Apparatus and Method for Causing Oscillating Motion of a Saw Blade, a Saw Blade, and a Method of Attaching a Saw Blade
AssigneeGenius IP Ltd.
InventorTeklemichael Sebhatu
Life of this patent
Estimating the term…
Abstract
Apparatus comprising: a rotatable drive shaft (12): one or more members (16a-d) mounted for oscillators, pivoting motion: motion conversion means (17, 28a-d, 16a-d) for convening rotational motion of the drive shaft to the oscillatory, pivoting motion of the one or more members: means coupling the or each member and one or more saw blades (14a-f) so that the oscillatory motion of the one or more member causes oscillatory cutting action of the or each blade. There is also provided a saw blade, and a method of attaching a saw blade.
Claims35
Apparatus comprising:
- a rotatable drive shaft;
- one or more members mounted for oscillatory, pivoting motion;
- motion conversion means for converting rotational motion of the drive shaft to the oscillatory, pivoting motion of the one or more members;
- means coupling the or each member and one or more saw blades so that the oscillatory motion of the one or more member causes oscillatory cutting action of the or each blade.
A saw blade for attaching to a sawing device including a first member and a second member, the saw blade comprising:
- a cutting edge portion;
- a mounting structure coupled with and spaced apart from the cutting edge portion, and configured for mounting of the saw blade on the sawing device using the first member and the second member;
- wherein the mounting structure comprises first and second limbs joined at ends nearer the cutting edge portion by a base, and extending away from the cutting edge portion,
- wherein the first and second limbs are arranged to provide a space between the limbs, wherein the space comprises:
- a first region including an opening between free ends of the first and second limbs, and having a width of at least a first width;
- a second region wider than the first width, such that, when the first member is located in the second region and the first member has a width greater than the first width, the saw blade cannot be separated from the mounting structure by movement longitudinal relative to a length of the first and second limbs;
- a third region defined in part by the base, in which at least a part of the second member can be located, wherein the third region allows the at least a part of the second member to be located therein following movement of the at least a part of the second member through the first and second regions, wherein, in use, when the base abuts the second member, the second region is located in a predetermined location relative to the first member so that a least a portion of the first member having a width greater than the first width can locate in the second region.
A method of attaching a saw blade to a sawing device, wherein the sawing device has a first member and a second member, wherein the saw blade includes a mounting structure comprising a pair of limbs extending transversely relative to a cutting edge of the saw blade, wherein the pair of limbs define a space between the limbs, and wherein the first member is reconfigurable between a second width less than or equal to a first width and a third width greater than the first width, the method comprising:
- operating the sawing device to configure the first member to have the second width;
- relatively locating the saw blade and the first and second members, when the first member has the second width, by moving the first and second members longitudinally relative to the limbs through a first region of the space, which includes an opening between free ends of the limbs and has a minimum width of the first width, so that at least a part of the second member is located in a third region of the space, and the first member is located in a second region of the space;
- operating the sawing device to reconfigure the first member to have the third width, whereby the blade cannot be separated from the mounting structure by movement longitudinal relative to the first and second limbs, and whereby the at least a part of the second member prevents movement of the first member into the third region.
A sawing device comprising:
- a rotatable drive shaft;
- motion conversion means for converting rotational motion of the drive shaft to the oscillatory motion of a plurality of blades, wherein the blades are configured to simultaneously provide cut lines in a surface of an object to be cut in a square or rectangular formation;
- a drill bit attachment rotatably coupled to the drive shaft, wherein, a drill bit, operatively attached to the drill bit attachment, is configured so that, when the blades are pressed against the surface, the drill bit pierces the surface thereby to anchor the sawing device when cutting.
A saw blade for attaching to a sawing device, comprising:
- a convexly curved cutting edge portion;
- a mounting structure coupled with and spaced apart from the cutting edge portion, wherein the saw blade is configured for cutting by oscillating motion about a pivot point in the mounting structure;
- wherein the cutting edge portion is shaped so that, when the saw blade is oscillated over a predetermined angle to cut into a flat surface, a cut line can be formed of substantially uniform depth.
Dependencies are inferred from the claim text.