# US 2014/0360243 A1 · Crimping head for impact wrench > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0360243 A1 - Document ID: US20140360243A1 - Status: Published application - Kind: A1 - Application number: 13/910,713 - Filed: 2013-06-05 - Published: 2014-12-11 - Earliest claimed: 2013-06-05 - Assignees: Conbraco Industries, Inc. - Applicants: Conbraco Industries, Inc. - Inventors: Glenn David MacAdams - Web page: https://patentgrep.com/patent/US20140360243A1 ## CPC - B21D 39/046: {Connecting tubes to tube-like fittings} - B21D 39/048: {using presses for radially crimping tubular elements} - B25B 27/10: inserting fittings into hoses - B25F 3/00: Associations of tools for different working operations with one portable power-drive means; Adapters therefor - B21D: WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL (working or processing of wire B21F) - B25B: TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING - B25F: COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR {(machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass B23P23/00 and subgroups)} ## Abstract A crimping head for use with an impact wrench to crimp fittings onto a structure carrying the fitting, that includes a universal adaptor having a head, and a socket positioned in the head sized and shaped to receive a standard anvil of an impact wrench without further connection between the impact wrench and the crimping head. A locking assembly is provided for cooperating with the universal adaptor head for locking the anvil into the socket, and a transmission is attached to the universal adaptor for being driven by the universal adaptor and for converting rotational movement of the anvil into selective rearward and forward movement. A jaw assembly is attached to the transmission and adapted to close into a crimping position and open into a release position responsive to the rearward and forward movement of the transmission. ## Claims ### Claim 1 A crimping head for use with an impact wrench to crimp fittings onto a structure carrying the fitting, comprising: (a) a universal adaptor having a head, and a socket positioned in the head sized and shaped to receive a standard anvil of an impact wrench without further connection between the impact wrench and the crimping head; (b) a locking assembly cooperating with the universal adaptor head for locking the anvil into the socket; (c) a transmission attached to the universal adaptor for being driven by the universal adaptor and for converting rotational movement of the anvil into selective rearward and forward movement; and (d) a jaw assembly attached to the transmission and adapted to close into a crimping position and open into a release position responsive to the rearward and forward movement of the transmission. ### Claim 2 (depends on 1) A crimping head according to claim 1, wherein the transmission comprises: (a) a housing mounted in a stationary position between the universal adaptor and the jaw assembly; (b) a mounting plate positioned for forward and rearward movement within the housing responsive to rotation of the anvil of the impact wrench; (c) a pair of drive plates mounted for pivotal movement on the mounting plate responsive to forward and rearward movement within the housing responsive to rotation of the anvil of the impact wrench; and (d) the drive plates being mounted on rearward ends of clamping arms carried by the jaw assembly, wherein outward movement of forward ends of the drive plates drives rearward ends of the clamping arms outwardly and forward ends of the clamping arms having opposing jaws inwardly into crimping position. ### Claim 3 (depends on 1) A crimping head according to claim 1, wherein the locking assembly comprises a radial split in the adaptor head through the socket and defining a gap, at least one through hole extending through the adaptor head and split, and a screw positioned in the through hole for being tightened to close the gap and lock the anvil in the socket. ### Claim 4 (depends on 1) A crimping head according to claim 1, and including a cover positioned over at least a rearward portion of the transmission. ### Claim 5 (depends on 2) A crimping head according to claim 2, wherein the universal adaptor head includes a drive screw threaded into a bore formed in the mounting plate for driving the mounting plate forwardly and rearwardly in the transmission housing. ### Claim 6 (depends on 5) A crimping head according to claim 5, wherein the drive screw includes trapezoidal screw threads. ### Claim 7 (depends on 5) A crimping head according to claim 5, and including a transmission cover positioned over at least a rearward portion of the transmission and a drive screw cover positioned over the drive screw. ### Claim 8 (depends on 1) A crimping head according to claim 1, wherein the transmission comprises: (a) an elongate housing mounted in a stationary position between the universal adaptor and the jaw assembly, and having a top and bottom defining a movement path; (b) a mounting plate positioned for forward and rearward movement within the movement path of the housing responsive to rotation of the anvil of the impact wrench; (c) a pair of drive plates mounted for pivotal movement on the mounting plate responsive to forward and rearward movement within the housing responsive to rotation of the anvil of the impact wrench; and (d) the drive plates being mounted on rearward ends of clamping arms carried by the jaw assembly, wherein outward movement of forward ends of the drive plates drives rearward ends of the clamping arms outwardly and forward ends of the clamping arms having opposing jaws inwardly into crimping position. ### Claim 9 (depends on 1) A crimping head according to claim 1, in combination with an electric impact wrench. ### Claim 10 A method of crimping a fitting onto a structure carrying the fitting; and comprising the steps of: (a) providing crimping head for use with an impact wrench to crimp fittings onto a structure carrying the fitting, comprising: a universal adaptor having a head, and a socket positioned in the head sized and shaped to receive a standard anvil of an impact wrench without further connection between the impact wrench and the crimping head; (ii) a locking assembly cooperating with the universal adaptor head for locking the anvil into the socket; (iii) a transmission attached to the universal adaptor for being driven by the universal adaptor and for converting rotational movement of the anvil into selective rearward and forward movement; and (iv) a jaw assembly attached to the transmission and adapted to close into a crimping position and open into a release position responsive to the rearward and forward movement of the transmission; and (b) activating the impact wrench to drive the jaw assembly into a crimping position.