# US 11,110,580 B2 · Pneumatic percussive tool with attachments and method of use thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,110,580 B2 - Document ID: US11110580B2 - Status: Granted - Kind: B2 - Application number: 16/291,478 - Filed: 2019-03-04 - Published: 2019-09-26 - Granted: 2021-09-07 - Earliest claimed: 2018-03-22 - Applicants: James Kevin Panks - Inventors: James Kevin Panks - Web page: https://patentgrep.com/patent/US11110580B2 ## CPC - B25D 9/08: comprising a built-in air compressor {, i.e. the tool being driven by air pressure} - B25D 17/005: {Attachments or adapters placed between tool and hammer} - B25D 9/16: Valve arrangements therefor {(B25D9/145 takes precedence)} - B25D 17/02: Percussive tool bits {(drill bits for earth drilling E21B10/00)} - B25D 2217/0042: Ball-shaped locking members - B25D 2250/005: Adjustable tool components; Adjustable parameters - B25D 2250/051: Couplings, e.g. special connections between components - B25D 2250/171: Percussive pulling action of tools for extraction of elements - B25D 2250/361: Use of screws or threaded connections - B25D: PERCUSSIVE TOOLS {(percussive machines for forging B21J; hand-held drilling machines, in general B23B45/00, for wood B27C3/08; drilling machines, used for mining or quarrying, with reciprocating tool which is turned intermittently when out of contact with the working face E21B1/00)} ## Abstract The present disclosure generally relates to quick change attachments for a pneumatic percussive tool. The attachments convert a pneumatic percussive tool, such as an air impact tool with proximal attachment means, which has a “pushing” force, into a pneumatic percussive tool having a “pulling” force. Once attached to the pneumatic percussive tool, the attachments also provide a quick change feature for allowing “pulling” tools to be simply and easily removed and replaced. ## Claims ### Claim 1 A pneumatic percussive tool comprising: a tool body having a hollow interior with a distal end and a proximal end; a piston slideable in the hollow interior between the distal end and the proximal; a first attachment coupler positioned on the distal end of the tool body for converting the tool to a pulling tool; an opening positioned at the distal end of the tool adjacent the first attachment coupler in communication with the hollow interior; a second attachment coupler positioned on the proximal end of the tool body configured to attach a pulling tool; and a removable end cap configured to selectively attach to the first attachment coupler and seal the opening and regulate air pressure within the internal cavity, the removable end cap configured to not protrude into the opening or into the hollow interior of the tool. ### Claim 2 (depends on 1) The pneumatic percussive tool of claim 1 wherein the removable cap is configured to threadingly engage the first attachment coupler. ### Claim 3 (depends on 1) The pneumatic percussive tool of claim 1 further comprising a quick change receiver attachment comprising a first end having a threaded rod configured to attach to the proximal end of the tool. ### Claim 4 (depends on 3) The pneumatic percussive tool of claim 3 wherein the quick change receiver attachment comprises a body having a T-shaped engagement slot. ### Claim 5 (depends on 4) The pneumatic percussive tool of claim 4 wherein the body of the quick change receiver attachment comprises a permanent magnet. ### Claim 6 (depends on 5) The pneumatic percussive tool of claim 5 wherein the permanent magnet is positioned opposite the T-shaped slot in an inner wall of the body. ### Claim 7 (depends on 5) The pneumatic percussive tool of claim 5 wherein the permanent magnet is positioned opposite the T-shaped slot in an inner wall of the body. ### Claim 8 (depends on 1) The pneumatic percussive tool of claim 1, wherein the end cap is made of a hardened material such as steel. ### Claim 9 (depends on 8) The pneumatic percussive tool of claim 8, wherein the piston strikes a first end of the tool body near the distal end. ### Claim 10 (depends on 8) The pneumatic percussive tool of claim 8, wherein the pull plug is made of a hardened material such as steel. ### Claim 11 (depends on 8) The pneumatic percussive tool of claim 8, wherein the pull plug comprises a head with a concave shaped perimeter for gripping during operation of the tool. ### Claim 12 (depends on 11) The pneumatic percussive tool of claim 11, wherein the pull plug comprises a first shaft that transitions from the head and comprises an upper end and a lower end and wherein the channel separates the upper end and lower end. ### Claim 13 (depends on 12) The pneumatic percussive tool of claim 12, wherein the pull plug further comprises a second shaft transitioning from the lower end of the shaft and the second shaft is narrower than the first shaft. ### Claim 14 (depends on 1) The pneumatic percussive tool of claim 1, wherein the cap comprises a pair of gripper walls. ### Claim 15 (depends on 1) The pneumatic percussive tool of claim 1, wherein the piston strikes a first end of the tool body near the distal end. ### Claim 16 (depends on 1) The pneumatic percussive tool of claim 1 further comprising a quick change receiver attachment comprising a first end having a threaded rod configured to attach to the proximal end of the tool. ### Claim 17 (depends on 16) The pneumatic percussive tool of claim 16 wherein the quick change receiver attachment further comprises a second end having a body comprising a T-shaped engagement slot. ### Claim 18 (depends on 17) The pneumatic percussive tool of claim 17 wherein the body of the quick change receiver attachment comprises a permanent magnet. ### Claim 19 A pneumatic percussive tool comprising: a tool body having a hollow interior with a distal end and a proximal end; a piston slideable in the hollow interior between the distal end and the proximal end; a first attachment coupler positioned on the distal end of the tool body for converting the tool to a pulling tool; an opening positioned at the distal end of the tool adjacent the first attachment coupler in communication with the hollow interior; a second attachment coupler positioned on the proximal end of the tool body configured to attach a pulling tool; a quick change chuck having a first end configured to selectively attach to the first attachment coupler and a second end comprising an axially slideable outer casing and a plurality of steel balls; and a pull plug configured to selectively attach to the second end of the quick change chuck to seal the opening and regulate the air pressure within the internal cavity; the pull plug comprising a first end configured to be inserted into the second end of the quick change chuck and having a channel for engagement with the plurality of steel balls; the first end of the pull plug protruding into the quick change chuck but not protruding into the opening or into the hollow interior of the tool.