# US 8,784,082 B2 · Locking device for packing assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,784,082 B2 - Document ID: US8784082B2 - Status: Granted - Kind: B2 - Application number: 13/095,332 - Filed: 2011-04-27 - Published: 2011-12-01 - Granted: 2014-07-22 - Earliest claimed: 2010-05-27 - Assignees: Schlunberger Technology Corporation - Applicants: Edward Leugemors; Joe Hubenschmidt - Inventors: Edward Leugemors; Joe Hubenschmidt - Web page: https://patentgrep.com/patent/US8784082B2 ## CPC - F16B 39/10: by a plate, {spring, wire} or ring immovable with regard to the bolt or object {and mainly perpendicular to the axis of the bolt}(F16B39/08 takes precedence) - F16B 2200/69: Redundant disconnection blocking means - Y10T 29/49826: Assembling or joining - Y10T 70/5624: Externally mounted locking device - F16B: DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING (couplings for transmitting rotation F16D) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The current application discloses a locking device for a packing assembly. The device comprises a holding end and a locking end, wherein the holding end is configured to mechanically and/or frictionally engage a fixed component of a packing assembly and the locking end is configured to mechanically and/or frictionally engage at least a portion of the packing nut so as to prevent the packing nut from rotating or otherwise changing its position. ## Claims ### Claim 1 A locking device for a packing assembly, the device comprising: a holding end and a locking end, wherein the holding end is configured to mechanically and/or frictionally engage a fixed component of a packing assembly and the locking end is configured to mechanically and/or frictionally engage at least a portion of a packing nut so as to prevent the packing nut from rotating or otherwise changing its position, wherein the holding end comprises a hook shape that defines an inner space and a tip opening, wherein the inner space has a diameter that is larger than a clearance of the tip opening and is configured to achieve a snug fit with the fixed component, and wherein the tip opening narrows inwardly from both a first side and a second side of the inner space at the clearance, the tip opening being configured to prevent the locking device from being detached from the fixed component via the tip opening. ### Claim 2 (depends on 1) The locking device of claim 1, wherein the locking end is in the shape of a latch. ### Claim 3 (depends on 2) The locking device of claim 2, wherein the locking end comprises a lower side adjacent to the latch, and wherein a profile of the latch and the lower side is substantially complementary to a profile of a corresponding structure of the packing nut. ### Claim 4 (depends on 1) The locking device of claim 1, further comprising a spacer attached to the locking device so as to set the locking device at a distance from a plate upon which the packing nut is attached. ### Claim 5 (depends on 4) The locking device of claim 4, wherein the spacer comprises a magnetic material. ### Claim 6 (depends on 4) The locking device of claim 4, wherein the spacer is positioned between the holding end and the locking end and is positioned away from the inner space of the holding end. ### Claim 7 An assembly comprising: a packing nut; a rod; and a locking device that connects the packing nut and the rod via a mechanical and/or frictional force, wherein the locking device comprises a holding end and a locking end, and the holding end is configured to mechanically and/or frictionally engage the rod and the locking end is configured to mechanically and/or frictionally engage at least a portion of the packing nut so as to prevent the packing nut from rotating or otherwise changing its position. ### Claim 8 (depends on 7) The assembly of claim 7, wherein the rod comprises a portion having a substantially different diameter from that of an adjacent portion of the rod. ### Claim 9 (depends on 8) The assembly of claim 8, wherein the rod comprises a stepped ring having a diameter larger than that of an adjacent portion of the rod. ### Claim 10 (depends on 7) The assembly of claim 7, wherein the holding end is in the shape of a hook. ### Claim 11 (depends on 10) The locking device of claim 10, wherein the locking end is in the shape of a latch. ### Claim 12 (depends on 11) The locking device of claim 11, wherein the hook-shaped holding end has an inner space and a tip opening, and the inner space has a diameter that is larger than a clearance of the tip opening. ### Claim 13 (depends on 12) The assembly of claim 12, wherein the inner space has a profile that is substantially complementary to that of a stepping ring and the clearance of the tip opening is substantially the same or slightly larger than a portion of the rod that is adjacent to the stepping ring. ### Claim 14 (depends on 7) The assembly of claim 7, wherein the locking end has a lower side adjacent to the latch, and wherein a profile of the latch and the lower side is substantially complementary to a profile of a corresponding structure of the packing nut. ### Claim 15 (depends on 7) The assembly of claim 7, further comprising a spacer attached to the locking device so as to set the locking device at a distance from a plate upon which the packing nut is attached. ### Claim 16 (depends on 15) The assembly of claim 15, wherein the spacer comprises a magnetic material. ### Claim 17 (depends on 16) The assembly of claim 16, wherein the spacer comprises a disc. ### Claim 18 A locking device for a packing assembly, the device comprising: a holding end configured to mechanically and/or frictionally engage a fixed component of a packing assembly; a locking end configured to mechanically and/or frictionally engage at least a portion of a packing nut so as to prevent the packing nut from rotating or otherwise changing its position; and a magnetic material that is configured to adhere the locking device to the packing assembly via a magnetic force. ### Claim 19 (depends on 18) The locking device of claim 18, further comprising: a body that defines the holding end and the locking end; and a spacer that is configured to position the body at a desired distance from a portion of the packing assembly, wherein the spacer comprises the magnetic material. ### Claim 20 (depends on 18) The locking device of claim 18, wherein the magnetic material comprises a magnetic disc.