# US 12,759,113 B2 · Device for displacing a push/pull rod in steps > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,759,113 B2 - Document ID: US12759113B2 - Status: Granted - Kind: B2 - Application number: 18/835,438 - Filed: 2023-03-01 - Published: 2025-05-22 - Granted: 2026-10-13 - Earliest claimed: 2022-03-03 - Assignees: Wolfcraft GmbH - Applicants: wolfcraft GmbH - Inventors: Zbigniew Noniewicz; Hans-Jürgen Schüller - Web page: https://patentgrep.com/patent/US12759113B2 ## CPC - B25B 5/085: {with at least one jaw sliding along a bar} - B25B 5/02: with sliding jaws - B25B 5/068: {with at least one jaw sliding along a bar (B25B5/061, B25B5/085, B25B5/102, B25B5/127 take precedence)} - B25B: TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING ## Abstract A device for displacing a push/pull rod in steps includes a housing and a drive lever that is supported by the housing and displaces a drive element, which engages on the push/pull rod, forward in a clamping direction relative to the housing during an advancing actuation. A blocking element is supported by the housing and prevents a reverse displacement of the push/pull rod in a release direction opposite the clamping direction in a blocking position and which can be displaced from the blocking position into a release position by actuating a release lever that engages on the blocking element. A movement limiting element is struck by the blocking element during a forward displacement of the drive element, the forward displacement carrying the push/pull rod. The movement limiting element is acted upon by a spring element against the blocking element and is arranged in a pocket of the release lever. ## Claims ### Claim 1 A device for displacing a pull/push rod (1) in steps, comprising: a housing (2), a drive lever (3), which is supported by the housing (2) and which displaces a drive element (4), which is configured to engage with the pull/push rod (1), forward in a clamping direction(S) relative to the housing (2) during an advancing actuation, a blocking element (5), which is supported by the housing (2) and which is configured to prevent a reverse displacement of the pull/push rod (1) in a release direction (L) directed opposite the clamping direction(S) in a blocking position and which is displaceable from the blocking position into a release position, in which a displacement of the pull/push rod (1) in the release direction (L) is possible, by actuating a release lever (6), which engages with the blocking element (5), and a movement limiting element (7) acting upon the blocking element (5), the movement limiting element (7) preventing the blocking element (5) from being displaced during the forward displacement of the drive element (4) entraining the pull/push rod (1), wherein the movement limiting element (7) is acted upon by a spring element (9) against the blocking element (5). ### Claim 2 (depends on 1) The device according to claim 1, wherein the blocking element (5) supports itself on a housing-fixed stop (8) in the blocking position in the release direction (L) and the spring element (9) acts upon the blocking element (5) in the release direction (L). ### Claim 3 (depends on 1) The device according to claim 1, wherein the movement limiting element (7) is carried by the release lever (6) and the spring element (9) is arranged between the release lever (6) and the movement limiting element (7). ### Claim 4 (depends on 1) The device according claim 1, wherein the release lever (6) is pivotably supported in the housing (2) about a pivot axis (10) and the movement limiting element (7) is pivotably supported about the pivot axis (10). ### Claim 5 (depends on 1) The device according to claim 1, wherein the movement limiting element (7) is arranged in a pocket (11) of the release lever (6), wherein the pocket (11) is open on a side facing away from an actuating flank (14) of the release lever (6). ### Claim 6 (depends on 5) The device according to claim 5, wherein the release lever (6) has a grip section (12), which protrudes from the housing (2) and in which a first arm (13) of the movement limiting element (7) is located, wherein the spring element (9) acts on the movement limiting element (7) in such a way that the first arm (13) is acted upon in a direction of the actuating flank (14) of the release lever (6). ### Claim 7 (depends on 6) The device according to claim 6, wherein a second arm of the movement limiting element (7), which is located in the interior of the housing (2), has a cam (15), which acts upon the blocking element (5). ### Claim 8 (depends on 5) The device according to claim 5, wherein the first arm (13) of the movement limiting element (7) partly protrudes from the pocket (11). ### Claim 9 (depends on 1) The device according to claim 1, wherein the release lever (6) is supported with a non-circular bearing eye (16), which allows for a movement play, on a bearing pin forming the pivot axis (10), and the movement limiting element (7) is supported on the bearing pin with a round bearing eye (17), which -does not allow for a movement play.