# US 10,500,703 B2 · Pyrotechnic driving device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,500,703 B2 - Document ID: US10500703B2 - Status: Granted - Kind: B2 - Application number: 15/122,966 - Filed: 2015-03-24 - Published: 2017-04-13 - Granted: 2019-12-10 - Earliest claimed: 2014-03-28 - Assignees: Hilti Aktiengesellschaft - Applicants: Hilti Aktiengesellschaft - Inventors: Matthias Blessing - Web page: https://patentgrep.com/patent/US10500703B2 ## CPC - B25C 1/143: {trigger operated} - B25C: HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS (for shoemaking A43D) ## Abstract A driving device is provided comprising a hand-held housing with a piston member arranged therein for transmitting energy to a securing element to be driven in; an interchangeable propellant charge and a combustion chamber arranged between the propellant charge and the piston member, the combustion chamber extending around a central axis (A); and an actuator, by which the energy transmitted by the propellant charge to the piston member can be variably adjusted. The driving device also includes a blow-off channel connected to the combustion chamber that can be exposed by a movable slide of the actuator and the movable slide comprises a body which completely encircles the central axis (A). ## Claims ### Claim 1 A driving-in device, comprising: a hand-held housing with a piston element therein for transmitting an amount of energy to a fastening element to be driven in; a replaceable propelling charge; a combustion chamber provided between the replaceable propelling charge and the piston element, the combustion chamber extending about a central axis; a piston guide located in front of the combustion chamber, wherein the piston guide is rotatable relative to the hand-held housing about the central axis axis; a blow-off channel connected to the combustion chamber; and, an actuator that is adjustable to modify the amount of energy to be transmitted to the piston element by the replaceable propelling charge, the actuator comprising a movable slide comprising a body which completely encircles the central axis, wherein the moveable slide is supported in a forced guide, and the moveable slide is rotated about the central axis to adjust a cross section of the blow-off channel, and rotation of the moveable slide about the central axis moves the moveable slide in a direction of the central axis and releases gas from the combustion chamber into the blow-off channel, and the piston guide and the moveable slide are axially moveable relative to each other and unrotatable relative to each other. ### Claim 2 (depends on 1) The driving-in device as claimed in claim 1, wherein the forced guide comprises a multi-start thread. ### Claim 3 (depends on 1) The driving-in device as claimed in claim 1, wherein the actuator comprises an operating unit that is pivotable about the central axis. ### Claim 4 (depends on 3) The driving-in device as claimed in claim 3, wherein the moveable slide has a cylindrical inner wall formed as part of the combustion chamber. ### Claim 5 (depends on 3) The driving-in device as claimed in claim 3, wherein the operating unit and the moveable slide are connected in a rotationally fixed manner. ### Claim 6 (depends on 1) The driving-in device as claimed in claim 1, comprising a piston guide located in front of the combustion chamber, wherein the piston guide is rotatable relative to the housing about the central axis. ### Claim 7 (depends on 5) The driving-in device as claimed in claim 5, wherein the moveable slide has a collar that encircles the central axis, which engages in an overlapping manner in a recess of a combustion chamber housing, wherein at least part of the blow-off channel is formed as an axially extending recess between the collar and the combustion chamber housing. ### Claim 8 (depends on 5) The driving-in device as claimed in claim 5, wherein the moveable slide has a cylindrical inner wall formed as part of the combustion chamber. ### Claim 9 (depends on 1) The driving-in device as claimed in claim 1, wherein the moveable slide has a cylindrical inner wall formed as part of the combustion chamber. ### Claim 10 (depends on 2) The driving-in device as claimed in claim 2, wherein the moveable slide has a cylindrical inner wall formed as part of the combustion chamber. ### Claim 11 (depends on 2) The driving-in device as claimed in claim 2, wherein the actuator comprises an operating unit that is pivotable about the central axis. ### Claim 12 (depends on 6) The driving-in device as claimed in claim 6, wherein the actuator comprises an operating unit that is pivotable about the central axis. ### Claim 13 (depends on 2) The driving-in device as claimed in claim 2, comprising the piston guide located in front of the combustion chamber, wherein the piston guide is rotatable relative to the housing about the central axis. ### Claim 14 (depends on 5) The driving-in device as claimed in claim 5, comprising the piston guide located in front of the combustion chamber, wherein the piston guide is rotatable relative to the housing about the central axis. ### Claim 15 (depends on 3) The driving-in device as claimed in claim 3, wherein the moveable slide has a collar that encircles the central axis, which engages in an overlapping manner in a recess of a combustion chamber housing, wherein at least part of the blow-off channel is formed as an axially extending recess between the collar and the combustion chamber housing. ### Claim 16 (depends on 1) The driving-in device as claimed in claim 1, wherein the moveable slide has a collar that encircles the central axis, which engages in an overlapping manner in a recess of a combustion chamber housing, wherein at least part of the blow-off channel is formed as an axially extending recess between the collar and the combustion chamber housing. ### Claim 17 (depends on 6) The driving-in device as claimed in claim 6, wherein the moveable slide has a collar that encircles the central axis, which engages in an overlapping manner in a recess of a combustion chamber housing, wherein at least part of the blow-off channel is formed as an axially extending recess between the collar and the combustion chamber housing. ### Claim 18 (depends on 2) The driving-in device as claimed in claim 2, wherein the moveable slide has a collar that encircles the central axis, which engages in an overlapping manner in a recess of a combustion chamber housing, wherein at least part of the blow-off channel is formed as an axially extending recess between the collar and the combustion chamber housing. ### Claim 19 (depends on 6) The driving-in device as claimed in claim 6, wherein the moveable slide has a cylindrical inner wall formed as part of the combustion chamber. ### Claim 20 (depends on 14) The driving-in device as claimed in claim 14, wherein the moveable slide has a cylindrical inner wall formed as part of the combustion chamber. ### Claim 21 (depends on 16) The driving-in device as claimed in claim 16, wherein the moveable slide has a cylindrical inner wall formed as part of the combustion chamber.