A hole saw includes a base member configured to secure the hole saw to a drive device and a blade member extending orthogonally from each side of the base member. Each blade member is configured having respective distal ends that flex transversely to a longitudinal cutting direction of the blade member. Responsive to rotational movement of the hole saw via the drive device against a structure, a medial location of each blade member creates an initial respective linear cutting path into the structure, and further movement of the respective blade members into the structure cause the distal ends of the respective blade members to flex transversely to the cutting direction and follow the initial linear cutting path despite the rotational movement of the hole saw relative to the structure to produce a linear cut through the structure.

An oscillating interface for an oscillating too includes a post, a pin which extends through the post, a flange slidably positioned on the post between the pin and a distal end of the post. The flange includes a drive side and a mounting side. The drive side includes a drive structure configured to interlock with a drive structure of an accessory tool. The mounting side is arranged facing the pin and defines at least one notch configured to receive the pin. A clamping member is configured to be threaded onto the post and to clamp the flange against the pin with the pin received in the notch.

An oscillating interface for an oscillating too includes a post, a pin which extends through the post, a flange slidably positioned on the post between the pin and a distal end of the post. The flange includes a drive side and a mounting side. The drive side includes a drive structure configured to interlock with a drive structure of an accessory tool. The mounting side is arranged facing the pin and defines at least one notch configured to receive the pin. A clamping member is configured to be threaded onto the post and to clamp the flange against the pin with the pin received in the notch.

The present invention proposes a rapid replacing structure for multi-purpose saw, including the operating mechanism, clamping mechanism and collet; the collet is released or clamped by driving the clamping mechanism through the operating mechanism; in addition, the structure also comprises an output shalt whose top and bottom openings form a chamber; the collet is placed in the output shaft; the clamping mechanism comprises a spring element that clings to the outer side of collet, a collet sleeve and a compressor arm; one end of the spring element is connected to the bottom wall of chamber, while the other is connected with the collet sleeve; there is also an output cover designed to limit the compressor arm; the top of compressor arm is connected in a contacted manner to the operating mechanism by passing through the output cover; the operating mechanism pushes the compressor arm down to drive the collet sleeve to move downward, thereby releasing the collet; in addition, a tension board is arranged in the collet to fix the top-end tool. The present application is easy to operate and designed for rapid replacement of operating tools.

The invention is directed to an attachment for an oscillating or reciprocating tool. More specifically, the attachment is used to cut shingle. The attachment comprises a cutting portion comprising an attachment member adapted to be received by a head of the oscillating tool. The attachment also comprises a guiding portion operatively connected to the cutting portion. The guiding portion comprises at least one winglet defining a surface substantially parallel to the cutting portion and located at a pre-determined distance from the cutting portion. In use, the at least one surface is in contact with a guiding surface and trims material that exceeds the pre-determined distance as the tool is moved forward and parallel to the reference surface.

The present invention discloses a method of manufacturing a tool with a cutting edge comprising a substrate for supporting and a cladding layer for forming the cutting edge, and a transition zone connecting the substrate and the cladding layer; the method of manufacturing it includes: providing a first material used for forming the substrate and having a first side; providing a second material which is clad onto the first side by way of laser cladding to form the cladding layer, and forming a transition zone between the cladding layer and the substrate where the first material and the second material are metallurgically bonded. The tool obtained by adopting the manufacturing process according to the present invention combines the following advantages: good toughness of the cutter body, high hardness of the cutting edge, not easy breaking off of the cutter body and the cutting edge, and long service life.

An orthopedic cast removal apparatus comprises a housing having a portion that can be gripped by an operator during use. A motor is located inside the housing. A blade is operatively connected to and driven by the motor via a drive mechanism, the blade defining a cutting edge having cutting teeth located thereon. The drive mechanism according to this aspect has a driven element with an axis of rotation substantially parallel to a surface of an orthopedic cast when it is cut. The blade is connected to the driven element at a connection point that moves periodically around the axis of rotation. As a result, the cutting edge of the blade engages material of the orthopedic cast in a galloping fashion.

A surgical saw blade including a cutting edge, blade body and a coupling for connecting the blade body to a handpiece. The blade body at least partially includes a composite material that helps to confer optimal weight and rigidity to the saw blade to allow for minimal vibration during use and minimal mechanical load on the handpiece.

A handheld oscillating tool includes a blade attachment system having a tool mounting portion configured to enable the tool mounting portion to be releasably secured to a tool holder of an oscillating tool such that the blade attachment system oscillates with the tool holder and a blade mounting portion configured to releasably retain a blade with a planar body of the blade arranged substantially perpendicular to the oscillation axis and with one of the leading edge and the trailing edge of the blade positioned forwardly with respect to the tool mounting portion.

There is provided a blade for an oscillating power tool having an elongate body fixed to an attachment section. The elongate body is divided into two or more resiliently flexible tongue portions, and each tongue portion includes a cutting portion distal from the attachment section. A depth stop may be attached to the elongate body. There is also provided a method of using an oscillating power tool. In the method, a power tool is activated to oscillate a blade. The oscillating blade is inserted into a channel filled with material, and the power tool is twisted to cause the tongue portions to engage at least opposing walls of the channel.