamp body 32 so as to protrude outwardly therefrom for selective engagement with one or more of the first and second buckle wall retainer holes 96, 100.
  • opposing spring-bearings 50 are formed on opposite sides of the clamp body 32 so as to define the first retainer 49 for selective engagement with the respective first and second buckle wall retainer holes 96, 100 of the pivot buckle 92 when it is pivoted inwardly toward the clamp body 32 about the first pivot 44.
  • a retainer clip 112 is formed or affixed at the strap retainer end 84 and configured to selectively and removably engage a second retainer 59 formed on the second leg 52 of the clamp body 32.
  • the retainer clip 112 is configured as a frame 114 secured on the strap body 82 as by looping its retainer end 84 through and about the frame 114 and securing it back onto itself as through stitching 86, leaving particularly one end or edge in the form of distal retainer member 116 exposed and free to engage the second retainer 59 here formed as an outwardly-protruding retainer flange 60.
  • the retainer clip 112 may simply be engaged with the second retainer 59 as by clipping the distal retainer member 116 of the retainer clip 112 behind the retainer flange 60, such that as the strap assembly 80 is then tightened as by adjusting the pivot end 83 of the strap body 82 relative to the pivot buckle 92 and then pivoting the pivot buckle 92 about the first pivot 44 and securing it against or adjacent to the first leg 42 of the clamp body 32 through engagement with the first retainer 49, the power tool extension handle apparatus 20 may thus be removably secured about a power tool P (Fig. 9) or the like as by clamping such power tool P between the clamp assembly 30 and the strap assembly 80.
  • a power tool P Fig. 9
  • one or more transverse slits or other holes may be formed in the retainer end 84 of the strap body 82 for selective engagement with the second retainer 59 formed on the clamp body 32, rather than affixing the separate retainer clip 112 to the strap body 82 as in the exemplary embodiment shown and described. It will be appreciated, whether or not the clamp body 32 and the legs 42, 52 thereof are adjustable, that the incorporation of a flexible strap body 82 within an overall strap assembly 80 that is adjustable as to length and tension as herein described yields a substantially universal power tool extension handle apparatus 20 according to aspects of the present invention for accommodation of a variety of power tools and the like.
  • the strap body 82 in such an arrangement with a tightening or cinching mechanism such as the exemplary pivot buckle 92 may be formed of any flexible, substantially non-elastic material now known or later developed, including but not limited to nylon, polyester, polypropylene, or any blends thereof.
  • the clamp body 32, pivot buckle 92, and retainer clip 112 may be formed of any suitable material and by any suitable process now known or later developed, including but not limited to metals such as steel, aluminum, alloys, and the like and a variety of plastics such as polypropylene, polystyrene, polyvinyl chloride (“PVC”), acrylonitrile butadiene styrene (“ABS”), polyethylenes such as high density polyethylene (“HDPE”) and low density polyethylene (“LDPE”), polycarbonate, polyurethane, and other such plastics, thermoplastics, thermosetting polymers, and the like, any of which being formed as by machining, molding, casting, extruding, stamping, etc.
  • plastics such as polypropylene, polystyrene, polyvinyl chloride (“PVC”), acrylonitrile butadiene styrene (“ABS”), polyethylenes such as high density polyethylene (“HDPE”) and low density polyethylene (“LDPE”), polycarbon
  • the strap assembly 80, and strap body 82 specifically, is instead formed with its pivot or first end 83 integral with the first leg 42 of the clamp body 32 (not shown)
  • a strap body 82 may be formed of a flexible and somewhat elastic material such as stretchable fabric or rubber so as to provide selective adjustment and tension of the strap assembly 80 by selectively varying the temporary attachment of the retainer end 84 of the strap body 82 at the opposite second leg 52 of the clamp body 32, such as by forming one or more second retainers 59 on the second leg 52 and/or one or more transverse slits or holes (not shown) or the like in the retainer end 84 of the strap body 82 for selective engagement with the one or more second retainers 59 of the clamp body 32, on which basis it will be appreciated that the tension on the strap assembly 80 may be adjusted based on the selective engagement of the free retainer end 84 of the strap body 82 with the second leg 52 of the clamp body 32.
  • a clamp pad 72 may be provided on the clamp inner surface 34 as shown to further accommodate some variance in the configuration or surface of the power tool P and provide a bit of cushioning opposite the strap 82; accordingly, such pad 72 may be formed of any resilient material now known or later developed, including but not limited to polyurethane foam, polyethylene foam, expanded polystyrene foam, expanded polypropylene foam, expanded polyethylene foam, silicone rubber, ethylene propylene diene monomer (“EPDM”), fluoroelastomer, and neoprene.
  • EPDM ethylene propylene diene monomer
  • the power tool extension handle apparatus 20 is arranged with the buckle 92 or fixed or pivot end 83 of the strap body 82 at the first leg 42 of the clamp body 32 and the free or retainer end 84 of the strap body 82, and thus the second retainer 59, at the second leg 52 of the clamp body 32, so as to be on the left and right sides of the clamp body 32, respectively, as viewed from the rear (Fig.
  • any such features or aspects of the clamp assembly 30 and the overall apparatus 20 may be flipped in one or more respects so as to be on opposite or different sides without departing from the spirit and scope of the invention.
  • the handle receiver 62 may instead be incorporated or integrated into the power tool P itself.
  • Figs. 3-8 there are shown orthogonal views of the exemplary power tool extension handle apparatus 20 of Figs. 1 and 2. While merely illustrative and non- limiting and again noting that the drawings are schematic in nature and are not to be taken literally or to scale or to represent any exact dimensions, the apparatus 20 being subject to variations in configuration and simple scaling up or down, in the exemplary embodiment the overall dimensions of particularly the strap 82 are approximately three-quarter inch (3/4 in.) wide and eight inches (8 in.) long and of the clamp body 32 approximately three inches (3 in.) wide and long and approximately three-quarter inch (3/4 in.) deep in the region of the legs 42, 52, though again it will be appreciated that a variety of other dimensions are possible.
  • the strap 82 may be in the range of one-half to one inch (1/2 - 1 in.) wide and in the range of six to ten inches (6 - 10 in.) long and the overall dimensions of the clamp body width and/or length may be in the range of two to four inches (2 -4 in.).
  • the overall dimensions of the clamp body width and/or length may be in the range of two to four inches (2 -4 in.).
  • the handle receiver 62 may be at an angle A relative to the clamp body 32, here nominally approximately thirty degrees (30°), though again it will be appreciated that for design, ergonomic, or other reasons such angle A of the handle receiver 62 may vary and so may be in the range of fifteen to forty-five degrees (15 - 45°), for example - and this assumes a rigid handle receiver 62 and thus a fixed angle A, though it will be appreciated from other exemplary embodiments shown and described herein below in connection with Figs. 13-20 and 22-32, alternative arrangements are contemplated wherein the angle of the handle receiver 62 or of the handle E, 130 or the handle mount 142 relative to the clamp body 32 or the power tool P itself may be adjustable in one or more planes.
