# US 2023/0264332 A1 · Powered fastener driver > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0264332 A1 - Document ID: US20230264332A1 - Status: Published application - Kind: A1 - Application number: 18/110,595 - Filed: 2023-02-16 - Published: 2023-08-24 - Earliest claimed: 2022-02-18 - Assignees: Milwaukee Electric Tool Corporation - Applicants: Milwaukee Electric Tool Corporation - Inventors: Mitchell T. Neuhoff; Mark C. Hughes; Jacob N. Zimmerman; Ivan N. Zozulya; Travis W. Leathrum; Troy C. Thorson; Michael B. Koeppel; Bradley S. Houskamp; Lokeshwaran Rajendran; Mitchell A. Ellena; David C. Graf; Caleb M. Schober - Web page: https://patentgrep.com/patent/US20230264332A1 ## CPC - B25C 1/003: {for belts of nails} - B25C 1/008: {Safety devices} - B25C 1/04: operated by fluid pressure {, e.g. by air pressure} - B25C 1/047: {Mechanical details} - B25C 1/06: operated by electric power - B25C: HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS (for shoemaking A43D) ## Abstract A powered fastener driver includes a housing, a nosepiece extending from the housing, a driver blade movable within the nosepiece between a ready position and a driven position the driver blade comprising a plurality of drive teeth on a first side of the driver blade and a plurality of locking projections on a second side of the driver blade, a piston coupled to the driver blade for movement therewith, a driver cylinder within which the piston is movable, a storage chamber cylinder containing pressurized gas therein and in fluid communication with the driver cylinder, a first end of the driver cylinder being affixed to a corresponding first end of the storage chamber cylinder, and a latch actuator assembly adjacent the driver blade, wherein the latch actuator assembly includes a latch to engage one of the plurality of locking projections to prevent the driver blade from moving toward the driven position. ## Claims ### Claim at position 1 -23. (canceled) ### Claim 24 A powered fastener driver comprising: a housing; a nosepiece extending from the housing; a driver blade movable within the nosepiece between a ready position and a driven position, the driver blade comprising a plurality of drive teeth on a first side of the driver blade and a plurality of locking projections on a second side of the driver blade; a piston coupled to the driver blade for movement therewith; a driver cylinder within which the piston is movable; a storage chamber cylinder containing pressurized gas therein and in fluid communication with the driver cylinder, a first end of the driver cylinder being affixed to a corresponding first end of the storage chamber cylinder; and a latch actuator assembly adjacent the driver blade, wherein the latch actuator assembly includes a latch to engage one of the plurality of locking projections to prevent the driver blade from moving toward the driven position. ### Claim 25 (depends on 24) The powered fastener driver of claim 24, wherein the latch actuator assembly further comprises a shuttle housing with a shuttle movably disposed therein, wherein the shuttle is movable to rotate the latch away from the plurality of locking projections to allow the driver blade to move to the driven position. ### Claim 26 (depends on 25) The powered fastener driver of claim 25, further comprising a lifting mechanism having a rotatable lifter with a cam formed thereon, wherein as the lifter rotates the cam moves the shuttle into the shuttle housing to disengage the latch from the plurality of locking projections to allow the driver blade to move to the driven position. ### Claim 27 (depends on 26) The powered fastener driver of claim 26, wherein the cam engages the shuttle over an angle that is greater than or equal to 25.0°. ### Claim 28 (depends on 27) The powered fastener driver of claim 27, wherein the cam engages the shuttle over an angle that is less than or equal to 50.0°. ### Claim 29 (depends on 25) The powered fastener driver of claim 25, wherein the latch actuator assembly includes a first shuttle spring and a second shuttle spring installed in compression between a closed end of the shuttle housing and the shuttle to bias the shuttle outward from an open end of the shuttle housing. ### Claim 30 (depends on 29) The powered fastener driver of claim 29, wherein the first shuttle spring and the second shuttle spring are parallel to each other and parallel to a longitudinal axis of the shuttle housing. ### Claim 31 (depends on 28) The powered fastener driver of claim 28, wherein the lifter includes a peripheral notch below the cam that provides clearance for the driver blade to move to the driven position when the latch is disengaged from the plurality of locking projections. ### Claim 32 (depends on 31) The powered fastener driver of claim 31, wherein the peripheral notch overlaps the cam in an axial direction and extends along an angle that is greater than or equal to 60.0°. ### Claim 33 (depends on 32) The powered fastener driver of claim 32, wherein the peripheral notch extends along an angle that is less than or equal to 120.0°. ### Claim 34 A powered fastener driver comprising: a housing; a nosepiece extending from the housing; a driver blade movable within the nosepiece between a ready position and a driven position, the driver blade comprising a plurality of drive teeth on a first side of the driver blade and a plurality of locking projections on a second side of the driver blade; a piston coupled to the driver blade for movement therewith; a driver cylinder within which the piston is movable; a storage chamber cylinder containing pressurized gas therein and in fluid communication with the driver cylinder, a first end of the driver cylinder being