# US 5,704,730 A · Vehicle arresting post > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,704,730 A - Document ID: US5704730A - Status: Granted - Kind: A - Application number: 08/656,479 - Filed: 1996-05-31 - Granted: 1998-01-06 - Earliest claimed: 1994-05-20 - Inventors: Roderick Lloyd Burton-Chambers - Web page: https://patentgrep.com/patent/US5704730A ## CPC - E01F 13/123: {depressible or retractable below the traffic surface, e.g. one-way spike barriers, power-controlled prong barriers} - E01F: ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE ## Abstract When a post 10 is hit by a car in the direction indicated by arrow 42 the post moves a restricted amount in the direction of that arrow and that movement causes a support member 34 to be lifted up to raise the front wheels of the car off the ground. A plate 58 is secured to the underside of the support member 34 and, during raising of the support member 34, the plate passes over a series of notches 56. However, the plate 58 abuts those notches 56 to prevent the support member 34 moving downwardly again. ## Claims ### Claim 1 A post arrangement including a post, a lifting portion, a link and latching means, said post being arranged to extend upwardly in an operative position; said lifting portion being arranged to be raised at a location spaced from said post in a first direction; said link connecting said post to said lifting portion by said link being pivotally connected to one of the post and lifting portion and slidably connected to the other of said post and lifting portion with said sliding movement of said link being restricted in at least one direction whereby, when said post is in the operative position and is subject to a significant impact from said first direction, said link connecting said post to said lifting portion causes said lifting portion to be raised with said latching means preventing the return of the raised lifting portion; said post, lifting portion and link being movable to a position in which the post assembly is substantially flush with the ground when the assembly is mounted in the ground. ### Claim 2 (depends on 1) An arrangement according to claim 1 in which the lifting portion is arranged, in use, to lift a vehicle that has subjected the post to a significant impact from the first direction. ### Claim 3 (depends on 1) An arrangement according to claim 1 including a pivot, said post being pivotally movable around said pivot between the position in which the post assembly is substantially flush with the ground and the operative position. ### Claim 4 (depends on 1) An arrangement according to claim 1 including a pivot, said lifting portion being pivotally movable about said pivot when being raised. ### Claim 5 (depends on 4) An arrangement according to claim 4 in which the post and the lifting portion are pivotally movable about a common axis. ### Claim 6 (depends on 1) An arrangement according to claim 1 in which the post is arranged to abut the lifting portion when movement of the post causes raising of the lifting portion. ### Claim 7 (depends on 6) An arrangement according to claim 6 in which the abutment of the post with the lifting portion is arranged to cause or assist in the raising of the lifting portion. ### Claim 8 (depends on 1) An arrangement according to claim 1 in which movement of the post when the post is subject to a significant impact is restricted. ### Claim 9 (depends on 1) A post as claimed according to claim 1 including locking means which is adapted to secure or lock the post in the operative position. ### Claim 10 (depends on 1) An arrangement according to claim 1 in which the lifting portion requires a force greater than a predetermined amount to be raised. ### Claim 11 (depends on 10) An arrangement according to claim 10 in which the lifting portion includes an abutment and a stop, said abutment being constrained to move with the lifting portion that has to pass said stop that is restrained from moving with the lifting portion. ### Claim 12 (depends on 11) An arrangement according to claim 11 in which the abutment is detachably mounted on the lifting portion. ### Claim 13 (depends on 1) An arrangement according to claim 1 in which the latching means comprise a lever and an abutment, said lever being pivotally connected to the lifting portion and being arranged to pass over said abutment when the lifting portion is being raised with said lever being arranged to cooperate with that abutment to prevent return of the lifting portion from the raised position. ### Claim 14 (depends on 1) An arrangement according to claim 1 in which the post, the lifting portion and the latching means are arranged to overlap each other in a horizontal direction when in a storage position. ### Claim 15 (depends on 1) An arrangement according to claim 1 in which the post and the lifting portion are arranged to overlap each other in a horizontal direction when in a storage position. ### Claim 16 (depends on 1) A post lay out including a pair of post arrangements each according to claim 1 with each of the posts being associated with a different lifting portion whereby when the posts are in the operative position, then one of the posts is subject to a significant impact from the first direction the lifting portion associated with that post is raised and when the other post is subject to a significant impact form an opposed direction the lifting portion associated with that other post is caused to be raised.