  • the length of the handle receiver 62 may also vary, in part depending on the particular engagement means of the extension handle E therewith, here in the exemplary embodiment again being a threaded hole 64 and so the receiver 62 being of sufficient length for the hole 64 to be of sufficient depth for threaded engagement with a broom handle or the like - typically, such hole 64 or such threaded engagement would be on the order of one inch (1 in.), though again may vary.
  • the clamp body 32 and associated first and second legs 42, 52 once more together define a curved profile that is to substantially conform to the feature of the power tool P on which the apparatus 20 is to be selectively attached; again, in the exemplary embodiment as shown in Fig.
  • such is the substantially rounded neck N area of the palm sander power tool P. More particularly, taking the nominal diameter of the neck N to be in the range of two to three inches (2 - 3 in.), it follows that the curvature of the inner surface 34 of the clamp body 32 would have a radius on the order of one to one-and-a-half inches (1 - 1-1/2 in.). As also can be seen in the top and bottom views of Figs.
  • the offset legs 42, 52 defining the perimeter or profile of the clamp body 32 may be of sufficient length to seat against a portion of the power tool neck N but not necessarily even a full half circle or one hundred eighty degrees (180°) thereabout; in the exemplary embodiment the clamp body 32 may encompass about one hundred thirty-five degrees (135°) of the neck N circumference, with the rest enclosed by the strap 82, though it will be appreciated that the clamp body 32 may generally be configured to circumferentially encompass on the order of one quarter to one half (1/4 - 1/2) of the feature or to span approximately ninety to one hundred eighty degrees (90 - 180°) of the overall circumference, with again the remainder being selectively enclosed by operation of the strap assembly 80.
  • the apparatus 20 and its components such as the clamp assembly 30 and the strap assembly 80 are possible according to aspects of the present invention without departing from its spirit and scope.
  • the exemplary power tool extension handle apparatus 20 of Figs. 1-8 is here shown in use as being mounted on a palm sander power tool P and having a broom handle-style extension handle E threadably engaged with the handle receiver 62.
  • the power tool P generally comprises a head H, an opposite base B, and a relatively smaller or narrower“necked down” portion or neck N intermediate the head H and base B.
  • the clamp assembly 30 and the strap assembly 80 of the apparatus 20 are cooperatively installed about the neck N so as to temporarily secure the apparatus 20 on the power tool P as described above.
  • the apparatus 20 is installed oriented with the handle receiver 62 angled upwardly relative to the sander power tool P in its normal operational orientation wherein its vibrating or working surface S faces down, against a substantially upwardly-facing, horizontal surface such as a table top or floor or any other board or other item that is oriented horizontally as on a workbench or across saw horses, for example.
  • a substantially upwardly-facing, horizontal surface such as a table top or floor or any other board or other item that is oriented horizontally as on a workbench or across saw horses, for example.
  • an overhead surface such as a ceiling C may be relatively easily and safely sanded without the need for ladders, scaffolding, stilts, or the like, depending on the height of the ceiling C and the length of the extension handle E, which may typically be on the order of four to six feet (4 - 6 ft.) and so would easily allow a user U to sand eight to ten foot (8 - 10’) high ceilings C, which are most common at least in residential construction, while standing comfortably and safely on the floor.
  • walls W all the way up to such a ceiling C may also be easily sanded by grasping and manipulating the extension handle E so as to position the palm sander P as desired with its working surface S against the wall W, ceiling C, or other surface that is to be sanded.
  • the apparatus 20 may be installed on such a palm sander power tool P in any desired orientation, such as being inverted from the position shown in Fig. 9 so as to have the handle receiver 62 oriented downwardly, as might be desirable if an overhead upwardly-facing surface is to be sanded versus an overhead downwardly-facing surface like a ceiling C.
  • the apparatus 20 in any orientation may also be positioned rotationally at virtually any position about the circumference of the palm sander P as may be desired for its manipulation and use, except that it is desirable with such exemplary power tool extension handle apparatus 20 that the angled handle receiver 62 at least be oriented so that it and any extension handle E installed therein clears the power cord D that typically extends from the sander head H as shown.
  • the apparatus 20 is installed inverted relative to the palm sander P, it should be oriented such that the receiver 62 and handle E clear the sander exhaust T and any dust collector O installed on the exhaust T.
  • a power tool extension handle apparatus 20 may similarly be installed on a variety of other power tools and the like beyond the illustrated palm sander P, which is to be understood as exemplary and non-limiting. That is, it will be appreciated that by providing a sufficiently long strap 82 (Figs. 1 and 2) and having its effective or working length be adjustable via at least its slidable engagement with the pivot buckle 92 (Figs. 1 and 2), a variety of tools P and tool features may be engaged. As such, a power tool extension handle apparatus 20 according to aspects of the present invention is provided as being relatively universal in its ability to selectively and removably mount on not just a variety of palm sanders but a variety of other tools as well.
  • FIG. 11 there are shown perspective views of an alternative exemplary embodiment of a power tool extension handle apparatus 20 according to aspects of the present invention, both standing alone (Fig. 11) and again as in use on a palm sander power tool P (Fig. 12).
  • the alternative apparatus 20 again generally comprises a clamp assembly 30 having a clamp body 32 with opposite first and second legs 42, 52, including a clamp pad 72 on the curved inner surface of the clamp body 32.
  • a strap assembly 80 for selective engagement with the clamp assembly 30 for enabling the apparatus 20 to be mounted on a power tool P or the like, though here the strap assembly 80 differs from that of the first exemplary embodiment of Figs.
  • pivot buckle 92 While it may itself be configured substantially as best shown in Fig. 2, here it is pivotally attached and then secured in the tightened position on the first leg 42 of the clamp body 32 employing respective pivot and retainer pins 48, 51. That is, the pivot end of the pivot buckle 92 is pivotally mounted on the first leg 42 by here passing a pivot pin 48 through the first buckle wall pivot hole 95 (Fig. 2), the clamp pivot hole 45 (Fig. 2) formed in the first leg 42, and the second buckle wall pivot hole 99 (Fig. 2) so as to define the first pivot 44.
  • the pivot buckle 92 is then secured in place by passing the retainer pin 51 through the first buckle wall retainer hole 96 (Fig. 2), a clamp retainer hole (not shown) formed in the first leg 42 in the location of the former spring-bearings 50 (Figs. 1 and 4), and the second buckle wall retainer hole 100 (Fig. 2) so as to define the first retainer 49.
  • the strap body 82 is again formed about a retainer clip 112 having a frame 114 that here is secured to the clamp body 32 in the vicinity of the second leg 52 by a retainer bolt 61 defining the second retainer 59.
  • the pivot pin 48 may be pulled so as to temporarily completely disengage the pivot buckle 92 from the clamp body 32 and thereby allow insertion of a tool P and then reengagement and actuation of the pivot buckle 92 to mount the apparatus 20 on the tool P, assuming the tool P cannot slide between the clamp assembly 30 and the strap assembly 80 while the strap body 82 is secured to the clamp body 32 at both ends.
