Disclosed are a saw blade quick-change structure for electric tools, and a saw blade quick-change method. The saw blade quick-change structure for electric tools comprises a locking mechanism, a head shell, a tool rest and a quick-change buckle. The locking mechanism is installed in the head shell and used for fixing or releasing a saw blade. The tool rest is installed at the bottom of the head shell. The quick-change buckle is hinged to the head shell and used for controlling the locking mechanism to lock or release the saw blade. The locking mechanism comprises a movable rod, a locking rod, a collet chuck, a locking block, a stop collar and a return spring. The collet chuck is located below the movable rod. The locking rod is clamped by the collet chuck. The locking block and the stop collar are used for controlling the collar chuck to open or close. The return device is used for returning the locking block. The saw blade is assembled and disassembled through the cooperation of the collet chuck and the locking block; when assembling and disassembling the saw blade, users just need to rotate the quick-change trigger snap, then take out the locking rod, change the saw blade on the locking rod, and then reassemble the locking rod and rotate the quick-change trigger snap to fasten the locking rod, and the process is quick and simple.

Disclosed are a saw blade quick-change structure for electric tools, and a saw blade quick-change method. The saw blade quick-change structure for electric tools comprises a locking mechanism, a head shell, a tool rest and a quick-change buckle. The locking mechanism is installed in the head shell and used for fixing or releasing a saw blade. The tool rest is installed at the bottom of the head shell. The quick-change buckle is hinged to the head shell and used for controlling the locking mechanism to lock or release the saw blade. The locking mechanism comprises a movable rod, a locking rod, a collet chuck, a locking block, a stop collar and a return spring. The collet chuck is located below the movable rod. The locking rod is clamped by the collet chuck. The locking block and the stop collar are used for controlling the collar chuck to open or close. The return device is used for returning the locking block. The saw blade is assembled and disassembled through the cooperation of the collet chuck and the locking block; when assembling and disassembling the saw blade, users just need to rotate the quick-change trigger snap, then take out the locking rod, change the saw blade on the locking rod, and then reassemble the locking rod and rotate the quick-change trigger snap to fasten the locking rod, and the process is quick and simple.

An accessory for an oscillating power tool includes an attachment portion configured to be coupled to an oscillating power tool and a working portion coupled to the attachment portion and extending generally along a longitudinal axis. The working portion has a generally planar wedge shape bounded at least partially by a rear non-cutting end with a first width, a front cutting edge opposite the rear edge with a second width that is greater than the first width, a first side cutting edge extending from a first end of the rear end to a first end of the front cutting edge at a first angle to the longitudinal axis, and a second side cutting edge opposite the first side cutting edge and extending from a second end of the rear end to a second end of the front cutting edge at a second angle to the longitudinal axis.

A blade including a body having an untoothed distal edge. A plurality of recesses are recessed from distal ends of the distal edge. The blade also includes a plurality of carbide tips attached to the body to form a toothed portion configured to perform a cutting operation. Each of the carbide tips is received in a respective one of the recesses. Each of the carbide tips at least mostly fills the respective one of the recesses.

A blade includes an attachment portion having a mounting aperture, the attachment portion configured to couple with an oscillating power tool. The blade also includes a body extending from the attachment portion in a direction defining a longitudinal axis. The body includes a cutting edge having teeth and a distal end generally opposite the attachment portion. The cutting edge is recessed from the distal end.

A blade having an attachment portion including an aperture defining an anchor center, the attachment portion configured to couple with an oscillating power tool. The blade also has a first blade portion having a first cutting edge, and a second blade portion having a second cutting edge. The first and second blade portions are generally coplanar and extend away from the attachment portion in an outward direction. The first cutting edge has a first horizontal linear dimension measured perpendicular to the outward direction, the first horizontal linear dimension being 3.5 to 4.0 inches to generally correspond with a first dimension of a single outlet gang box. The second cutting edge has a second horizontal linear dimension measured perpendicular to the outward direction, the second horizontal linear dimension being 2.1 to 2.6 inches to generally correspond with a second dimension of the single outlet gang box.

An accessory for an oscillating power tool includes an attachment portion configured to be coupled to an oscillating power tool and a working portion extending generally along a longitudinal axis. The working portion has a rear end portion coupled to the attachment portion, a front cutting edge opposite the rear end portion, a first side edge extending from the front cutting edge to the rear end portion, and a second side edge opposite the first side edge and extending from the front cutting edge to the rear end portion. The working portion includes an at least partially curved surface that contains the longitudinal axis. At least a portion of the first side edge includes a first side cutting edge portion.

A surgical sagittal saw cartridge that includes a guide bar formed from an inner plate and opposed outer plates, the inner plate defining a head. The cartridge has a blade that is disposed against the head of the inner plate. The inner plate may comprise an inner tine and/or two opposed outer tines. The inner tine may be formed to define the head against which the blade is disposed. The outer tines may extend distally so as to define a space between the outer tines in which the blade is seated.

An accessory tool for an oscillating power tool includes a support arm portion having a first lateral edge and a second lateral edge and a blade portion extending from a forward end portion of the support arm portion generally in a lateral direction. The blade portion includes a cutting edge arranged facing in the forward direction and a trailing edge that faces toward the mounting portion. The mounting portion defines a central axis which intersects the oscillating axis when the mounting portion is attached to a tool holder of the oscillating power tool. The first lateral edge of the support arm portion and the trailing edge of the blade portion define an open region which is interposed between the blade portion and the mounting portion. The central axis intersects the open region and both the trailing edge and the cutting edge of the blade portion.

An oscillating blade for cutting or shaping sheet materials such as drywall, with a blade, a sharing portion, a depth gauge for determining depth of cut, a caliper portion for premarking sheet materials for a standard dimension cut, and a reverse direction blade.