Abstract: An elongated drill bit has a shank at one end and working end at the other. A flute portion is between the working end and the shank. The flute portion is continuous with the shank and working end and is generally unitarily formed with them. The flute portion has at least one flute with a helix angle between approximately 30° and 35°. The working end has a pilot tip with a cutting portion. A tapered web is formed in the flute portion, a thickness of the web at the tip of the working end is about 9% to 15% of the nominal diameter.

Abstract: A bi-metal drill bit includes a body defining a cutting end and a shank end. At least a portion of the cutting end is formed of a first metal section and at least a portion of the shank end is formed of a second metal section that is welded to the first metal section. The first metal section has a first metal having a material hardness that is higher than a second material hardness of the second metal section. One of the first and second metal sections is treated either by coating or oxide treating so as to have a recognizable different appearance than the other of the first and second metal sections. A length to diameter ratio of the first metal section has been optimized to allow electrical resistance welding, provide better strength in the rear end after the tip breaks through a workpiece, and to minimize cost.

Abstract: A spa nozzle has a fluidic oscillator for oscillating a jet of water back and forth through an outlet aperture and a pair of diverging sidewalls extending downstream of the outlet aperture for issuing a sweeping jet of water into the spa. An air entrainment port is formed in each diverging sidewall downstream of the outlet aperture. The top and bottom walls in the oscillator interaction region diverge sufficiently so as to provide a relatively large outlet aperture area but not so large as to cause the jet to roll as it exits the outlet aperture, and wherein the ratio of the depth D of the power nozzle to the width W thereof is from about 2.9 to about 3.1 and the ratio of the depth D of the outlet throat to the width W thereof is from about 4.4 to about 4.6.

Abstract: A driver for driving a threaded fastener includes a shank and a sleeve. The shank has a rear portion configured to be coupled to a power tool. The sleeve defines a bore having a round rear portion and a polygonal front socket. An inner shaft has a round rear portion received in the bore and a polygonal front portion that matches the polygonal socket and that includes a magnet holder with front and rear magnetic portions. An actuator is coupled to the inner shaft to move the inner shaft between a rear position where the front magnetic portion is within the socket, and a front position where the front magnetic portion is exposed from the socket for cleaning. The rear magnetic portion magnetically attracts the inner shaft toward a rear end of the internal bore to bias the inner shaft toward the rear position.

Abstract: A dust collector is disclosed for use with a drill bit or a depth stop that is coupled to a drill bit. The dust collector includes a rear attachment portion configured to be axially fixed to a drill bit or to a drill bit depth stop that is axially fixed to a drill bit. An intermediate non-collapsible portion is attached to a front end of the rear attachment portion. The intermediate non-collapsible portion defines a dust-collecting pocket and is structured to inhibit collapse as the drill bit is inserted into a workpiece. A front collapsible portion is attached to a front end of the intermediate non-collapsible portion and at least partially collapses as the drill bit is inserted into a workpiece.

Abstract: A depth gauge for use with a drill bit includes a body configured to receive a drill bit, a retention mechanism coupled to the body and configured to removably couple the body to the drill bit, and a cap configured to be removably coupled to the body. The cap can be coupled to the body in one of a first position relative to the body where the cap contacts a workpiece surface to prevent the drill bit from entering the workpiece more than a first depth, and a second position relative to the body where the cap contacts the workpiece surface to prevent the drill bit from entering the workpiece more than a second depth that is different from the first depth.

Abstract: A drill bit has a shank portion having a plurality of SDS-type slots, a cutting portion comprising at least one cutting flute, and an intermediate portion connecting the shank to the cutting portion, the intermediate portion including at least one longitudinal slot. A depth gauge includes a body configured to receive the drill bit, a retention mechanism coupled to the body and having an inward projection to removably couple the body to the at least one additional slot in the drill bit, and a cap coupled to the body such that the cap contacts a workpiece surface to prevent the drill bit from entering the workpiece more than a predetermined depth, wherein the cap is movable relative to the body among a plurality of positions, wherein each of the plurality of positions corresponds to a different predetermined drilling depth.

Abstract: A magnet nut driver is provided with a cleanable magnet.

Abstract: A drill bit has a shank portion having a plurality of SDS-type slots, a cutting portion comprising at least one cutting flute, and an intermediate portion connecting the shank to the cutting portion, the intermediate portion including at least one additional slot. A depth gauge includes a body configured to receive the drill bit, a retention mechanism coupled to the body and having an inward projection to removably couple the body to the at least one additional slot in the drill bit, and a cap coupled to the body such that the cap contacts a workpiece surface to prevent the drill bit from entering the workpiece more than a predetermined depth, wherein the cap is movable relative to the body among a plurality of positions, wherein each of the plurality of positions corresponds to a different predetermined drilling depth.

Abstract: A tool holder for use with a power tool includes an input shaft with a rear portion couplable to a power tool, and an output shaft with a front portion couplable to a tool bit. A clutch assembly releasably non-rotationally couples a front portion of the input shaft to a rear portion of the output shaft, and includes a recess in the front portion of the input shaft or the rear portion of the output shaft, an aperture in the other of the front portion of the input shaft or the rear portion of the output shaft, a roller received in the aperture, and a spring that biases the roller radially inwardly toward the recess. The spring enables release of the roller radially outwardly from the recess when a predetermined torque threshold is exceeded, such that torque is not transmitted from the input shaft to the output shaft.

Abstract: A bit holder assembly for a rotary hand or powered tool, includes a body having a hex shank at its rearward end and a retraction collar slidably disposed on the body. The body has a coaxial hex socket formed therein to allow a tool bit to be inserted thereinto. A coil spring biases the retraction collar forwardly and biases a retaining clip toward the bottom of an angular slot formed in the body. The bit is removed by sliding the retraction collar rearwardly, to compress the coil spring and allow the retaining clip to retract back up the slot. A ring magnet is disposed at the forward end of the retraction collar to magnetize a fastener to retain the fastener to the bit.

Abstract: An anchor installation tool has an elongated driving member with a body portion and a head portion. A retaining mechanism retains the anchor installation to the drill bit. The mechanism has a housing on the body portion with a pair of bias lugs that project through the body portion to contact the drill bit. An anchor guide slides on the body and head portion and has a holding member to hold an anchor. The anchor is held in the anchor guide and a drill bit is inserted into the driving member. Axial movement of the drill bit is transferred into axial movement of the driving member. The movement strikes the anchor and ejects the anchor from the anchor guide into a surface.

Abstract: An anchor installation tool has an elongated driving member with a body portion and a head portion. A retaining mechanism retains the anchor installation to the drill bit. The mechanism has a housing on the body portion with a pair of bias lugs that project through the body portion to contact the drill bit. An anchor guide slides on the body and head portion and has a holding member to hold an anchor. The anchor is held in the anchor guide and a drill bit is inserted into the driving member. Axial movement of the drill bit is transferred into axial movement of the driving member. The movement strikes the anchor and ejects the anchor from the anchor guide into a surface.

Abstract: A tool holder for use with a power tool includes an input shaft with a rear portion couplable to a power tool, and an output shaft with a front portion couplable to a tool bit. A clutch assembly releasably non-rotationally couples a front portion of the input shaft to a rear portion of the output shaft, and includes a recess in the front portion of the input shaft or the rear portion of the output shaft, an aperture in the other of the front portion of the input shaft or the rear portion of the output shaft, a roller received in the aperture, and a spring that biases the roller radially inwardly toward the recess. The spring enables release of the roller radially outwardly from the recess when a predetermined torque threshold is exceeded, such that torque is not transmitted from the input shaft to the output shaft.