  • a handle mount 142 may be formed on the distal end 134 of the handle shaft 132.
  • the handle mount 142 may be formed having offset handle mount legs 144 corresponding to the receiver legs 66 of the handle receiver 62, whereby the handle mount 142 may be mounted on the handle receiver 62 as by handle mount screws 148 passing through openings (not shown) in the handle mount 142 and into the respective receiver threaded holes 64 so as to join the handle mount legs 144 with the respective receiver legs 66 and thus install the extension handle 130 on the apparatus 20.
  • handle mount screws 148 passing through openings (not shown) in the handle mount 142 and into the respective receiver threaded holes 64 so as to join the handle mount legs 144 with the respective receiver legs 66 and thus install the extension handle 130 on the apparatus 20.
  • the handle mount 142 and the handle mount legs 144 particularly may be bent or angled so that the handle mount 142 and associated extension handle 130 extend away from the clamp assembly 30 and clamp body 32 at an angle, here of approximately forty-five degrees (45°), though of course other angles are possible in various configurations and contexts, with such angle again being either fixed or adjustable according to aspects of the present invention. It will also be appreciated particularly with reference to Fig.
  • the gap or space formed between the respective receiver legs 66 and handle mount legs 144 creates a handle mount opening 146 through which, for example, the power cord D of the palm sander power tool P may pass when the apparatus is installed, the opening 146 serving to allow substantially central installation of the apparatus 20 on the power tool P with the extension handle 130 essentially being in the same plane as the power cord D and the exhaust T, though again other orientations of the apparatus 20 relative to the tool P are possible.
  • the cord D extends through the opening 146 it will be appreciated that the structure surrounding the cord D will thus protect it and prevent it from being kinked or bending back toward the sander P when in use.
  • the same handle mount opening 146 would then provide clearance for any dust collector O (Fig. 10) installed on the sander exhaust T.
  • the palm sander power tool P with power tool extension handle apparatus 20 and related extension handle 130 mounted thereon as through the handle mount 142 may be employed in sanding any desired surface as described herein.
  • the extension handle 130 and particularly the handle shaft 132 may be formed integrally with the handle mount 142 or the two components may again be removably engaged employing any means now known or later developed.
  • FIG. 13 there is shown a perspective view of a further alternative exemplary embodiment power tool extension handle apparatus 20 according to aspects of the present invention.
  • the apparatus 20 is essentially identical to the first exemplary embodiment of Figs. 1-10, except that the handle receiver 62 is pivotable relative to the clamp assembly 30.
  • the handle receiver 62 is formed as a separate component and pivotally installed on the clamp body 32 as through a receiver pivot 68.
  • the receiver pivot 68 is oriented so as to allow the handle receiver 62 to pivot somewhat left and right relative to the clamp body 32 which would enable the direction of operation or force relative to the power tool P (Figs.
  • the receiver pivot 68 may be arranged to allow the handle receiver 62 to pivot somewhat up and down relative to the clamp body 32 so as to thereby enable the direction or angle of the extension handle 130 relative to the power tool P to be adjusted, which again may be convenient when working on multiple surfaces, such as transitioning from sanding a ceiling C to an adjoining wall W (Fig. 10), or vice versa.
  • the particular side-to-side pivot arrangement shown, and again any other such arrangement for up-down pivoting or otherwise may comprise an array of receiver pivot holes 69 formed in the articulating handle receiver 62 about the central receiver pivot 68 for selective indexing of the pivot or angular position as by inserting a receiver pivot pin 70 through a select receiver pivot hole 69 and into the clamp body 32, or more particularly inserting the receiver pivot pin 70 through a receiver pivot hole 69 aligned with a hole (not shown) in the clamp body 32 when the handle receiver 62 is shifted or indexed to the desired position so as to align such holes for the passage therethrough of the receiver pivot pin 70 and thereby lock the handle receiver 62 in a desired position relative to the clamp body 32.
  • FIGs. 14 and 15 there are shown perspective views of a still further alternative exemplary embodiment of a power tool extension handle apparatus 20 according to aspects of the present invention, both standing alone (Fig. 14) and again as in use on a palm sander power tool P (Fig. 15).
  • the alternative apparatus 20 again generally comprises a clamp assembly 30 having a clamp body 32 with opposite first and second legs 42, 52 and a handle receiver 62 installed on the clamp body 32.
  • the handle receiver 62 is formed as an angled plate essentially mounted on the back or edge of the clamp body 32 opposite of the legs 42, 52 and then formed to bend or extend back over the clamp body 32, and particularly the legs 42, 52 and related inner surface 34 so as to thus position any extension handle 130 mounted on the handle receiver 62 substantially over or aligned with the midline of any power tool P mounted within the apparatus 20.
  • a clamp bracket 120 configured to engage the offset legs 42, 52 of the clamp body 32 and thus complete the clamp assembly 30 and provide for complete securement about the perimeter or circumference of any power tool P feature on which the apparatus 20 is to be selectively mounted.
  • a pair of clamp bracket screws 122 may be provided for the purpose of mounting the clamp bracket 120 onto the clamp body 32.
  • the angled plate defining the receiver 62 is formed opposite the clamp body 32, in the region thereover, having a handle mount pin 150 on which the handle shaft 132 of the extension handle 130 is pivotally engaged at a distal end 134 thereof.
  • a handle mount bolt 154 engages the handle shaft 132 offset from the handle mount pin 150 through a handle mount slot 152 formed in the receiver 62, whereby the angle of the extension handle 130 relative to the handle receiver 62 and thus the clamp assembly 30 may be adjusted by selectively loosening the handle mount bolt 154, pivoting the handle shaft 132 about the handle mount pin 150 as the handle mount bolt 154 slides within the handle mount slot 152, and retightening the handle mount bolt 154 to secure the extension handle shaft 132 relative to the clamp assembly 30 in the desired position. It will be appreciated by those skilled in the art that such further alternative exemplary apparatus 20 thus enables articulation or selective adjustment of the angle of the extension handle 130 relative to the power tool P installed within the apparatus 20.
  • the power tool P may be installed in various orientations relative to the apparatus 20, with the angled arrangement of the handle receiver plate 62 providing clearance such as over or around the head H of the typical palm sander power tool P even as the neck N is secured within the clamp assembly 30 as by being clamped between the clamp body 32 and the clamp bracket 120.
  • the clamp assembly 30 and clamp body 32 particularly may be configured as in the other exemplary embodiments shown and described in connection with Figs. 1-13 and so interface with a strap assembly 80 for the purpose of mounting the power tool P therein while having an angled handle receiver 62 and pivotally adjustable extension handle 130 engaged therewith as in the embodiment of Figs. 14 and 15.
