Adjustable guidebushing and inlay techniques
AssigneeLeigh Industries, Ltd.
InventorsKenneth M. Grisley, Jeffrey Greenup
Life of this patent
Estimating the term…
Abstract
A guidebushing assembly for use with an electric router. A guidebushing holder clamps to the router base, and a guidebushing is secured within the holder and used for cutting an inlay by reference to a female pattern. An appropriately shaped and sized recess is cut by reference to the female template while contacting the template with a tapered sleeve secured to the guidebushing. Movement of the guidebushing and sleeve along the axis of rotation of the router cutter permits adjustment in the size of the recess cut by reference to the template.
Claims20
A guide assembly for use with a template and an electric router having a base, the assembly comprising:
- a bushing holder for securing in the router base,
- a bushing positionable in the bushing holder and having a surface for contact with the template,
- a sleeve positionable around the bushing contact surface, the sleeve having a surface for contact with the template, and
- engagement structure in each of the sleeve and bushing to removably secure the sleeve to the bushing,
- wherein at least a portion of one of the bushing contact surface or the sleeve contact surface is conical.
A guide assembly for use with a template and an electric router having a base, the assembly comprising:
- a bushing holder for securing in the router base, the holder having an internal thread,
- a bushing locatable in the bushing holder by engagement between an external thread on the bushing and the bushing holder internal thread and repositionable within the holder by rotation of the bushing relative to the holder, the bushing comprising a cylindrical surface,
- a plurality of sleeves alternatively positionable on the bushing, each sleeve comprising a conical template contact surface, and
- at least one O-ring for engagement between the bushing and each of the sleeves alternatively to secure each sleeve to the bushing.
A method of shaping an inlay and a recess in a workpiece to receive the inlay by reference to a template, comprising:
- securing a bushing to an electric router,
- cutting an inlay with a cutter positioned within the bushing while contacting the template with the bushing,
- securing an externally tapered sleeve around the bushing,
- cutting a recess with the cutter and forming a shape of the recess while contacting the template with the sleeve, and
- enlarging the recess by adjusting the position of the sleeve and re-cutting the recess while contacting the template with the sleeve.
A method of shaping an inlay and a recess in a workpiece to receive the inlay by reference to a template, comprising:
- securing a bushing to an electric router,
- cutting an inlay with a cutter positioned within the bushing while contacting the template with the bushing,
- securing an externally tapered sleeve around the bushing, and
- adjusting the position of the sleeve in order to control the size of a recess produced while contacting the template with the tapered sleeve.
Dependencies are inferred from the claim text.