# US 12,006,050 B2 · Systems and methods for latch hook length adjustment > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,006,050 B2 - Document ID: US12006050B2 - Status: Granted - Kind: B2 - Application number: 17/220,571 - Filed: 2021-04-01 - Published: 2021-11-11 - Granted: 2024-06-11 - Earliest claimed: 2020-05-05 - Assignees: Rohr, Inc. - Applicants: Rohr, Inc. - Inventors: Jose Roberto Aguilar Ante; David Louis Lipson; Jaime Francisco Salazar Ibarra - Web page: https://patentgrep.com/patent/US12006050B2 ## CPC - B64D 29/06: Attaching of nacelles, fairings or cowlings - B64D 29/08: Inspection panels for power plants - E05B 63/06: with lengthwise-adjustable bolts {; with adjustable backset, i.e. distance from door edge} - E05C 19/145: {flush} - E05Y 2900/502: for aircraft or spacecraft - B64D: EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT - E05B: LOCKS; ACCESSORIES THEREFOR; HANDCUFFS - E05C: BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS (latching means for sideboard or tailgate structures for vehicles B62D, {B62D33/02}; fastening devices for constructional or engineering elements E04, F16B; locks, fastening devices structurally or operatively combined or having significant cooperation with locks E05B; means for operating or controlling wing fasteners in conjunction with mechanisms for moving the wing E05F) - E05Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF ## Abstract A latch hook length adjustment arrangement includes a latch hook body comprising a hook and a rod extending from the hook, an adjustment nut configured to threadingly couple to the rod, a plurality of detent pockets disposed in the first side surface of the adjustment nut, a bearing sleeve comprising one or more bearings, and a spring member configured to bias the adjustment nut against the bearing sleeve. The detent pockets and bearing(s) may retain the nut in a rotational position, thereby maintaining the positional length of the hook. ## Claims ### Claim 1 A latch hook length adjustment arrangement comprising: a latch hook frame comprising a first wall and a second wall; a first rod aperture disposed in the first wall of the latch hook frame; a second rod aperture disposed in the second wall of the latch hook frame; a latch hook body comprising a hook and a rod extending from the hook, wherein the first rod aperture is configured to receive the rod and the second rod aperture is configured to receive the rod; an adjustment nut comprising a first side surface, a second side surface disposed opposite the adjustment nut from the first side surface, and a radially outer surface, wherein the adjustment nut is threadingly coupled to the rod; a plurality of detent pockets disposed in the first side surface of the adjustment nut; a bearing sleeve comprising a hollow sleeve portion surrounding the rod, a flange extending radially outward from the hollow sleeve portion, and a bearing disposed at least partially in the flange, the first rod aperture configured to receive at least a portion of the hollow sleeve portion; a spring member configured to bias the adjustment nut against the bearing sleeve, the spring member is disposed opposite the adjustment nut from the bearing sleeve, and the spring member is disposed between the second wall and the adjustment nut; wherein, in response to rotation of the adjustment nut in a first rotational direction with respect to the rod, the rod is configured to extend from the first rod aperture, and in response to rotation of the adjustment nut in a second rotational direction with respect to the rod, the rod is configured to retract into the first rod aperture. ### Claim 2 (depends on 1) The latch hook length adjustment arrangement of claim 1, further comprising an access aperture disposed in the latch hook frame, wherein the adjustment nut is accessible via the access aperture. ### Claim 3 (depends on 1) The latch hook length adjustment arrangement of claim 1, wherein the first rod aperture is aligned with the second rod aperture. ### Claim 4 (depends on 1) The latch hook length adjustment arrangement of claim 1, further comprising a plurality of adjustment pockets disposed in the radially outer surface of the adjustment nut. ### Claim 5 (depends on 1) The latch hook length adjustment arrangement of claim 1, wherein an inner diameter of the adjustment nut is less than an inner diameter of the bearing sleeve. ### Claim 6 A latch hook length adjustment arrangement comprising: a latch hook frame; a first rod aperture disposed in the latch hook frame; a latch hook body comprising a hook and a rod extending from the hook, wherein the first rod aperture is configured to receive the rod; an adjustment nut configured to receive the rod, wherein the adjustment