  • FIG. 16 and 17 there are shown perspective views of a still further alternative exemplary embodiment of a power tool extension handle apparatus 20 according to aspects of the present invention, somewhat analogous to the exemplary embodiment of Figs. 11 and 12, though here with the handle mount 142 being pivotable relative to the handle receiver 62, and thus showing the apparatus 20 as in use on a palm sander power tool P in two different operational modes for purposes of illustration.
  • the alternative apparatus 20 again generally comprises a clamp assembly 30 having a clamp body 32 with opposite first and second legs 42, 52 (Fig.
  • the strap assembly 80 is again shown as the alternative arrangement of Figs. 11 and 12, but again may also comprise a strap assembly 80 as in the exemplary embodiment of Figs. 1-10, or any other such assembly or component by which the apparatus 20 may be selectively and temporarily secured on a power tool P or the like.
  • the handle receiver 62 extending from the clamp body 32 is once more formed having offset receiver legs 66 configured for engagement with the corresponding offset handle mount legs 144 formed on the handle mount 142 positioned at the distal end 134 of the handle shaft 132.
  • the handle mount legs 144 are pivotally installed on the receiver legs 66 via respective receiver pivot pins 70.
  • the pivot pins 70 are oriented somewhat horizontally to facilitate up-down angular movement of the extension handle 130 relative to the clamp assembly 30 and thus the power tool P, though it will again be appreciated that any other such arrangement for side-to-side pivoting or otherwise is possible according to aspects of the present invention.
  • the handle mount 142 is positioned relative to the handle receiver 62 such that the extension handle 130, and the handle shaft 132, specifically, is at an angle, for example, of approximately forty-five degrees (45°), much like the rigid or fixed engagement of the handle 130 relative to the clamp assembly 30 in the exemplary embodiment of Figs. 11 and 12.
  • the handle mount 142 and the handle mount legs 144 particularly may again be bent or angled so that while the body of the handle mount 142 and the associated extension handle 130 extend away from the clamp assembly 30 at an angle, again here of approximately forty-five degrees (45°), though of course other angles are possible in various configurations and contexts, the handle mount legs 144 themselves may be substantially in line or parallel with the respective receiver legs 66 in the default first operational mode as shown in Fig. 16. Turning then to Fig.
  • FIG. 17 there is shown the same apparatus 20 now in a second operational mode wherein the handle 130 is pivoted relative to the clamp assembly 30 through an angle Y measured from the default first operational configuration as by simply pivoting the handle mount 142 and the handle mount legs 144 specifically relative to the handle receiver 62 and the receiver legs 66 specifically about the pivot pin(s) 70.
  • the handle 130 is effectively lowered or oriented somewhat horizontally and hence brought more in line with the plane of the clamp body 32 and thus the plane of the working surface S of the power tool P, as may be desired in certain applications.
  • the handle 130 may have instead been pivoted in the opposite direction from the default first operational configuration of Fig.
  • the handle 130 may thus be shifted through a range of angles B, from at least zero to ninety degrees (0-90°), though again, even further angular movement may be possible and at times desirable.
  • any mechanical engagement between the relative sliding surfaces for substantial securement of the handle 130, and the handle mount 142 specifically, relative to the clamp assembly 30, and the clamp body 32 specifically, now known or later developed may be employed according to aspects of the present invention without departing from its spirit and scope, including but not limited to frictional surfaces, ratcheting surfaces or features, selectively engageable magnets, etc., with or without any biasing elements such as springs or flexible memory materials to bias the handle mount 142 to a desired position or orientation relative to the handle receiver 62 It will also be appreciated particularly with reference to Fig.
  • FIG. 17 illustrating the alternative exemplary power tool extension handle apparatus 20 in use in its second operational mode that as the handle 130 is pivoted downwardly and thus more in-line also with the tool’s power cord D the gap or space formed between the respective receiver legs 66 and particularly the handle mount legs 144 creates a handle mount opening 146 through which the power cord D of the palm sander power tool P still may pass when the apparatus is installed in various angular positions of the handle 130, the opening 146 again serving to allow substantially central installation of the apparatus 20 on the power tool P with the extension handle 130 essentially being in the same plane as the power cord D and the exhaust T, though again other orientations of the apparatus 20 relative to the tool P are possible, while still protecting such structure of the power tool P.
  • the same handle mount opening 146 would then provide clearance for any dust collector O (Fig. 10) installed on the sander exhaust T and even with various angular orientations of the extension handle 130.
  • the palm sander power tool P with power tool extension handle apparatus 20 and related extension handle 130 mounted thereon may be employed in sanding any desired surface as described herein.
  • the extension handle 130 and particularly the handle shaft 132 may be formed integrally with the handle mount 142 or the two components may be removably engaged employing any means now known or later developed.
  • FIGs. 18-20 there are shown perspective views of a still further alternative exemplary embodiment of a power tool extension handle apparatus 20 according to aspects of the present invention, here somewhat analogous to the exemplary embodiments of Figs. 1-10 and 13 though with the handle receiver 62 for receipt of the extension handle E being substantially universally pivotable relative to the clamp body 32, and thus showing the apparatus 20 as in use on a palm sander power tool P in three different operational modes for purposes of illustration.
  • the alternative apparatus 20 again comprises a clamp assembly 30 having a clamp body 32 with opposite first and second legs 42, 52 (Figs.
  • the strap assembly 80 is again shown as the first exemplary arrangement of Figs. 1-10 and 13, but again may also comprise a strap assembly 80 as in the exemplary embodiment of Figs. 1 1 and 12, or any other such assembly or component by which the apparatus 20 may be selectively and temporarily secured on a power tool P or the like.
  • the alternative clamp body 32 is further formed with a somewhat rearwardly projecting receiver ball 67 on which the handle receiver 62 formed having a corresponding receiver socket 71 is engaged distally; the proximal end of the receiver 62 may again be configured with a receiver threaded hole 64 (Figs.
  • a default first operational mode here may entail the handle E and specifically the handle receiver 62 with receiver socket 71 substantially in-line with or centered on the clamp body’s receiver ball 67, which may be achieved through a variety of biasing techniques related to the configuration and material properties of the components, particularly the engagement of respective arcuate or semi-spherical surfaces.
  • the handle E may be pivoted relative to the clamp assembly 30 as by shifting the receiver socket 71 on the receiver ball 67, either up and down through a vertical displacement angle Y (Fig. 19) in a second operational mode, somewhat analogous to the pivoting relationship illustrated in Figs.
  • receiver ball 67 is shown as being installed on or incorporated into the clamp body 32 and the receiver socket 71 is shown as being installed on or incorporated into the handle receiver 62, such components or any other analogous structure may also be reversed. Any and all such structure may be integral or unitary in its manufacture or be assembled from multiple parts, again whether in permanent or temporary and/or fixed or moveable arrangements.
  • FIGs. 21-32 there are shown a variety of further alternative exemplary embodiments wherein the power tool extension handle apparatus 20, and the handle receiver 62 specifically, is incorporated or integrated into the illustrative sander power tool P.
