# US 8,782,863 B2 · Press tool for connecting in particular tubular workpieces > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,782,863 B2 - Document ID: US8782863B2 - Status: Granted - Kind: B2 - Application number: 13/383,349 - Filed: 2010-07-02 - Published: 2013-01-31 - Granted: 2014-07-22 - Earliest claimed: 2009-07-15 - Assignees: Novopress GmbH Pressen und Presswerkzeuge & Co. KG - Applicants: Heinrich Pfeiffer - Inventors: Heinrich Pfeiffer - Web page: https://patentgrep.com/patent/US8782863B2 ## CPC - B21D 39/048: {using presses for radially crimping tubular elements} - B25B 27/10: inserting fittings into hoses - Y10T 29/5367: Coupling to conduit - Y10T 29/53917: Tube with tube - Y10T 29/53987: Tube, sleeve or ferrule - Y10T 29/53996: by deforming - 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 - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A press tool, such as a press sling for pressing in particular tubular workpieces, comprises a plurality of articulated press elements connected to one another in the form of a chain. The press tool is open between two end press elements for forming a closing site between two end press elements. In order to unlatch the press tool from a closed position in which the closing site is substantially closed, a handling element is provided according to the disclosure. Said tool alternatively also serves for releasing a press jaw mounted on a press jaw carrier. ## Claims ### Claim 1 A press tool for connecting tubular workpieces, comprising: a plurality of articulated press elements connected to one another in the form of a chain, said press tool being open for forming a closing site between two end press elements, at least one of the two end press elements comprising a press jaw carrier with a press jaw arranged for displacement thereon, and a handling element for unlatching the press tool from a closed position in which the closing site is substantially closed, and/or for releasing at least one end press element, the handling element displaces the press jaw and thus releases the same from the closed position. ### Claim 2 (depends on 1) The press tool according to claim 1, wherein the handling element comprises at least one lever element which is pivotally connected to a displaceable press jaw or to the corresponding press jaw carrier and, via an abutment, is connected to the press jaw carrier and to the displaceable press jaw, respectively. ### Claim 3 (depends on 1) The press tool according to claim 1, wherein one lever element is provided for each end press element. ### Claim 4 (depends on 2) The press tool according to claim 2, wherein the abutment comprises a pin guided in a longitudinal hole. ### Claim 5 (depends on 4) The press tool according to claim 4, wherein said pin is arranged on the press jaw carrier or on the lever element, and that the longitudinal hole is arranged in the lever element or on the press jaw carrier. ### Claim 6 (depends on 1) The press tool according to claim 1, wherein, by actuation of the handling element the press jaw is displaced. ### Claim 7 (depends on 1) The press tool according to claim 1, wherein one of the press jaws of the two end press elements cooperates with a guide element, said guide element comprising a recess into which said press jaw extends in the closed position. ### Claim 8 (depends on 7) The press tool according to claim 7, wherein, by pivoting the lever element, the press jaw is displaced relative to the recess. ### Claim 9 (depends on 8) The press tool according to claim 8, wherein at least one of the press jaws of the two end press elements cooperates with a guide element in such a manner that, during the pressing process, the two press jaws of the two end press elements are first moved toward each other in a first pressing stage. ### Claim 10 (depends on 9) The press tool according to claim 9, wherein the guide elements comprise a guide surface having an abutment element abutting thereon, said guide surface being inclined in the direction of a gap formed between the two press jaws of the two end press elements. ### Claim 11 (depends on 10) The press tool according to claim 10, wherein the guide surface is formed by the press element adjacent to the end press element. ### Claim 12 (depends on 10) The press tool according to claim 10, wherein the abutment element is formed on the press jaw of the end press element. ### Claim 13 (depends on 7) The press tool according to claim 7, wherein the recess is provided on an adjacent press element. ### Claim 14 (depends on 10) The press tool according to claim 10, wherein the end press element is articulated to an adjacent press element in such a manner that, when the end press element is being pivoted in the closing direction, the abutment element slides on the guide surface. ### Claim 15 A press tool for connecting tubular workpieces, comprising: a plurality of articulated press elements connected to one another in the form of a chain, said press tool being open for forming a closing site between two end press elements, and a handling element for unlatching the press tool from a closed position in which the closing site is substantially closed, and/or for releasing at least one end press element, the handling element comprising at least one lever element which is pivotally connected to a displaceable press jaw and, via an abutment, is connected to a press jaw carrier and to the displaceable press jaw, respectively, wherein the abutment comprises a pin guided in a longitudinal hole. ### Claim 16 (depends on 15) The press tool according to claim 15, wherein said pin is arranged on the press jaw carrier or on the lever element, and that the longitudinal hole is arranged in the lever element or on the press jaw carrier. ### Claim 17 A press tool for connecting tubular workpieces, comprising: a plurality of articulated press elements connected to one another in the form of a chain, said press tool being open for forming a closing site between two end press elements, and a handling element for unlatching the press tool from a closed position in which the closing site is substantially closed, and/or for releasing at least one end press element, wherein the end press element is articulated to an adjacent press element in such a manner that, when the end press element is being pivoted in a closing direction, an abutment element slides on a guide surface.