Various embodiments of the present disclosure provide powered fastener driving tools and clean lubricants for powered fastener driving tools that reduce contaminant, residue, and deposit buildup or accumulation in the powered fastener driving tools, and thus reduce necessary maintenance for such powered fastener driving tools (or increases the time intervals between such necessary maintenance of powered fastener driving tools).

A tool for working a substrate has a stator and a working piston, which is intended to move relative to the stator along a working axis and toward the substrate or to hit a fastening element, in order to drive the fastening element into the substrate, also having a drive, which is intended to drive the working piston along the working axis onto the substrate, the drive having a piston coil capacitor and a piston coil arranged on the working piston, the piston coil being electrically connectable to the piston coil capacitor in order during rapid discharge of the piston coil capacitor to have a current flowing through it and to generate a magnetic field which accelerates the working piston relative to the stator.

A tool for working a substrate, the tool having a stator and a working piston, which is intended to move relative to the stator along a working axis, also having a drive, which is intended to drive the working piston from a starting position along the working axis to the substrate, the stator having a first electrical stator contact and the working piston having a first electrical piston contact, which slides on the first electrical stator contact and is arranged on a radially outer circumference of the working piston with respect to the working axis.

A setting tool driving fastening elements, comprising a holder for a fastening element; a drive-in element transferring a fastening element in the holder into a substrate along a setting axis by a setting energy E.sub.kin of at least 30 J and at most 600 J; a drive for driving the drive-in element toward the fastening element along the setting axis, the drive comprising a capacitor, a rotor on the drive-in element; and, an excitation coil, which during discharge of the capacitor is flowed through by current and generates a magnetic field accelerating the drive-in element toward the fastening element, the drive-in element having a piston diameter d.sub.K and a piston mass m.sub.K, and wherein, for d.sub.K, $\frac{2}{3}\left(a+b{E}_{kin}^n\right)\le d_K\le \frac{4}{3}\left(a+b{E}_{kin}^n\right)$
where a=33 mm, b=6 mmJ.sup.−n and n=⅓ and/or, for m.sub.K, $ 2 3 ⁢ ( c + d ⁢ E k ⁢ i ⁢ n n ) ≤ m K ≤ 5 3 ⁢ ( c + d ⁢ E k ⁢ i DRY-FIRE BYPASS FOR A FASTENING TOOL 20180001453 · 2018-01-04 · Erin Elizabeth JASKOT, Michael P. BARON, Stuart E. GARBER A fastening tool includes a contact trip operatively associated with a contact trip switch to enable a fastener drive system to be fired when the contact trip reaches a firing position, after having engaged a work surface. If a dry-fire condition exists in a magazine connected to the fastening tool, the movement of the contact trip is completely taken up or absorbed by a biasing agent so that the contact trip switch is not closed. The biasing agent also limits the amount of force that can be applied to the contact trip switch in the event an operator slams the contact trip against a work surface or drops the fastening tool nose-first onto an unyielding surface. RETURN MECHANISM FOR A CORDLESS NAILER 20180001455 · 2018-01-04 · BLACK & DECKER INC. · Jeffrey J. MEYER, Stuart E. GARBER A driver return assembly can be positioned to return a concrete nail driver of a cordless electric powered nailer to the home position. A return rack can be fixedly coupled to and positioned along a longitudinal length of the concrete nail driver The driver return assembly can include a solenoid driving a plunger in a reciprocating motion in a homeward direction and a driven direction. A return pawl can be coupled to the plunger and pivotable into a pawl raised position relative to the plunger in which the pawl is engageable with the return rack during movement of the plunger in the homeward direction, and pivotable into a pawl lowered position relative to the plunger in which the pawl is not engageable with the return rack during movement of the plunger in the driven direction. Cordless Concrete Nailer With Removable Lower Contact Trip 20180001457 · 2018-01-04 · BLACK & DECKER INC. · Erin Elizabeth JASKOT, Stuart GARBER A removable contact trip can be received in an aperture of the barrel and can be slidable between a retracted position and an extended position relative to an end of the barrel. The removable contact trip can define a muzzle aperture aligned with the driver axis and through which a fastener is driven by the nail driver. The removable contact trip can include a latch pocket. A removable contact trip latch can be biased toward a latched position in which the removable contact trip latch extends through a window of the barrel and is receivable in the latch pocket to latch the removable contact trip to the barrel. The removable contact trip latch can also be movable to an unlatched position in which the removable contact trip latch is not receivable in the latch pocket to unlatch and permit removal of the contact trip from the barrel. CORDLESS CONCRETE NAILER WITH IMPROVED POWER TAKE-OFF MECHANISM 20180001456 · 2018-01-04 · BLACK & DECKER INC. · Stuart E. GARBER A power take-off (PTO) assembly of a cordless electric concrete driver includes a bracket supporting a solenoid and a compression spring and a linkage arm coupled between a plunger of the solenoid and the compression spring. The linkage arm is biased by the compression spring toward the nail driver. A carrier supports or carries a pinch roller and the carrier is pivotably mounted to the bracket via a pivot pin. An engaging surface is movable with the plunger between an engagement position in which the engaging surface engages a cooperating engaging surface of the carrier and orients the carrier into a corresponding engagement orientation, and a disengagement position in which the engaging surface is spaced away from the cooperating engaging surface of the carrier, allowing the carrier to pivot outside the corresponding engagement orientation. HAND-HELD POWER TOOL AND DEVICE COMPRISING THE HAND-HELD POWER TOOL 20180009096 · 2018-01-11 · Mario GRAZIOLI, Karsten RIX, Joerg STAMM The invention relates to a hand-held tool, in particular a nail-setting device, comprising a handle for manual actuation of the hand-held tool, an interface for fastening the hand-held tool to a remote actuation device, a control apparatus for controlling the hand-held tool in a manual mode and in a remote actuation mode, and a querying apparatus for querying whether the hand-held tool is fastened to a remote actuation device, wherein the control apparatus controls the hand-held tool in the manual mode if the querying apparatus detects that the hand-held tool is not fastened to a remote actuation device, and wherein the control apparatus controls the hand-held tool in the remote actuation mode if the querying apparatus detects that the hand-held tool is fastened to a remote actuation device. Pneumatic tool 11707825 · 2023-07-25 · Max Co., Ltd. · Kazuya Mochizuki, Kousuke Moriwaki, Hiroshi Tanaka A pneumatic tool includes a drive part configured to be driven by compressed air, a control valve configured to switch the presence or absence of operation of the drive part, an on-off valve part configured to switch the presence or absence of operation of the control valve, and a timer part configured to control the operation of the on-off valve part and switch the presence or absence of operation of the control valve after a lapse of a predetermined time. The timer part comprises a timer piston configured to move in one direction and perform timekeeping, and a timer piston housing configured to support a shaft of the timer piston. The timer piston housing is provided with a groove on a guide surface of the shaft of the timer piston, the groove being configured to expand a flow path formed between the shaft and the guide surface. $