  • such embodiments entail one or more features built or incorporated directly into the power tool P to accommodate either permanent or removable engagement of an extension handle E, directly or indirectly, such that the power tool P is effectively purpose-built for the accommodation of an extension handle E rather than the power tool P being a prior art or industry known design on which an after-market extension handle apparatus 20 may be installed as illustrated herein in connection with the exemplary alternative embodiments of Figs. 1-20.
  • the invention is not so limited, but may be employed in connection with a variety of other power tools now known or later developed.
  • the power tool extension handle apparatus 20 is shown as being installed substantially at or in the vicinity of the neck N of the power tool P, in alternative embodiment any such installation and related built-in or integrated features may be incorporated at other areas of the power tool P, including but not limited to the head H or base B.
  • FIG. 21 there is shown a perspective view of sander power tool P having an extension handle apparatus 20 incorporated in the neck N thereof.
  • the apparatus 20 generally comprises a handle receiver 62 extending from the neck N at an angle, analogous to the receiver 62 formed as part of the clamp body 32 in the first exemplary embodiment of Figs. 1-10.
  • the receiver 62 is rigidly mounted, in that it is not shown as pivoting or articulating in any manner, and so is formed or fashioned at a fixed position or angle.
  • the entire device can at least be clamped on the neck N of the power tool P at various radial positions.
  • the built-in or integral receiver 62 of Fig. 21 can also be installed or integrated at various positions, such that it is to be appreciated that the position illustrated in the vicinity of or somewhat aligned with the power cord D and exhaust T is to be understood as exemplary and non-limiting.
  • the power cord D and exhaust T can also be configured or located differently.
  • extension handle apparatus 20 incorporated directly in the power tool P, there is provided a relatively simple adaptation and use for conveniently and selectively increasing the reach of the tool P, here by simply screwing or unscrewing the extension handle E from the handle receiver 62.
  • Figs. 22-24 there is shown an alternative exemplary embodiment somewhat like that of Fig. 21 , except that here the handle receiver 62 is configured so as to articulate or be shiftable in at least one direction. That is, rather than being rigidly mounted in a fixed position as illustrated with the exemplary handle mount apparatus 20 of Fig. 21 , the handle receiver 62 is formed on a body 32 having somewhat curved or arcuate opposite legs 42, 52 configured to be received within a recess 160 formed within the neck N of the power tool P.
  • the recess 160 has a curved back wall 164 spaced from the outer wall of the neck N so as to form a gap therebetween in which the body 32 and particularly the opposed legs 42, 52 may selectively ride.
  • the body 32 has a curved inner surface 34 configured to ride on the curved wall 164 of the recess 160 and a somewhat parallel curved outer surface 36 to nests within or follows the inside of the neck N. In this manner it will be appreciated that at least part of the legs 42, 52 or a portion of the body 32 is retained within the recess 160 at all times during assembly and use of the apparatus 20.
  • the perimeter 162 of the recess 160 provides stops both horizontally or above and below so as to keep the receiver 62 and body 32“in plane” or“on axis” and vertically or left and right on opposite edges to limit the pivot travel of the body 32 in each direction.
  • movement of the body 32 within the recess 160 may be limited frictionally or by some other mechanical means such that the body 32 can be shifted to various pivot or angular positions as desired for the extension handle E relative to the power tool P and the working surface S particularly and then retained in such position, again by friction or otherwise, as the power tool P is operated unless and entail a force greater than such friction or the like is applied to the tool P or handle E so as to shift one relative to the other.
  • frictional engagement may be provided between the inner surface 34 of the body 32 and the curved back wall 164 of the neck recess N formed in the power tool P.
  • the body 32 may be biased within the recess 160 or to a particular position on or relative to the power tool P.
  • the opposed first and second legs 42, 52 may be formed with respective first and second holes 43, 53 or the like for engaging respective first and second springs 166, 168 that are at opposite ends engaged within the neck N.
  • each such spring 166, 168 being essentially equal and opposite would tend to bias or shift the body 32 and thus the handle receiver 62 and handle E to a somewhat centered position within the recess 160 and thus on the power tool P, defining an“at rest” or“equilibrium” position of the handle receiver 62, which spring bias could then be overcome by an application of a force to the handle E and thus the body 32 in either direction so as to pivot the receiver 62 and handle E off-center, to the extent allowed by the springs 166, 168 and/or the physical limits of travel dictated by the perimeter 162 of the recess 160. As shown in Fig.
  • a power tool extension handle apparatus 20 for illustration, the body 32 and thus the handle receiver 62 and handle E are shifted to the right from the“at rest” or central position.
  • a variety of other means and ranges of motion and of biasing any such articulating members now known or later developed may be employed in a power tool extension handle apparatus 20 according to aspects of the present invention beyond those shown and described without departing from the spirit and scope of the invention, such that the exemplary embodiments are to be understood as illustrative and non limiting.
  • Figs. 25-28 there are shown still further exemplary embodiments of a power tool extension handle apparatus 20 according to aspects of the present invention as incorporated into a sander power tool P.
  • the apparatus 20 once more comprises a body 32 with an integral handle receiver 62, again here configured as an angled member with a female threaded hole 64 (Fig. 1), that is assembled with the tool P about its neck N.
  • the body 32 defines or is formed as a complete collar that is circumferentially and rotationally installed about the neck N rather than having first and second or right and left arcuate legs 42, 52 installed within a recess 160 formed in the neck N (Fig. 24).
  • the neck N of the power tool P is formed having a circumferential channel 170 within which the collar-like body 32 rides when installed on the neck N.
  • a series of spaced-apart pin holes 172 are formed somewhat centrally about the channel 170 for selective removable receipt of a locking pin 37 installed in and through the body 32 so as to allow the body 32 and thus the handle receiver 62 and handle E to be selective positioned relative to the power tool P as needed during use. While a particular arrangement of such pin holes 172 and thus a range of movement of the body 32, at least in various locked positions, is shown, with further reference to the top assembled cross-sectional view of Fig. 27A taken from line 27A-27A in Fig. 25, it will be appreciated that a variety of other such arrangements is possible according to aspects of the present invention, including various other locking mechanisms now known or later developed in the art.
  • the exemplary locking pin 37 installed in the body 32
  • such may be threadably inserted, frictionally engaged, snap-fit, spring- biased on a keeper, or again any other such means now known or later developed.
  • the collar-like body 32 may be formed having a hinge 38 and a spaced-apart coupling 39 for selective swinging open or closed a hinged portion of the body 32 and thereby removably installing the body 32 about the neck N of the power tool P, which removal it will be appreciated may be desired when the palm sander P is to be used in a conventional manner without any extension handle E.
  • the collar-like body 32 is simply seated in the channel 170 formed in the neck N, hinged closed, and secured thereabout by re-engaging the coupling 39, the extension handle E is threaded into the receiver 62, and the rotational position of the handle E is set via the rotatable collar body 32 and locking pin 37.
