# US 12,759,115 B2 · Wrench with anti-penetration effect > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,759,115 B2 - Document ID: US12759115B2 - Status: Granted - Kind: B2 - Application number: 18/529,812 - Filed: 2023-12-05 - Published: 2024-06-13 - Granted: 2026-10-13 - Earliest claimed: 2022-12-12 - Applicants: Kung-Cheng Chen; Pei-Yang Lee - Inventors: Kung-Cheng Chen; Pei-Yang Lee - Web page: https://patentgrep.com/patent/US12759115B2 ## CPC - B25B 13/481: {for operating in areas having limited access} - B25B: TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING ## Abstract A wrench with anti-penetration effect has a body, at least one wrench head, and at least one abutting unit. The at least one wrench head is formed on an end of the body and has at least one engaging portion disposed on an inner side of the at least one wrench head. Each one of the at least one engaging portion has two engaging faces connected to each other with an inclined angle and disposed between a top surface and a bottom surface of the at least one wrench head. The at least one abutting unit is transversally formed on the top surface of the at least one wrench head by punching and extended out of the inner side of the at least one wrench head. ## Claims ### Claim 1 A wrench with anti-penetration effect comprising: a body being an elongated panel; at least one wrench head formed on an end of the body, and each one of the at least one wrench head having an inner side; a top surface; a bottom surface; at least two engaging portions disposed on the inner side of the at least one wrench head, and each one of the at least two engaging portions having two engaging faces connected to each other with an inclined angle and disposed between the top surface and the bottom surface of the at least one wrench head; and a curved portion formed in the inner side of the at least one wrench head between the at least two engaging portions of the at least one wrench head; and at least one abutting unit transversally and integrally formed on the top surface of the at least one wrench head by punching and extended out of the inner side of the at least one wrench head. ### Claim 2 (depends on 1) The wrench with anti-penetration effect as claimed in claim 1, wherein the at least one wrench head is open-ended and has two clamping jaws connected and arranged facing each other, each one of the two clamping jaws having an end portion, and the two end portions disposed apart from each other; and a mouth formed between the two end portions of the two clamping jaws; at least one of the at least two engaging portions is formed on an inner side of each one of the two clamping jaws; and the wrench has one said abutting unit disposed on the said engaging portion of each one of the two clamping jaws, aligning with the inclined angle of the said engaging portion, and transversally extended out of the two engaging faces of the said engaging portion. ### Claim 3 (depends on 2) The wrench with anti-penetration effect as claimed in claim 2, wherein each one of the two clamping jaws has one said engaging portion, and the two said engaging portions of the two clamping portions face to each other. ### Claim 4 (depends on 3) The wrench with anti-penetration effect as claimed in claim 3, wherein each one of the two clamping jaws has an abutting face disposed on the inner side of the clamping jaw adjacent to the end portion of the clamping jaw to abut one of sides of a fastener to prevent the fastener separating from the two clamping jaws via the mouth when the at least one wrench head is rotated. ### Claim 5 (depends on 4) The wrench with anti-penetration effect as claimed in claim 4, wherein the said abutting unit is formed on the top surface of the at least one wrench head at the inclined angle of a corresponding said engaging portion by a small punch head moved toward the at least one wrench head from the top surface to the bottom surface of the at least one wrench head to punch the top surface of the at least one wrench head deforming to form the said abutting unit. ### Claim 6 (depends on 4) The wrench with anti-penetration effect as claimed in claim 4, wherein the said abutting units are formed on the top surface of the at least one wrench head respectively at the inclined angles of two corresponding said engaging portions by a large punch head moved toward the at least one wrench head from the bottom surface to the top surface of the at least one wrench head to punch the top surface of the at least one wrench head deforming to form the said abutting units on the clamping jaws. ### Claim 7 (depends on 4) The wrench with anti-penetration effect as claimed in claim 4, wherein the wrench is a tubing wrench and has one said abutting unit disposed on each engaging portion. ### Claim 8 (depends on 7) The wrench with anti-penetration effect as claimed in claim 7, wherein the said abutting units are formed on the top surface of the at least one wrench head respectively at the said engaging portions by a large punch head moved toward the at least one wrench head from the top surface to the bottom surface of the at least one wrench head to punch the top surface of the at least one wrench head deforming to form the said abutting units on the top surface of the at least one wrench head. ### Claim 9 (depends on 3) The wrench with anti-penetration effect as claimed in claim 3, wherein the said abutting unit is formed on the top surface of the at least one wrench head at the inclined angle of a corresponding said engaging portion by a small punch head moved toward the at least one wrench head from the top surface to the bottom surface of the at least one wrench head to punch the top surface of the at least one wrench head deforming to form the said abutting unit. ### Claim 10 (depends on 3) The wrench with anti-penetration effect as claimed in claim 3, wherein the said abutting units are formed on the top surface of the at least one wrench head respectively at the inclined angles of two corresponding said engaging portions by a large punch head moved toward the at least one wrench head from the bottom surface to the top surface of the at least one wrench head to punch the top surface of the at least one wrench head deforming to form the said abutting units on the clamping jaws. ### Claim 11 (depends on 3) The wrench with anti-penetration effect as claimed in claim 3, wherein the wrench is a tubing wrench and has one said abutting unit disposed on each engaging portion. ### Claim 12 (depends on 11) The wrench with anti-penetration effect as claimed in claim 11, wherein the said abutting units are formed on the top surface of the at least one wrench head respectively at the said engaging portions by a large punch head moved toward the at least one wrench head from the top surface to the bottom surface of the at least one wrench head to punch the top surface of the at least one wrench head deforming to form the said abutting units on the top surface of the at least one wrench head. ### Claim 13 (depends on 2) The wrench with anti-penetration effect as claimed in claim 2, wherein