Patent Application
20170259402
The disclosure relates to rotary tool attachments and more particularly pertains to a new rotary tool attachment for sanding and polishing.
An embodiment of the disclosure meets the needs presented above by generally comprising a shaft that is elongated and has a plurality of longitudinal faces. A plurality of supports is coupled to and extends outwardly from the shaft. The plurality of supports comprises a pair of closely spaced supports. A drum is coupled to and extends from one of the pair of closely spaced supports to the other of the pair of closely spaced supports, such that a longitudinal gap in the drum is defined by the pair of closely spaced supports. The attachment includes an arm, which is complimentary to a channel that extends from proximate to a second end of the shaft to proximate to the supports, secured via a pivot hole in the shaft and a pivot pin. A wedge, complimentary to the longitudinal gap, is coupled to a second terminus of the arm.
There has thus been outlined, rather broadly, the more important features of the disclosure in order that the detailed description thereof that follows may be better understood, and in order that the present contribution to the art may be better appreciated. There are additional features of the disclosure that will be described hereinafter and which will form the subject matter of the claims appended hereto.
The objects of the disclosure, along with the various features of novelty which characterize the disclosure, are pointed out with particularity in the claims annexed to and forming a part of this disclosure.
The disclosure will be better understood and objects other than those set forth above will become apparent when consideration is given to the following detailed description thereof. Such description makes reference to the annexed drawings wherein:
With reference now to the drawings, and in particular to
As best illustrated in
A drum 28 is coupled to and extends from one of the pair of closely spaced supports 18 to the other of the pair of closely spaced supports 18, such that a longitudinal gap 30 in the drum 28 is defined by the pair of closely spaced supports 18. The drum 28 is coupled to each of the plurality of supports 16. The drum 28 comprises an interior layer 32 bonded to an exterior layer 34. The interior layer 32 is rigid, while the exterior layer 34 is pliant. The exterior layer 34 comprises sponge, preferably rubber sponge.
A channel 36 extends from proximate to the second end 22 of the shaft 12 to proximate to the supports 16. A pivot hole 38 bisects the channel 36 proximate to the second end 22 of the shaft 12. The pivot hole 38 is positioned in a pair of opposing faces 40 of the shaft 12. An arm 42 that is complimentary to the channel 36 has a penetration 44 proximate to a first terminus 46. The penetration 44 is complimentary to the pivot hole 38. A pivot pin 48 that is complimentary to the pivot hole 38 and the penetration 44 in the arm 42 is positioned in the pivot hole 38 and the penetration 44, such that the arm 42 is pivotally retained in alignment with the channel 36. A wedge 50 is coupled to a second terminus 52 of the arm 42. The wedge 50 is complimentary to the longitudinal gap 30.
The attachment 10 may comprise a lock 53. The lock 53 is configured to secure the arm 42 in the channel 36, such that the wedge 50 is secured in the longitudinal gap 30. A rod 54, which is cylindrical, has a first base 56 coupled to the second end 22 of the shaft 12. In one embodiment of the invention, the lock 53 comprises a pin 58, a stop 60 and a sleeve 66. The pin 58 is positioned in the rod 54 proximate to the first base 56. The pin 58 is spring loaded, such that the default position for the pin 58 is extending from the rod 12. The stop 60 is coupled to the rod 54 proximate to a second base 62 of the rod 54. The stop 60 comprises a circular extrusion 64 protruding from the rod 54. The sleeve 66 that is complimentary to the rod 54 is positioned over the rod 54. A shank 68 is coupled to the second base 62 for coupling the attachment 10 to a rotary tool.
In a preferred embodiment of the invention, the lock 53 comprises a bar 70 coupled proximate to the first terminus 46 of the arm 42 and extending perpendicularly from the arm 42. The bar 70 comprises a plurality of teeth 72 positioned to selectively couple to a latch 74 as the bar 70 is motivated through a recess 76 in the rod 54. The latch 74 is spring loaded. Each tooth 72 is positioned to couple to the latch 74 such that the arm 42 is lockable with the wedge 50 secured in the longitudinal gap 30. A release pin 78 is operationally coupled to the latch 74, such that the teeth 72 are decouplable from the latch 74.
In use, the longitudinal gap 30 is positioned in the drum 28 such that a polishing or sanding cloth or paper can be positioned by the user with the ends of the cloth or paper extending into the longitudinal gap 30. The wedge 50 is positioned on the arm 42 such that the wedge 50, when pivoted into the longitudinal gap 30, will engage and retain the cloth or paper on the drum 28. The bar 70 is motivated through the recess 76 as the arm 42 is pivoted, such that the teeth 72 selectively couple to the latch 74, thus retaining the arm 42 in the channel 36 and the wedge 50 in the longitudinal gap 30. Therein, attachment 10 is configured for coupling to a rotary tool using the shank 68.
With respect to the above description then, it is to be realized that the optimum dimensional relationships for the parts of an embodiment enabled by the disclosure, to include variations in size, materials, shape, form, function and manner of operation, assembly and use, are deemed readily apparent and obvious to one skilled in the art, and all equivalent relationships to those illustrated in the drawings and described in the specification are intended to be encompassed by an embodiment of the disclosure.
Therefore, the foregoing is considered as illustrative only of the principles of the disclosure. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the disclosure to the exact construction and operation shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the disclosure. In this patent document, the word “comprising” is used in its non-limiting sense to mean that items following the word are included, but items not specifically mentioned are not excluded. A reference to an element by the indefinite article “a” does not exclude the possibility that more than one of the element is present, unless the context clearly requires that there be only one of the elements.