  • the hinged portion of the body 32 or the actual opening formed between the hinge 38 and the coupling 39 when opened should be at least as large or larger than the diameter of the neck N in the channel 170, which it will be appreciated facilitates passage of the collar-like body 32 about the neck N in the vicinity of the channel 170 even though other regions of the sander power tool P may be larger.
  • the coupling 39 for selectively and temporarily securing the body 32 about the neck N may be any such mechanism now known or later developed, a tongue-and-groove-type undercut engagement being shown.
  • the body 32 here in the exemplary collar-type embodiment and really any other embodiment herein may again be formed of any suitable material and by any suitable process now known or later developed, including but not limited to metals such as steel, aluminum, alloys, and the like and a variety of plastics such as polypropylene, polystyrene, polyvinyl chloride (“PVC”), acrylonitrile butadiene styrene (“ABS”), polyethylenes such as high density polyethylene (“HDPE”) and low density polyethylene (“LDPE”), polycarbonate, polyurethane, and other such plastics, thermoplastics, thermosetting polymers, and the like, any of which being formed as by machining, molding, casting, extruding, stamping, etc.
  • plastics such as polypropylene, polystyrene, polyvinyl chloride (“PVC”), acrylonitrile butadiene styrene (“ABS”), polyethylenes such as high density polyethylene (“HDPE”) and low density polyethylene (“LDPE
  • Fig. 28 there is shown a further alternative exemplary embodiment much like that of Figs.
  • 25-28 are also possible as having incorporated therein at any such pin locations or otherwise other locking or biasing means including but not limited to springs so as to bias any particular connection or linkage to an“at rest” position, away from which the particular component may be shifted by simply applying a force sufficient to overcome the biasing force or effect of the spring, friction, or other such means now known or later developed.
  • springs so as to bias any particular connection or linkage to an“at rest” position, away from which the particular component may be shifted by simply applying a force sufficient to overcome the biasing force or effect of the spring, friction, or other such means now known or later developed.
  • Figs. 29-31 there are shown still further alternative exemplary embodiments of a power tool extension handle apparatus 20 according to aspects of the present invention as incorporated into a sander power tool P.
  • the apparatus 20 once more comprises a body 32 with an integral handle receiver 62, the body 32 here configured as a pair of offset legs 42, 52 that are assembled with the tool P in the region of the neck N but that straddle and extend about the head H of the tool P and enable engagement and orientation of the extension handle E somewhat“from above” rather than “from behind” the tool P.
  • the handle receiver 62 is again shown as essentially being formed with a somewhat central threaded hole 64 (Fig. 1) for selective threadable engagement with an extension handle E.
  • the apparatus body 32 is once more here configured as two spaced-apart or splayed legs 42, 52 engaged at one end or proximally with the receiver 62 and terminating distally in opposite free ends of the legs 42, 52 that are substantially parallel and offset in the exemplary embodiment.
  • leg pins 40 configured to selectively engage corresponding leg mount holes 182 formed in opposed leg mounts 180 installed on, incorporated into, or otherwise formed on somewhat opposite sides of the neck N of the sander P.
  • leg pins 40 may be by selectively pushing or pulling the leg pins 40 relative to the legs 42, 52, analogous to the locking pin 37, or may be by selectively flexing the opposite legs 42, 52 outwardly so that the pin 40, though immovable relative to the legs 42, 52, may clear the leg mounts 180 and be positioned adjacent to the leg mount holes 182, and then seat therein upon release of the legs 42, 52, the legs 42, 52 thus being sufficiently flexible and resilient and thus serving to allow such operation and then spring or be biased back into a position wherein the leg pins 40 are engaged with the leg mounts 180 on the sander P as desired.
  • leg mounts 180 may be formed having an adjacent leg mount plate 184 configured in somewhat of a curved or arced arrangement and having a curved pattern of leg mount plate holes 186 formed therein.
  • a locking pin 37 is then formed on or installed in the at least one leg 42, 52 adjacent to the leg mount plate 184 in a position for selectively engaging one of the leg mount plate holes 186 so as to selectively lock the legs 42, 52 and thus the body 32, retainer 62, and extension handle E at a desired angular position relative to the sander power tool P.
  • leg mount plate holes 186 are shown and thus a range of possible angles or movement of the handle assembly relative to the tool P, the invention is not so limited, and all such configurations and geometries are again to be understood as merely illustrative of aspects of the present invention and not limiting.
  • FIG. 31 particularly, there is shown yet another alternative exemplary embodiment of a power tool extension handle apparatus 20 according to aspects of the present invention much like that of Figs. 29 and 30, except that here rather than the opposite leg mounts 180 being rigidly mounted or affixed to the neck N of the sander P, the mounts 180 are themselves installed on a collar-like body 32’ that rotates about the neck N analogous the exemplary embodiments of Figs. 25-28, such secondary body 32’ itself having a secondary locking pin 37’ for selectively locking the handle assembly at a desired rotational position relative to the sander P with the remainder of the assembly, namely the legs 42, 52 together forming the primary body 32 then still be pivotable as disclosed herein.
  • FIG. 32 there is shown a still further alternative exemplary embodiment of a power tool extension handle apparatus 20 according to aspects of the present invention as incorporated into a sander power tool P, here with the handle receiver 62 for receipt of the extension handle E being substantially universally pivotable relative to the sander P in a fashion analogous to the exemplary embodiment of Figs. 18-20. That is, rather than a separate clamp body 32 (Figs. 18-20) having a receiver ball 67 that may be removably installed about the neck N of the sander P, the receiver ball 67 is formed integrally on the neck N of the sander P.
  • the receiver ball 67 is configured to extend or project somewhat rearwardly, on which the handle receiver 62 formed having a corresponding receiver socket 71 is engaged distally.
  • the proximal end of the receiver 62 may again be configured with a receiver threaded hole 64 (Fig. 1) for threadable receipt of the distal end of the extension handle E, or again with any other engagement means now known or later developed.
  • a receiver threaded hole 64 FIG. 1
  • ball-and-socket- type engagement of the handle E, and specifically the handle receiver 62, with the sander P, and specifically the receiver ball 67 enables universal movement therebetween, or pivoting of the handle E or the handle receiver 62 in multiple planes, or up and down and side to side.
  • a power tool extension handle apparatus for temporarily securing an extension handle on a power tool having a neck, the apparatus comprising: a clamp assembly comprising a clamp body having a first leg and an offset second leg, the first leg having a first pivot and a first retainer and the second leg having a second retainer, the clamp body further having a handle receiver with a receiver threaded hole formed therein, the clamp body and the first and second legs together defining a curved clamp inner surface; and a strap assembly comprising a strap body having a pivot end and an opposite retainer end, the strap assembly further comprising a pivot buckle having a first buckle wall and an opposite second buckle wall interconnected by spaced-apart buckle slats so as to form buckle slots therebetween, the strap body being selectively passed around the buckle slats and through the buckle slots so as secure the pivot end of the strap body within the pivot buckle, the first and second buckle walls being formed with respective and opposite first and second buckle wall pivot holes such that the pivot buckle is pivotally engaged with the first
  • the handle receiver comprises: a receiver pivot pivotally engaging the clamp body intermediate the first and second legs; an array of receiver pivot holes formed offset from the receiver pivot; and a receiver pivot pin engaging both a select pivot hole of the handle receiver and the clamp body so as to selectively and temporarily fix the handle receiver relative to the clamp body.
