Adjustable guide for rotary saw
AssigneeNone recorded
InventorWallis L. Alsruhe
Life of this patent
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AssigneeNone recorded
InventorWallis L. Alsruhe
Estimating the term…
A rotary saw having an adjustable depth guide with a handle portion attached thereto is provided. The rotary saw has a housing with a flange projecting outwardly therefrom. The depth guide includes a column with a vertical channel therein. The depth guide is coupled with the housing by slidably receiving the flange in the channel. A transverse bolt in the housing permits a user to prevent movement between the depth guide and the housing and thereby set a cutting depth. A handle portion is removably coupled with the depth guide such that movement between the depth guide and the housing does not alter the relationship between the depth guide and the handle portion.
A rotary saw comprising:
A rotary saw comprising:
A rotary saw comprising:
A rotary saw comprising:
A rotary saw comprising:
A rotary saw comprising:
A rotary saw comprising:
A rotary saw comprising:
Dependencies are inferred from the claim text.
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Portable machines provided with or cooperating with guide means supported directly by the workpiece during action: the guide means being fixed…
Portable power-driven circular saws for manual operation: arrangements for adjusting the cutting depth or the amount of tilting
Out of contact with a rotary tool: mover mounted on rotary tool
By tool inside hollow work: one tool having unidirectional rotary motion
Term end not estimated
Not Applicable.
The present invention relates to a rotary saw. More particularly, this invention relates to an improved depth guide for use in connection with a rotary saw.
In recent years, the availability and popularity of rotary saws have increased dramatically. As word of the versatility afforded by rotary saws spreads, more and more people have begun to use these compact saws in connection with their ordinary tasks.
The objects and features of the invention noted above are explained in more detail with reference to the drawing, in which like reference numerals denote like elements, and in which:
FIG. 1 is a perspective view of a first embodiment of a rotary saw having an adjustable depth guide of the present invention;
FIG. 2 is a side elevational view of the rotary saw of FIG. 1;
Referring now to the drawing in detail, and initially to FIG. 1, numeral 10 generally designates a first embodiment of a rotary saw of the present invention. The rotary saw 10 has a housing 12, an adjustable depth guide 14 and a handle portion 16.
The housing 12 is generally tubular in shape and has a top 18, a bottom 20 and an outer surface 22. The circumference of the outer surface 22 is preferably small enough to permit a user to grasp the housing in their hand during use of the saw 10. Accordingly, the circumference is preferably less than 11 inches and more preferably less than 9.5 inches. The housing 12 is generally made of plastic, although, as readily understood in the industry, the housing could be made of a variety of materials, including metal. Similarly, the housing may be formed of two pieces which mate in a clamshell fashion, as known in the art. The housing 12 defines an interior cavity (not shown) for enclosing a motor (not shown) for providing rotational output for the rotary saw 10. The motor preferably has an output of less than 700 watts and more preferably less than 400 watts. While the motor may be variable speed, the motor preferably has a no-load rotational speed in the range of 30,000 to 35,000 RPM. Although a rotary saw may be cordless, FIG. 1 illustrates a cord 24 for providing the motor with electrical power. A switch (not shown) is preferably provided in the housing for activating the motor.
Adjacent the bottom 20 of the housing 12, and as best seen in FIG. 4, the housing 12 includes a first mating portion 26 which facilitates coupling of the depth guide 14 to the housing 12. The first mating portion 26 is generally a flange or rail 28 which projects outwardly from the outer surface 22 of the housing 12. The flange 28 has a longitudinal axis which is generally parallel to a central axis of the housing 12 about which a saw bit (not shown) of the rotary saw 10 rotates during use. In the first embodiment, the first mating portion 26 of the housing 12 preferably includes first and second flange members 30, 32. The flange members 30, 32 preferably have an T-shaped or L-shaped cross-section and are spaced apart in a back to back or mirror image relationship. It should be noted that while the flange 28 is illustrated in the first embodiment has having first and second flange members 30, 32 which cooperate to define the flange 28, it is well within the scope of the present invention for the flange 28 to have or be only one of the flange members 30, 32. Accordingly, the term “flange” can be used in the global sense to include several flange members or may be used in the specific sense to represent a single flange member.