the said abutting unit is formed on the top surface of the at least one wrench head at the inclined angle of a corresponding said engaging portion by a small punch head moved toward the at least one wrench head from the top surface to the bottom surface of the at least one wrench head to punch the top surface of the at least one wrench head deforming to form the said abutting unit. ### Claim 14 (depends on 2) The wrench with anti-penetration effect as claimed in claim 2, wherein the said abutting units are formed on the top surface of the at least one wrench head respectively at the inclined angles of two corresponding said engaging portions by a large punch head moved toward the at least one wrench head from the bottom surface to the top surface of the at least one wrench head to punch the top surface of the at least one wrench head deforming to form the said abutting units on the clamping jaws. ### Claim 15 (depends on 2) The wrench with anti-penetration effect as claimed in claim 2, wherein each one of the two clamping jaws has two said engaging portions formed on the inner side of the clamping head at a spaced interval, and the at least one wrench head has one said abutting unit formed on one of the two said engaging portions of each one of the two clamping jaws adjacent to the mouth. ### Claim 16 (depends on 15) The wrench with anti-penetration effect as claimed in claim 15, wherein the curved portion is formed between two of the said engaging portions of the two clamping jaws without forming the said abutting units. ### Claim 17 (depends on 2) The wrench with anti-penetration effect as claimed in claim 2, wherein each one of the two clamping jaws has three said engaging portions formed on the inner side of the clamping head at spaced intervals, and the at least one wrench head has two said abutting units formed on one of the three said engaging portions of each one of the two clamping jaws adjacent to the mouth and one of the three said engaging portions of each one of the two clamping jaws that is positioned away from the mouth. ### Claim 18 (depends on 17) The wrench with anti-penetration effect as claimed in claim 17, wherein the curved portion is formed between two of the said engaging portions of the two clamping jaws that are positioned away from the mouth. ### Claim 19 (depends on 2) The wrench with anti-penetration effect as claimed in claim 2, wherein the wrench is a tubing wrench and has one said abutting unit disposed on each engaging portion. ### Claim 20 (depends on 19) The wrench with anti-penetration effect as claimed in claim 19, wherein the said abutting units are formed on the top surface of the at least one wrench head respectively at the said engaging portions by a large punch head moved toward the at least one wrench head from the top surface to the bottom surface of the at least one wrench head to punch the top surface of the at least one wrench head deforming to form the said abutting units on the top surface of the at least one wrench head. ### Claim 21 (depends on 1) The wrench with anti-penetration effect as claimed in claim 1, wherein the wrench is formed by multiple stacking and riveting pieces, and an inner side of the uppermost piece has a shape different from those of the other pieces to form the at least one abutting unit on the at least one wrench head. ### Claim 22 (depends on 1) The wrench with anti-penetration effect as claimed in claim 1, wherein the at least one wrench head is open-ended and has two clamping jaws connected and arranged facing each other, each one of the two clamping jaws having an end portion, and the two end portions disposed apart from each other; and a mouth formed between the two end portions of the two clamping jaws; at least two of the said engaging portions are formed on an inner side of each one of the two clamping jaws; and the wrench has one said abutting unit disposed between the at least two of the said engaging portions of each one of the two clamping jaws. ### Claim 23 (depends on 22) The wrench with anti-penetration effect as claimed in claim 22, wherein the said abutting unit is formed on the top surface of the at least one wrench head between the at least two of the said engaging portions of each one of the two clamping jaws by a small punch head moved toward the at least one wrench head from the top surface to the bottom surface of the at least one wrench head to punch the top surface of the at least one wrench head deforming to form the said abutting unit. ### Claim 24 (depends on 1) The wrench with anti-penetration effect as claimed in claim 1, wherein the at least one wrench head has multiple said engaging portions formed on the inner side of the at least one wrench head at spaced intervals, and the said abutting unit is disposed on at least one of the multiple said engaging portions. ### Claim 25 (depends on 24) The wrench with anti-penetration effect as claimed in claim 24, wherein the said abutting unit is formed on the top surface of the at least one wrench head and aligns with the corresponding said engaging portion by a small punch head moved toward the at least one wrench head from the top surface to the bottom surface of the at least one wrench head to punch the top surface of the at least one wrench head deforming to form the said abutting unit. ### Claim 26 (depends on 25) The wrench with anti-penetration effect as claimed in claim 25, wherein the wrench has twelve said engaging portions formed on the inner side of the at least one wrench head at spaced intervals. ### Claim 27 (depends on 24) The wrench with anti-penetration effect as claimed in claim 24, wherein the said abutting unit is formed on the top surface of the at least one wrench head by a large punch head moved toward the at least one wrench head from the top surface to the bottom surface of the at least one wrench head to punch the top surface of the at least one wrench head deforming to form the said abutting unit. ### Claim 28 (depends on 27) The wrench with anti-penetration effect as claimed in claim 27, wherein the wrench has twelve said engaging portions formed on the inner side of the at least one wrench head at spaced intervals. ### Claim 29 (depends on 24) The wrench with anti-penetration effect as claimed in claim 24, wherein the said abutting unit is formed on the top surface of the at least one wrench head at the inclined angle of the corresponding said engaging portion by a large punch head moved toward the at least one wrench head from the bottom surface to the top surface of the at least one wrench head to punch the top surface of the at least one wrench head deforming to form the said abutting unit. ### Claim 30 (depends on 29) The wrench with anti-penetration effect as claimed in claim 29, wherein the wrench has twelve said engaging portions formed on the inner side of the at least one wrench head at spaced intervals. ### Claim 31 (depends on 24) The wrench with anti-penetration effect as claimed in claim 24, wherein the wrench has twelve said engaging portions formed on the inner side of the at least one wrench head at spaced intervals.