  • the handle receiver is further formed having a handle mount pin offset from an arcuate handle mount slot formed therein; and the extension handle is formed having a handle shaft configured at a distal end thereof to pivotally engage the handle receiver as by being pivotally connected to the handle mount pin and having a handle mount bolt that engages the handle shaft offset from the handle mount pin through the handle mount slot.
  • the handle receiver further comprises offset receiver legs; and the handle mount is formed having offset handle mount legs substantially corresponding to the offset receiver legs and pivotally mounted thereto, the offset handle mount legs defining a handle mount opening therebetween.
  • a retainer pin defining the first retainer is configured to selectively pass through a first buckle wall retainer hole formed in the first buckle wall offset from the first buckle wall pivot hole and pass into the first leg of the clamp body offset from the first pivot as the pivot buckle is pivoted about the first pivot and thereby temporarily secure the pivot buckle adjacent to the first leg of the clamp body.
  • extension handle comprises a handle shaft having an integral handle mount at a distal end thereof configured for removable engagement with the receiver threaded hole as by a handle mount screw.
  • the handle receiver further comprises offset receiver legs, each receiver leg having a receiver threaded hole; and the handle mount is formed having offset handle mount legs substantially corresponding to the offset receiver legs, the offset handle mount legs defining a handle mount opening therebetween.
  • a method of employing a power tool extension handle apparatus as defined in any one of embodiments 1-35 comprising the steps of: positioning the clamp body such that the curved clamp inner surface partially encompasses the neck of the power tool; and securing the strap assembly on the clamp assembly so as to fully encompass the neck, comprising the further steps of: adjusting the pivot end of the strap body within the pivot buckle; engaging the retainer clip at the retainer end of the strap body with the second retainer formed on the second leg of the clamp body; and pivoting the pivot buckle about the first pivot so as to engage the pivot buckle with the first retainer formed on the first leg of the clamp body so as to temporarily secure the apparatus about the power tool.
  • step of adjusting the pivot end of the strap body within the pivot buckle comprises the further step of selectively passing the strap body around the buckle slats and through the buckle slots so as secure the pivot end of the strap body within the pivot buckle a desired distance from the retainer end of the strap body.
  • step of engaging the retainer clip at the retainer end of the strap body with the second retainer formed on the second leg of the clamp body comprises the further step of engaging the distal retainer member of the frame of the retainer clamp with the retainer flange formed on the second leg of the clamp body.
  • step of engaging the retainer clip at the retainer end of the strap body with the second retainer formed on the second leg of the clamp body comprises the further step of engaging the retainer bolt with the retainer clip and with the second leg of the clamp body.
  • step of pivoting the pivot buckle about the first pivot so as to engage the pivot buckle with the first retainer further comprises passing the pivot bolt through the respective first and second buckle wall pivot holes and the intermediate clamp pivot hole formed in the first leg of the clamp body and pivoting the pivot buckle about the pivot bolt.
  • step of pivoting the pivot buckle about the first pivot so as to engage the pivot buckle with the first retainer further comprises passing the pivot pin through at least the first buckle wall pivot hole and into the clamp pivot hole formed in the first leg of the clamp body and pivoting the pivot buckle about the pivot pin.
  • step of pivoting the pivot buckle about the first pivot so as to engage the pivot buckle with the first retainer comprises engaging the spring-bearing formed on the first leg of the clamp body offset from the first pivot with the first buckle wall retainer hole formed in the first buckle wall offset from the first buckle wall pivot hole.
  • step of temporarily engaging the extension handle with the handle receiver comprises removably engaging the handle mount formed integrally at the distal end of the handle shaft with the receiver threaded hole as by at least one handle mount screw.
  • step of temporarily engaging the extension handle with the handle receiver comprises removably engaging the handle mount formed integrally at the distal end of the handle shaft with the handle receiver as by a receiver pivot pin.
  • step of temporarily engaging the extension handle with the handle receiver comprises removably engaging the handle mount formed integrally at the distal end of the handle shaft with the handle receiver as by snapping a receiver socket formed on the handle mount with a receiver ball formed on the clamp body.
  • step of pivoting the extension handle relative to the handle receiver comprises the further steps of: forming the handle mount pin offset from the arcuate handle mount slot formed in the handle receiver; pivotally connecting the distal end of the handle shaft of the extension handle with the handle mount pin; and inserting a handle mount bolt through the handle mount slot and into the handle shaft offset from the handle mount pin.
  • step of pivoting the extension handle and the handle receiver relative to the clamp body.
  • step of pivoting the extension handle and the handle receiver relative to the clamp body comprises the further steps of: pivotally engaging the receiver pivot with the clamp body intermediate the first and second legs; and engaging the receiver pivot pin both with a select pivot hole of the handle receiver from among the array of pivot holes formed offset from the receiver pivot and with the clamp body so as to selectively and temporarily fix the handle receiver relative to the clamp body.
  • step of pivoting the extension handle and the handle receiver relative to the clamp body comprises the further step of pivoting the handle mount legs relative to the respective receiver legs about respective receiver pivot pins.
  • step of pivoting the extension handle and the handle receiver relative to the clamp body comprises the further step of pivoting the receiver socket formed on the handle mount relative to the receiver ball formed on the clamp body.
  • a kit comprising a power tool extension handle apparatus as defined in any one of embodiments 1-35.
  • kit of embodiment 56 further comprising the extension handle.
  • kit of embodiment 56 or embodiment 57 further comprising instructional material.
