# US 11,111,118 B2 · Vehicle jack device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,111,118 B2 - Document ID: US11111118B2 - Status: Granted - Kind: B2 - Application number: 16/344,082 - Filed: 2017-11-20 - Published: 2019-08-08 - Granted: 2021-09-07 - Earliest claimed: 2017-01-24 - Assignees: LG Chem, Ltd.; Tae Jung Technical Mfg Co., Ltd. - Applicants: LG Chem, Ltd.; Tae Jung Technical Mfg Co., Ltd. - Inventors: Dong Kyu Lim; Tai-Soo Shin; Sun Woo Kim; Se Jung Lee; Ji Eun Im; Ilhwan Sa; Woosuk Choi; Ho Seon Park; Ku Hee Anh - Web page: https://patentgrep.com/patent/US11111118B2 ## CPC - B66F 3/25: Constructional features - B66F 3/12: comprising toggle levers (lazy-tongs mechanisms B66F3/22) - B66F 3/22: Lazy-tongs mechanisms {(B66F11/042 takes precedence)} - B66F 2700/052: Support- or transmission members - B66F 2700/057: Pistons, e.g. telescopic; Cylinders or sealing joints; Hydraulic travel-limiting devices or shock damping - B66F: HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD ({invalid lifting devices A61G7/10; } mounting artificial islands on piles or like supports E02B17/00; scaffolding combined with lifting devices E04G1/22; lifting devices for sliding forms E04G11/24; lifting of buildings E04G23/06; shores or struts E04G25/00; lifts or other hoisting devices on ladders E06C7/12; props for mining E21D15/00) ## Abstract Disclosed is a vehicle jack device. The vehicle jack device according to an exemplary embodiment of the present invention includes: a base portion in which an inserting hole into which a hinge shaft is inserted is formed and which is supported on a bottom side; a pair of lower arms of which a first portion is installed in the hinge shaft of the base portion in a rotatable way and in which a reinforcing rib is formed in a lengthwise direction; a pair of upper arms respectively installed in a second portion of the lower arm, and on which a reinforcing rib is formed in a lengthwise direction; a bracket member for fixing a first portion of the upper arm in a rotatable way; and a driver installed between the lower arm and the upper arm and providing a tucking driving force to the lower arm and the upper arm. Herein, multiple reinforcing ribs are formed with different heights in a lengthwise direction of the lower arm and wherein the upper arm, the base portion, the lower arm, the upper arm, and the bracket member are made of a plastic material. ## Claims ### Claim 1 A vehicle jack device comprising: a base portion comprising an inserting hole into which a hinge shaft is inserted, and which is supported on a bottom side; a pair of lower arms, each comprising a first portion receiving the hinge shaft of the base portion therein in a rotatable way, and further comprising a lower arm reinforcing rib disposed in a lengthwise direction thereon; a pair of upper arms, each respectively installed in a second portion of the lower arms, and comprising a upper arm reinforcing rib is disposed in a lengthwise direction thereon; a bracket member for fixing a second portion of the upper arms in a rotatable way; and a driver installed between the lower arms and the upper arms configured to provide a tucking driving force to the lower arms and the upper arms, wherein multiple lower arm and upper arm reinforcing ribs are formed with different heights in a lengthwise direction of the lower arms and the upper arms, wherein the base portion, the lower arm, the upper arm, and the bracket member are made of a plastic material, wherein the first portion of the pair of lower arms comprises a lower inserting pipe formed on the first portion of the lower arms and extending across the lengthwise direction of the lower arms into which the hinge shaft is inserted in a rotatable way, and the second portion of the pair of lower arms comprises a lower inserting unit connected to the upper arm with the driver therebetween, and wherein a first portion of an edge of the lower inserting unit is opened in a semicircular form. ### Claim 2 (depends on 1) The vehicle jack device of claim 1, wherein the pair of lower arms comprise: a first lower arm including a first portion installed in the base portion by the lower inserting pipe in a rotatable way on the hinge shaft, a surface on which a first lower arm reinforcing rib is formed in a lengthwise direction, and a second portion in which the lower inserting unit is formed; and a second lower arm including a first portion installed in the base portion by the lower inserting pipe in a rotatable way on the hinge shaft, a surface on which a second lower arm reinforcing rib is formed in the lengthwise direction, and a second portion in which the lower inserting unit is formed. ### Claim 3 (depends on 2) The vehicle jack device of claim 2, wherein, a first region along the lengthwise direction of the first lower arm wherein the first lower arm reinforcing rib has a first height, and a second region along the lengthwise direction of the first lower arm wherein the first lower arm reinforcing rib has a second height that is different from the first height. ### Claim 4 (depends on 2) The vehicle jack device of claim 2, wherein, a first region along the lengthwise direction of the second lower arm wherein the second lower arm reinforcing rib has a first height, and a second region along the lengthwise direction of the second lower arm wherein the second lower arm reinforcing rib has a second height that is different from the first height. ### Claim 5 (depends on 1) The vehicle jack device of claim 1, wherein the first portion of the pair of lower arms comprises a stopper protrusion on a lateral side of the lower inserting pipe. ### Claim 6 (depends on 1) The vehicle jack device of claim 1, wherein, the first portion of the pair of upper arms comprises an upper inserting unit connected to the lower arm with the driver therebetween, and the second portion of the pair of upper arms comprises an upper inserting pipe into which a hinge pin is installed in the bracket member. ### Claim 7 (depends on 6) The vehicle jack device of claim 6, wherein the pair of upper arms comprise: a first upper arm including a first portion in which the upper inserting unit is formed, a surface on which a third upper arm reinforcing rib is formed in a lengthwise direction, and a second portion installed in the bracket member by the upper inserting pipe in a rotatable way; and a second upper arm including a first portion in which the upper inserting unit is formed, a surface on which a fourth upper arm reinforcing rib is formed in a lengthwise direction, and a second portion installed in the bracket member by the upper inserting pipe in a rotatable way. ### Claim 8 (depends on 7) The vehicle jack device of claim 7, wherein, the third upper arm reinforcing rib comprises a first region along the lengthwise direction of the first upper arm wherein the rib has a first height, and a second region along the lengthwise direction of first upper arm wherein the third upper arm reinforcing rib has a second height that is different than the first height. ### Claim 9 (depends on 7) The vehicle jack device of claim 7, wherein, a first region along the lengthwise direction of the second upper arm wherein the fourth upper arm reinforcing rib has a first height, and a second region along the lengthwise direction of the second upper arm wherein the fourth upper arm reinforcing rib has a second height that is different than the first height. ### Claim 10 (depends on 7) The vehicle jack device of claim 7, wherein a first portion of an edge of the upper inserting unit is opened in a semi-circular form. ### Claim 11 (depends on 6) The vehicle jack device of claim 6, wherein The second portion of the pair of upper arms comprises a stopper protrusion on a lateral side of the upper inserting pipe. ### Claim 12 (depends on 1) The vehicle jack device of claim 1, wherein the driver is a piston-cylinder device installed between the lower arms and the upper arms.