Abstract: A power tool has a cutting element driven by a motor assembly, the motor assembly driving a fan for flowing air over the motor assembly. The power tool includes a foot plate configured to be supported on a workpiece, the foot plate defining an opening through which the cutting element extends, and at least one alignment opening arranged relative to the cutting element opening to allow the operator to visualize the cut line of the cut created by the cutting element. A motor housing is provided that supports the motor assembly on the foot plate, in which the motor housing defines a cavity substantially enclosing the motor assembly and arranged to receive airflow from the fan. A nozzle is defined in the motor housing that is configured to direct airflow from the cavity of the motor housing in an airflow line of action intersecting the at least one alignment opening.

Abstract: A cutting tool includes a tool unit including an electric motor, a rotary cutting blade rotatably driven by the electric motor, and a blade case covering at least apart of the rotary cutting blade. An electric component is disposed within the blade case at a position capable of being cooled by a flow of air produced by the rotation of the rotary cutting blade.

Abstract: A dust shroud for reciprocating saws has a shroud body with bristles, a vacuum port and an attachment collar attached to the shroud body. The shroud has a slot formed through the collar and shroud body and is expandable and collapsible to fit different sizes of reciprocating saws.

Abstract: A dust collection cover capable of efficiently collecting cutting chips and residues generated as a result of cutting a workpiece. A cutter includes a motor and a rotary blade driven by the motor, and the dust collection cover is attached to the cover for covering a part of the blade. The cover is formed with a dust discharge port through which cutting chips and residues are discharged. The cover has a guide arrangement for directing the cutting chips and residues toward an interior of the cover body. The arrangement provides a blowing-out air blowing to the workpiece, or a rod-like member removing the cutting chips and residues.

Abstract: The present invention provides a cutting machine in which a reciprocating rod is driven by a motor and projects downward at a forward portion of a housing. The housing accommodates the motor and a cooling fan for cooling the motor, and a lower end of the rod is connected to a cutting blade for cutting a workpiece. A first blow passage is provided in the housing, and cooling air generated by the cooling fan forwardly flows in a direction intersecting the rod from a rear side of the rod.

Abstract: A dust collecting vacuum hose attachment has a unitary, hollow, tubular body member. One end of an elongated cutting blade is secured within the body member and the second end extends out of the body member. A dust collection shroud is removeably attached to the upper end of the body member for the collection of dust created by use of the saw blade through a dust creating material such as wood, drywall, etc. The lower end of the body member utilizes a connection fitting for attachment to a vacuum hose, which in turn is connected to a vacuum source. Dust created during sawing is collected and accumulated within the shroud by the suction provided by the vacuum source. The dust in turn is sucked through the body member, into a vacuum hose, and then to the vacuum source. The shroud is removeable from the body member in favor of a rasp component which collects and accumulates created dust which is also discharged by means of a vacuum source.

Abstract: A powered vinyl groover includes a motor attached to a circular blade and a blade housing for covering the circular blade. The blade housing includes a duct to carry cuttings into a collection bag. Near an inlet hole of the duct is a fin, which may be a raised surface on any interior wall of the blade housing extending into the blade housing as close as possible to the blade. The fin causes airflow from the blade to be redirected towards the inlet hole of the duct so that more cuttings enter the duct and are carried by the duct through to an outlet hole to a collection bag mountable over the outlet hole of the duct. The fin may be integral with the blade housing or attached to it, and a fin may also be added to existing groovers.

Abstract: The invention relates to a machine tool (1), especially a machine tool designed as a handheld jigsaw (2), wherein an optical device (33; 59), the window (30) of which is associated with a protective system (35) against soiling and/or damage, is provided for the working field (9) of said machine tool and/or for a working line (27) in the detection surface (10) of said machine tool as a path specification.

Abstract: A powered vinyl groover includes a motor attached to a circular blade and a blade housing for covering the circular blade. The blade housing includes a duct to carry cuttings into a collection bag. Near an inlet hole of the duct is a fin, which may be a raised surface on any interior wall of the blade housing extending into the blade housing as close as possible to the blade. The fin causes airflow from the blade to be redirected towards the inlet hole of the duct so that more cuttings enter the duct and are carried by the duct through to an outlet hole to a collection bag mountable over the outlet hole of the duct. The fin may be integral with the blade housing or attached to it, and a fin may also be added to existing groovers.

Abstract: The invention is based on a hand-held power tool device, in particular a jigsaw device, having an adjusting device, which is equipped with a lever element and a mounting element for accommodating the lever element. As proposed in the invention, the mounting element is composed of a one-piece element extending 360° around an adjustment axis of the lever element.

Abstract: A portable cutting apparatus. The apparatus includes a motor and a cutting blade driven by the motor. A protective housing encloses at least a portion of the cutting blade. A vacuum impeller is disposed in a vacuum housing to generate airflow to move dust and debris created by the cutting blade into a removable vacuum bag. At least one vacuum tube directs the airflow from the protective housing to the vacuum housing. The motor operates both the cutting blade and the vacuum impeller. A bellows interconnects the protective housing and a lower platform. The lower platform pivots relative to the cutting blade about a pivot axis that is outwardly spaced from and parallel to a cutting plane defined by the cutting blade.