  • a power tool extension handle apparatus for use on a power tool having a neck, the apparatus comprising: a clamp assembly comprising a clamp body having a first leg and an offset second leg, the clamp body further having a handle receiver with a handle mount pin offset from an arcuate handle mount slot formed in the handle receiver, the clamp body and the first and second legs together defining a curved clamp inner surface; a clamp bracket configured to removably engage the first and second legs of the clamp body as through at least one clamp bracket screw; and an extension handle having a handle shaft configured at a distal end thereof to pivotally engage the handle receiver as by being pivotally connected to the handle mount pin and having a handle mount bolt that engages the handle shaft offset from the handle mount pin through the handle mount slot; whereby the clamp assembly and the clamp bracket may cooperatively engage the neck of the power tool as by the clamp body being positioned such that the curved clamp inner surface partially encompasses the neck of the power tool and then securing the clamp bracket on the clamp assembly so as to fully encompass the neck and
  • a power tool extension handle apparatus for use on a power tool having a neck, the apparatus comprising: a clamp assembly comprising a clamp body having a first leg and an offset second leg, the clamp body further having a receiver ball, the clamp body and the first and second legs together defining a curved clamp inner surface; a strap assembly comprising a strap body having a pivot end and an opposite retainer end configured to together span the clamp body substantially between the first and second legs thereof; a handle receiver formed with a receiver socket configured for substantially universal pivotal engagement with the receiver ball of the clamp body; and an extension handle having a handle shaft configured at a distal end thereof for engagement with the handle receiver; whereby the clamp assembly and the strap assembly may cooperatively engage the neck of the power tool as by the clamp body being positioned such that the curved clamp inner surface partially encompasses the neck of the power tool and then securing the strap assembly on the clamp assembly so as to fully encompass the neck as by securing the pivot end of the strap body to the first leg of the clamp body and the retain
  • a power tool extension handle apparatus for temporarily securing an extension handle on a power tool having a neck, the apparatus comprising a handle receiver with a receiver coupling formed therein, the handle receiver being incorporated into the power tool for selective receipt of the extension handle, thereby enabling increased reach with the power tool through engagement of the extension handle with the handle receiver formed on the power tool.
  • first and second springs are connected between the respective first and second legs and the recess so as to selectively bias the body and handle receiver within the recess.
  • each leg mount having formed therein an outwardly-opening leg mount hole configured for selective pivotal receipt of the respective leg pin formed on the first and second legs so as to pivotally mount the body and handle receiver on the power tool.
  • leg mount plate having a somewhat curved pattern of leg mount plate holes is formed on at least one leg mount and a locking pin is formed on at least a respective first or second leg, whereby the locking pin may selectively engage a leg mount plate hole to selectively lock the first and second legs and thus the body and handle receiver in a particular position relative to the power tool.
  • step of locking the body or the handle receiver comprises engaging a locking pin formed on the body or the handle receiver with a pin hole formed on the power tool.
  • step of removing the body and the handle receiver comprises hinging the body open so as to selectively remove the body from about the neck of the power tool.
  • step of installing the body and the handle receiver comprises positioning the body about the neck of the power tool and hinging the body closed so as to selectively install the body about the neck of the power tool as by removably joining a coupling.
  • a kit comprising a power tool extension handle apparatus as defined in any one of embodiments 64-107.
  • kit of embodiment 122 further comprising the extension handle.
  • kit of any of embodiments 122-124 further comprising instructional material.
  • a power tool comprising an extension handle apparatus for temporarily securing an extension handle on the power tool, the apparatus comprising a handle receiver with a receiver coupling formed therein, the handle receiver being incorporated into the power tool for selective receipt of the extension handle, thereby enabling increased reach with the power tool through engagement of the extension handle with the handle receiver formed on the power tool.
  • a power tool extension handle apparatus is disclosed and configured for selectively engaging a variety of power tools with an extension handle so as to extend their reach. Because the principles of the invention may be practiced in a number of configurations beyond those shown and described, it is to be understood that the invention is not in any way limited by the exemplary embodiments, but is able to take numerous forms without departing from the spirit and scope of the invention. It will also be appreciated by those skilled in the art that the present invention is not limited to the particular geometries and materials of construction disclosed, but may instead entail other functionally comparable structures or materials, now known or later developed, without departing from the spirit and scope of the invention.
  • the numbers expressing quantities of ingredients, properties such as concentration, reaction conditions, and so forth, used to describe and claim certain embodiments of the inventive subject matter are to be understood as being modified in some instances by the term“about.” Accordingly, in some embodiments, the numerical parameters set forth in the written description and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, the numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of some embodiments of the inventive subject matter are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable. The numerical values presented in some embodiments of the inventive subject matter may contain certain errors necessarily resulting from the standard deviation found in their respective testing measurements.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

L'invention concerne un appareil de poignée d'extension d'outil électrique servant à fixer temporairement une poignée d'extension sur un outil électrique comportant un col, l'appareil comprenant un récepteur de poignée à l'intérieur duquel un couplage récepteur est formé, le récepteur de poignée étant installé sur l'outil électrique en vue de recevoir sélectivement la poignée d'extension, de façon à accroître la portée de l'outil électrique par la mise en prise de la poignée d'extension avec le récepteur de poignée.
PCT/US2018/067550 2018-01-02 2018-12-26 Appareil de poignée d'extension d'outil électrique et procédé d'utilisation WO2019135968A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201862612941P 2018-01-02 2018-01-02
US62/612,941 2018-01-02
US16/039,084 US20180345442A1 (en) 2017-05-31 2018-07-18 Power tool extension handle apparatus and method of use
US16/039,084 2018-07-18

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WO2019135968A1 true WO2019135968A1 (fr) 2019-07-11

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11433524B2 (en) 2018-12-19 2022-09-06 George E. Westinghouse Vibration reducing extension system
DE202019106152U1 (de) * 2019-11-05 2021-02-09 Festool Gmbh Handgeführte Werkzeugmaschine

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US20040147209A1 (en) * 2003-01-13 2004-07-29 Bickford Theodore S. Extension device for a palm sander
US8776648B2 (en) * 2010-12-14 2014-07-15 Sung K. Lee Ergonomic tool handle enhancement
US20140369019A1 (en) * 2013-06-13 2014-12-18 William J. Sabia Power tool operating device
US20160243666A1 (en) * 2015-02-24 2016-08-25 Kenneth Johnson Apparatus for mounting one or more orbital sanders having an extended handle
GB2554741A (en) * 2016-10-07 2018-04-11 John Belfield Timothy Universal pole adapter for sander
US20180345441A1 (en) * 2017-05-31 2018-12-06 Uber Nikeo, LLC Power tool extension handle apparatus and method of use

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US6669543B2 (en) * 2001-10-31 2003-12-30 Ingersoll-Rand Company Interchangeable handle grip assembly, conversion kit, and tools incorporating same
US7249996B1 (en) * 2005-06-08 2007-07-31 Mykhaylo Volyar Vacuum sander

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US20020132570A1 (en) * 2001-03-13 2002-09-19 The Boeing Company Ergonomic sander handle apparatus and method
US20040147209A1 (en) * 2003-01-13 2004-07-29 Bickford Theodore S. Extension device for a palm sander
US8776648B2 (en) * 2010-12-14 2014-07-15 Sung K. Lee Ergonomic tool handle enhancement
US20140369019A1 (en) * 2013-06-13 2014-12-18 William J. Sabia Power tool operating device
US20160243666A1 (en) * 2015-02-24 2016-08-25 Kenneth Johnson Apparatus for mounting one or more orbital sanders having an extended handle
GB2554741A (en) * 2016-10-07 2018-04-11 John Belfield Timothy Universal pole adapter for sander
US20180345441A1 (en) * 2017-05-31 2018-12-06 Uber Nikeo, LLC Power tool extension handle apparatus and method of use

Also Published As

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