# US 10,865,589 B2 · Motor vehicle door latch > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,865,589 B2 - Document ID: US10865589B2 - Status: Granted - Kind: B2 - Application number: 15/846,677 - Filed: 2017-12-19 - Published: 2018-06-21 - Granted: 2020-12-15 - Earliest claimed: 2016-12-19 - Assignees: Kiekert AG - Applicants: Kiekert AG - Inventors: Robert S. Pettengill; Robert J. Hunt - Web page: https://patentgrep.com/patent/US10865589B2 ## CPC - E05B 81/15: {with means preventing the detent to return to its latching position before the bolt has moved to the unlatched position} - E05B 81/14: operating on bolt detents, e.g. for unlatching the bolt - Y10T 292/1047: Closure - Y10T 292/1082: Motor - E05B: LOCKS; ACCESSORIES THEREFOR; HANDCUFFS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A motor vehicle door latch is equipped with a locking mechanism including a catch and a pawl, a release element for the locking mechanism, and a memory element that effects an unimpeded opening movement of the catch from a closed to an open position and maintains the release element in an ineffective position in respect of the locking mechanism during the opening movement of the catch. The memory element includes at least two components with a control lever and a blocking lever interacting with the release element located thereon. ## Claims ### Claim 1 A motor vehicle door latch comprising: a frame box; a locking mechanism including a catch, pivotally mounted to the frame box about a catch axis, and a pawl pivotally mounted to the frame box about a pawl axis; a release element operatively connected to the pawl for operating the pawl between a retaining position, retaining the catch, and a release position, releasing the catch; and a memory element that effects an unimpeded opening movement of the catch from a closed to an open position and maintains the release element in an ineffective position relative to the locking mechanism during the opening movement of the catch, the memory element including a control lever, coaxially mounted to the catch axis, and a blocking lever mounted to the control lever and interacting with the release element, wherein, when the control lever is operated, the control lever is configured to move the blocking lever toward engagement with the release element, the engagement allowing the blocking lever to pivot and move the release element toward moving the pawl into the release position, and also maintaining the release element in the ineffective position. ### Claim 2 (depends on 1) The motor vehicle door latch according to claim 1, wherein the control lever is moved mechanically. ### Claim 3 (depends on 1) The motor vehicle door latch according to claim 1, wherein the control lever is pre-tensioned with a spring in a direction of a neutral position, and is impinged against a force of the spring for interaction with the release element. ### Claim 4 (depends on 1) The motor vehicle door latch according to claim 1, wherein the blocking lever is an angular lever with a blocking arm and a control arm. ### Claim 5 (depends on 4) The motor vehicle door latch according to claim 4, wherein the blocking arm interacts with a contour on the catch. ### Claim 6 (depends on 4) The motor vehicle door latch according to claim 4, wherein the blocking arm of the blocking lever and the release element are equipped with corresponding contact surfaces, which, with mutual contact, lead to a pivoting movement of the blocking lever. ### Claim 7 (depends on 1) The motor vehicle door latch according to claim 1, wherein a contour on the catch lifts the blocking lever from a stop fixed to a housing as soon as when the locking mechanism is opened to beyond a ratchet position. ### Claim 8 (depends on 1) The motor vehicle door latch according to claim 1, wherein the control lever is moved in a motorized manner by an electromotor. ### Claim 9 A motor vehicle door latch comprising: a locking mechanism including a pivotally mounted catch and a pivotally mounted pawl; a release element operatively connected to the pawl for operating the pawl between a retaining position, retaining the catch, and a release position, releasing the catch; and a memory element that effects an unimpeded opening movement of the catch from a closed to an open position and maintains the release element in an ineffective position relative to the locking mechanism during the opening movement of the catch, the memory element including a control lever and a blocking lever mounted to the control lever and interacting with the release element, wherein, when the control lever is operated, the control lever is configured to move the blocking lever toward engagement with the release element, the engagement allowing the blocking lever to pivot and move the release element toward moving the pawl into the release position, and also maintaining the release element in the ineffective position, and wherein the control lever is pre-tensioned with a spring in a direction of a neutral position of the control lever, and is impinged against a force of the spring for interaction with the release element. ### Claim 10 (depends on 9) The motor vehicle door latch according to claim 9, wherein the control lever is moved mechanically. ### Claim 11 (depends on 9) The motor vehicle door latch according to claim 9, wherein the blocking lever is an angular lever with a blocking arm and a control arm. ### Claim 12 (depends on 11) The motor vehicle door latch according to claim 11, wherein the blocking arm interacts with a contour on the catch. ### Claim 13 (depends on 11) The motor vehicle door latch according to claim 11, wherein the blocking arm of the blocking lever and the release element are equipped with corresponding contact surfaces, which, with mutual contact, lead to a pivoting movement of the blocking lever. ### Claim 14 (depends on 9) The motor vehicle door latch according to claim 9, wherein a contour on the catch lifts the blocking lever from a stop fixed to a housing when the locking mechanism is opened to beyond a ratchet position. ### Claim 15 (depends on 9) The motor vehicle door latch according to claim 9, wherein the control lever is moved in a motorized manner by an electromotor. ### Claim 16 A motor vehicle door latch comprising: a locking mechanism including a pivotally mounted catch and a pivotally mounted pawl; a release element operatively connected to the pawl for operating the pawl between a retaining position, retaining the catch, and a release position, releasing the catch; a memory element that effects an unimpeded opening movement of the catch from a closed to an open position and maintains the release element in an ineffective position relative to the locking mechanism during the opening movement of the catch, the memory element including a control lever and a blocking lever mounted to the control lever and interacting with the release element; and a housing having a stop fixed to the housing, wherein, when the control lever is operated, the control lever is configured to move the blocking lever toward engagement with the release element, the engagement allowing the blocking lever to pivot and move the release element toward moving the pawl into the release position, and also maintaining the release element in the ineffective position, and wherein a contour on the catch lifts the blocking lever from the stop when the locking mechanism is opened to beyond a ratchet position. ### Claim 17 (depends on 16) The motor vehicle door latch according to claim 16, wherein the control lever is moved mechanically or in a motorized manner by an electromotor. ### Claim 18 (depends on 16) The motor vehicle door latch according to claim 16, wherein the blocking lever is an angular lever with a blocking arm and a control arm.