Patent Application
20150343542
The present invention relates to improvement in saws and, more particularly, to a device and method for cost-effectively sharpening dulled vibratory and oscillatory saw blades.
Vibratory and oscillatory saw blades tend to wear out quickly and need to be replace often. Currently there is no affordable apparatus or method of sharpening worn out blades, making extended use of such blades a capital intensive proposition.
As can be seen, there is a need for a device and method for cost-effectively sharpening dulled vibratory and oscillatory saw blades.
In one aspect of the present invention, a device for defining a saw-teeth configuration into a peripheral edge of a blade includes an arbor extending from a first portion to a second portion; a plurality of grinding discs disposed along the first portion of the arbor; and a plurality of spacers, each spacer disposed along the first portion of the arbor between adjacent grinding discs, forming a tooth-like configuration of grinding discs.
In another aspect of the present invention, a device for defining a saw-teeth configuration into a peripheral edge of a blade includes an arbor extending from a first portion to a second portion; and a cylinder forming a tooth-like configuration along a portion of its periphery, wherein the cylinder is secured along the first portion of the arbor.
These and other features, aspects and advantages of the present invention will become better understood with reference to the following drawings, description and claims.
The following detailed description is of the best currently contemplated modes of carrying out exemplary embodiments of the invention. The description is not to be taken in a limiting sense, but is made merely for the purpose of illustrating the general principles of the invention, since the scope of the invention is best defined by the appended claims.
Broadly, an embodiment of the present invention provides a sharpening device for cost-effectively sharpening dulled saw blades and a method of making and using the same. The sharpening device may form a tooth-like configuration adapted to rotatably grind and sharpen a saw-teeth configuration into a saw blade.
A saw blade 26 of a vibratory or oscillating saw 24 typically provides a thin blade of steel forming a saw-teeth configuration 30 along its peripheral edge 28. From time to time, the saw-teeth configuration 30 becomes worn-down and in need of sharpening.
Referring to
Each grinding disc 14 may be made of cutting stone, metal or another sufficiently strong material so as to function in accordance with the present invention as described herein. Each spacer 16 may be made of rubber or other material that is sufficiently resilient and durable so as to function in accordance with the present invention as described herein.
A threaded surface may be disposed along a portion of the arbor 12, typically along a threaded portion so as to define a non-threaded portion, as illustrated in
Each protective plate 20 may be disposed so as to bookend one of the two opposing ends of the evenly spaced plurality of grinding discs 14, thereby sandwiching the plurality of discs 14 and spacers 16. Each protective plate 20 may be dimensioned and adapted to protect the plurality of grinding discs 14 from breaking if the sharpening device 10 is banged or dropped. The nut fastener 18 and the washer fastener 22 may be disposed so as to bookend the opposing protective plates 20, securely engaging the plurality of grinding discs 14 to the arbor 12. Thus the pair of threaded fasteners 18 and 22 (or two 22s) may be disposed and secured along the threaded portion of the arbor 12 so as to sandwich the plurality of grinding discs 14.
A method of making the present invention may include the following. First, an individual may thread the nut fastener 18 along the arbor 12 to near the non-threaded portion. Then the individual may thread one protective plate 20 along the threaded portion of the arbor 12 so as to abut the nut fastener 18. Then the individual may alternatively thread one grinding disc 14 and one spacer 16 along the arbor 1, thereby creating the tooth-like configuration. Then the individual may thread the second protective plate 20 followed by the washer fastener 22, so that the protective plate 20 abuts the last grinding disc 14 in the alternative series.
Referring to
The method of using the present invention may include the following. A user may insert the non-threaded portion of the arbor 12 into a chuck 34 of a power tool 32, including but not limited to hand-held power drills, or otherwise rotatably mount the arbor 12 thereto. The user may engage the peripheral edge 28 of the saw blade 26 against the tooth-like configuration of the sharpening device 10. Alternatively, the user may engage the pre-formed saw-teeth configuration 30 of the saw blade 24 by interlocking it with the tooth-like configuration of the sharpening device 10. Then the user may activate the power tool 32 so as to rotate the sharpening device 10, safely spinning away from the user. The user may hold the saw blade 26 to be sharpened on the rotating tooth-like configuration until either the serrated saw-teeth configuration 30 is sufficiently formed, defined and/or sharpened.
It should be understood, of course, that the foregoing relates to exemplary embodiments of the invention and that modifications may be made without departing from the spirit and scope of the invention as set forth in the following claims.
This application claims the benefit of priority of U.S. provisional application No. 62/004,530, filed 29 May 2014, the contents of which are herein incorporated by reference.
| Number | Date | Country | |
|---|---|---|---|
| 62004530 | May 2014 | US |