nut comprises a plurality of detent pockets disposed in a first side surface of the adjustment nut; a bearing sleeve configured to engage the adjustment nut, the bearing sleeve comprises a hollow sleeve portion surrounding the rod, a flange extending outward from the hollow sleeve portion, and a bearing coupled to the flange, the plurality of detent pockets are configured to receive the bearing to secure the adjustment nut at a rotational position with respect to the rod, and the first rod aperture is configured to receive at least a portion of the hollow sleeve portion; and a spring member configured to bias the adjustment nut against the bearing sleeve, wherein, in response to rotation of the adjustment nut in a first rotational direction with respect to the rod, the rod is configured to extend from the first rod aperture, and in response to rotation of the adjustment nut in a second rotational direction with respect to the rod, the rod is configured to retract into the first rod aperture. ### Claim 7 (depends on 6) The latch hook length adjustment arrangement of claim 6, wherein the bearing sleeve is configured to receive the rod. ### Claim 8 (depends on 6) The latch hook length adjustment arrangement of claim 6, wherein the spring member is configured to receive the rod. ### Claim 9 (depends on 6) The latch hook length adjustment arrangement of claim 6, further comprising a plurality of adjustment pockets disposed in a radially outer surface of the adjustment nut. ### Claim 10 (depends on 9) The latch hook length adjustment arrangement of claim 9, wherein the plurality of adjustment pockets are configured to receive a tool for rotating the adjustment nut. ### Claim 11 (depends on 6) The latch hook length adjustment arrangement of claim 6, wherein the adjustment nut comprises a second side surface disposed opposite the adjustment nut from the first side surface, and the second side surface is substantially smooth. ### Claim 12 (depends on 11) The latch hook length adjustment arrangement of claim 11, wherein the spring member engages the second side surface. ### Claim 13 (depends on 6) The latch hook length adjustment arrangement of claim 6, wherein the spring member comprises a wave spring. ### Claim 14 (depends on 6) The latch hook length adjustment arrangement of claim 6, wherein each detent pocket of the plurality of detent pockets is disposed at an equal distance from an axis of rotation of the adjustment nut. ### Claim 15 (depends on 6) The latch hook length adjustment arrangement of claim 6, further comprising a second rod aperture disposed in the latch hook frame, wherein the second rod aperture is aligned with the first rod aperture, and the second rod aperture is configured to receive the rod, wherein the adjustment nut, the bearing sleeve, and the spring member are disposed between the first rod aperture and the second rod aperture. ### Claim 16 A latch hook length adjustment arrangement, comprising: a latch hook body comprising a hook and a rod extending from the hook, the rod comprising a centerline axis; an adjustment nut comprising a first side surface, a second side surface disposed opposite the adjustment nut from the first side surface, and a radially outer surface, wherein the adjustment nut is configured to threadingly couple to the rod; a plurality of detent pockets disposed in the first side surface of the adjustment nut; a bearing sleeve comprising a flange and a hollow sleeve portion, the hollow sleeve portion surrounding the rod, protruding axially from the flange, and comprising a cylindrical geometry, the flange extending radially outward from the hollow sleeve portion; a bearing disposed at least partially in the flange; and a spring member configured to bias the adjustment nut against the bearing sleeve. ### Claim 17 (depends on 16) The latch hook length adjustment arrangement of claim 16, wherein, in response to rotation of the adjustment nut in a first rotational direction with respect to the rod, the rod is configured to move axially with respect to the adjustment nut in a first linear direction. ### Claim 18 (depends on 17) The latch hook length adjustment arrangement of claim 17, wherein, in response to rotation of the adjustment nut in a second rotational direction with respect to the rod, the rod is configured to move axially with respect to the adjustment nut in a second linear direction. ### Claim 19 (depends on 16) The latch hook length adjustment arrangement of claim 16, wherein the second side surface of the adjustment nut is substantially smooth. ### Claim 20 (depends on 16) The latch hook length adjustment arrangement of claim 16, wherein each detent pocket of the plurality of detent pockets is sized corresponding to a geometry of the bearing.