affixed to a corresponding first end of the storage chamber cylinder; a latch actuator assembly adjacent the driver blade, wherein the latch actuator assembly includes a latch to engage one of the plurality of locking projections to prevent the driver blade from moving toward the driven position; and a lifting mechanism having a rotatable lifter with a cam formed thereon, wherein as the lifter rotates the cam moves a shuttle operably coupled to the latch to disengage the latch from the plurality of locking projections to allow the driver blade to move to the driven position. ### Claim 35 (depends on 34) The powered fastener driver of claim 34, wherein the lifter includes a central hub with an upper disk radially outward from the central hub and a cam formed on the upper disk to engage the shuttle and move the shuttle into a shuttle housing on the latch actuator assembly as the lifter rotates. ### Claim 36 (depends on 35) The powered fastener driver of claim 35, wherein the lifter further includes a lower disk extending radially outward from the central hub and distanced from the upper disk and a plurality of drive pins extending between the upper disk and the lower disc, wherein the drive pins engage the plurality of drive teeth on the driver blade as the lifter rotates to move the driver blade to the ready position. ### Claim 37 (depends on 36) The powered fastener driver of claim 36, further comprising a magnet disposed on the upper disk adjacent the cam, wherein the magnet is detected by a sensor to de-energize a motor coupled to the lifter when the driver blade is in the ready position. ### Claim 38 (depends on 37) The powered fastener driver of claim 37, wherein the upper disk includes an alignment feature extending therefrom and the lifter further includes a magnet retainer having a first pocket formed therein to fit over the alignment feature and a second pocket radially offset from the first pocket and configured to receive the magnet. ### Claim 39 (depends on 38) The powered fastener driver of claim 38, wherein the first pocket and the second pocket are radially offset by an offset angle that is greater than or equal to 5.0°. ### Claim 40 (depends on 39) The powered fastener driver of claim 39, wherein the offset angle is less than or equal to 20.0°. ### Claim at position 19 -56. (canceled) ### Claim 57 A powered fastener driver comprising: a housing; a nosepiece extending from the housing; a driver blade movable within the nosepiece between a ready position and a driven position, the driver blade comprising a plurality of drive teeth on a first side of the driver blade and a plurality of locking projections on a second side of the driver blade; a piston coupled to the driver blade for movement therewith; a driver cylinder within which the piston is movable; a storage chamber cylinder containing pressurized gas therein and in fluid communication with the driver cylinder, a first end of the driver cylinder being affixed to a corresponding first end of the storage chamber cylinder; a latch actuator assembly adjacent the driver blade, wherein the latch actuator assembly includes a latch to engage one of the plurality of locking projections to prevent the driver blade from moving toward the driven position; and a lifting mechanism having a rotatable lifter with a plurality of drive pins that engage the drive teeth on the driver blade to move the driver blade to the ready position, wherein the lifter further comprises a cam formed on an upper surface thereof to actuate the latch assembly and release the driver blade to the driven position, and a magnet nested within the cam, wherein the magnet is sensed by a sensor to de-energize a motor coupled to the lifter when the driver blade is moved to the ready position. ### Claim 58 (depends on 57) The powered fastener driver of claim 57, wherein the lifter includes a central hub with an upper disk radially outward from the central hub and a lower disk extending radially outward from the central hub and distanced from the upper disc, wherein the cam is formed on the upper disk of the lifter. ### Claim 59 (depends on 58) The powered fastener driver of claim 58, wherein the lifter further includes a magnet retainer disposed on the upper disk adjacent the cam. ### Claim 60 (depends on 59) The powered fastener driver of claim 59, wherein the magnet retainer includes a first pocket that fits over an alignment feature on the upper disk and a second pocket in which the magnet is disposed. ### Claim 61 (depends on 60) The powered fastener driver of claim 60, wherein the first pocket and the second pocket are radially offset from each other. ### Claim 62 (depends on 57) The powered fastener driver of claim 57, wherein the driver blade is formed with a guide groove at least partially along a length of the driver blade and the latch actuator assembly includes a guide rib extending perpendicularly from a lower surface of a base plate of the latch actuator assembly. ### Claim 63 (depends on 62) The powered fastener driver of claim 62, wherein the guide rib is sized and shaped to fit into the guide groove of the driver blade and acts as a guide for the driver blade as it moves between the ready position and the driven position. ### Claim 64 (depends on 57) The powered fastener driver of claim 57, wherein the driver blade further includes an actuator tooth extending perpendicular to the plurality of drive teeth. ### Claim 65 (depends on 64) The powered fastener driver of claim 64, wherein the actuator tooth actuates a fastener delivery mechanism and loads a fastener into the nosepiece as the driver blade is returned to the ready position from the driven position. ### Claim at position 29 -107. (canceled)