Abstract: A power tool is provided with a perforated material remover to remove perforated material from power tool cutting implements. The power tool also includes a rip guide which has a long guide edge and two attachment points to the shoe/base of the saw. The rip guide is attached to the base/shoe via a pair of L-shaped openings that accept L-shaped support arms of the rip guide. The rip guide can also be folded for compact storage. The power tool also includes dual bevel scales for quickly and easily setting the bevel angle on the power tool.

Abstract: A cutting tool is provided for preventing dust intrusion into a guide member effectively as well as cooling a housing, thereby maintaining an excellent operability. A cutting tool has a body housing including an upper housing and a lower housing. In front of a flange portion of the lower housing, right-and-left air outlets are provided. At the front end of the lower housing, right-and-left second guiding ports are provided. Further, between an insulating cover and the lower housing, clearances which allow the outlets and the second guiding ports to communicate with each other are provided. Therefore, when the insulating cover is placed, an air passage is formed in which cooling air discharged from the air outlets moves to the front passing through the clearances, and flows into a space as the junction through the second guiding ports to be discharged to the front.

Abstract: A self-contained vacuum circular saw is presented. The vacuum saw has a casing around the saw blade that includes an accordion type lower section attached to the lower platform of the saw. A number of vacuum tubes, preferably four, are attached to the side of the circular saw opposite the blade. The armature of the circular saw that turns the blade also turns the vacuum impeller on the side opposite the blade. An impeller vacuum chamber pulls in the dust and debris created by the saw blade and discharges the dust and debris into a disposable and removable vacuum bag. An important aspect of this device is that the motor that turns the saw blade also turns the impeller, thus making the self-contained vacuum saw moveable from site to site.

Abstract: An electric hand power tool has a housing, an air-cooled electric motor which is accommodated in the housing, a tool which is driven by the electric motor a protective hood which at least partially covers the tool, the housing having a handle and an auxiliary handle for a two-hand guidance of the hand power tool, the auxiliary handle being positioned in a plane transverse to a plane of the first-mentioned handle and, with reference to a work direction, before the first-mentioned handle, the auxiliary handle being completely hollow and having an inlet communicating with the protective hood so as to carry motor cooling air which has left the housing and passed the protective hood for the tool and then flows into the inlet of the auxiliary handle carrying debris and through the auxiliary handle and out of the latter, so that the auxiliary handle is operative for damping a flow noise of the air from the electric motor, from a motor-cooling fan and from the tool.

Abstract: A dust and particle control attachment for a saw having a housing and a rotary blade secured for rotation on a shaft extending from the housing comprising a rotary blade guard enclosing a portion of the rotary blade having one side thereof secured to the housing and the other side thereof removably secure to the one side to form a passageway for dust and particles produced during a cutting operation, the passageway having an intake end and a discharge end, a first arrangement is associated with at least one of the side and the other side of the rotary blade guard adjacent the intake end of the passageway to enable cutting inside corners of walls disposed at a predetermined angle with respect to each other both horizontally and vertically, and a second arrangement associated with at least one of the one side and the other side of the rotary blade guard to contain the dust and particles within the passageway and to direct the dust and particles to a collection means connected to the rotary blade guard adjacent

Abstract: Provided is an ergonomic cutting device for cutting casts and other rigid objects comprising an oscillating cutting blade driven by a motor, a handle, and a vacuum system. The present cutting device is designed such that the offset positioning of the motor enables the weight of the motor to help manipulate and make more efficient the device. The vacuum system cools the device and draws dust produced by the cutting blade through the device without contacting the dust with the motor or other mechanical components. The motor is designed to initially engage in an idle mode when the device is turned on, then automatically sense when a load is placed on the cutting blade and, at that point, boost to a cutting mode. The motor may also be manually placed in a higher powered turbo mode. The device also includes a dynamic braking system which enables the device to stop oscillation of the blade faster than previous device.

Abstract: A power tool provided with a rotating blade wheel having skewed axial vanes which follow the cutting blades during rotation to create an air flow which is parallel to the axis of rotation. A shroud adjacent to the blade wheel which deflects the debris created by the cutting blade away from the radial movement of the blade wheel. The debris is exhausted through the side of the power tool housing such that the power tool may be mounted directly onto a continuous flat or level surface of a work bench.

Abstract: First and second triggered D type flip flops activated by input signal pulses and input reference pulses control first and second pulse generating circuits, a set/reset latch, and a clock input of a third edge triggered D type flip flop. A three input exclusive-or gate connected to the first and second edge triggered D type flip flop and to the set/reset latch is active on the data input of the third edge triggered D type flip flop for producing a sign signal of difference frequency. First and second gating circuits and an adding circuit are controlled by the sign signal for producing output pulses of difference frequency. First, second, third, and forth edge triggered pulse generating circuits activated by the first and second edge triggered D type flip flops and the set/reset latch produce pulses, which are distributed by an electronic combinational switch to operate first and second combinational set/reset latches for producing output two phase pulses of difference frequency.