# US 10,767,323 B2 · Lifting of concrete components > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,767,323 B2 - Document ID: US10767323B2 - Status: Granted - Kind: B2 - Application number: 15/502,357 - Filed: 2015-08-06 - Published: 2017-08-10 - Granted: 2020-09-08 - Earliest claimed: 2014-08-29 - Assignees: Illinois Tool Works Inc. - Applicants: Illinois Tool Works Inc. - Inventors: Robert Urquhart Connell; Andrew Saul Barraclough; Alexander Charles Knott - Web page: https://patentgrep.com/patent/US10767323B2 ## CPC - E04B 1/35: Extraordinary methods of construction, e.g. lift-slab, jack-block (E04B1/34 takes precedence; falsework, shuttering for shaping walls, floors, ceilings or roofs in situ E04G11/04; conveying or assembling of building materials E04G21/00; working measures on existing buildings E04G23/00) - E04G 21/14: Conveying or assembling building elements (roofing E04D; finishing work E04F) - B66C 1/666: {for connection to anchor inserts embedded in concrete structures} - E01C 11/005: {Methods or materials for repairing pavings (E01C7/35 takes precedence; for concrete coverings E01C7/147; for bituminous coverings E01C7/187; devices for repair works E01C23/06; repairing bridge floorings E01D22/00)} - E01C 23/10: for raising or levelling sunken paving; for filling voids under paving; for introducing material into substructure (consolidating soil in general E02D3/12) - E04G 21/142: {Means in or on the elements for connecting same to handling apparatus (E04B1/38 takes precedence)} - E04B 2001/3588: {using special lifting or handling devices, e.g. gantries, overhead conveying rails} - E04B: GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS (border constructions of opening in walls, floors or ceilings E06B1/00; {electromagnetic shielding H05K9/0001}) - E04G: SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS - B66C: CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES ({specially adapted for lifting invalids A61G7/10;} rope, cable, or chain winding mechanisms, braking or detent devices therefor B66D; specially adapted for nuclear reactors G21) - E01C: CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR (forming roads or like surfaces by compacting or grading snow or ice E01H) ## Abstract A lifting system for a concrete component comprises a void former incorporated into the component during casting and which provides within the component a void which receives a locking pin of a lifting anchor assembly which is locked within the void by rotation of a locking pin. The lifting anchor assembly has a visual indicator to indicate when the pin is in its locked condition within the void, and a pivotal lifting shackle of the assembly is prevented from movement into a position in which lifting can take place until the pin is in its locked condition. Preferably a base of the void former is configured to retain components of a jacking system by which a concrete slab used for road repair can be jacked into a level configuration with the remainder of the roadway when it has been positioned by use of the lifting system. ## Claims ### Claim 1 A lifting system for a concrete component, said lifting system comprising a void former positionable in the concrete component during casting of the concrete component, the void former defining a passage shaped to receive a locking stem of a lifting anchor assembly following casting of the void former in the concrete component, the passage defined by a tubular body having a lower end, the tubular body including an upwardly inclined end wall at the lower end of the tubular body, the void former positionable in the concrete component to define a void within the concrete component, the void shaped for locking engagement with a locking pin of the locking stem by rotation of the locking pin following insertion of the locking stem into the passage to lock the locking stem within the void to permit lifting load to be applied to the lifting anchor assembly, and the void former including a jacking plate and a threaded structure configured to threadably receive a threaded jacking rod inserted through the void former after removal of the lifting anchor assembly from the void filler to enable jacking of the concrete component relative to an underlying structure, wherein the jacking plate is movable relative to the concrete component during jacking of the concrete component. ### Claim 2 (depends on 1) The lifting system of claim 1, wherein the void former includes a base, and the threaded structure and the jacking plate are within the base. ### Claim 3 A lifting system for a concrete component, said lifting system comprising: a void former configured for incorporation into the concrete component during casting of the concrete component, the void former including: a base; a tubular body having a lower end coupled to the base, wherein an upwardly inclined end wall is attached to the lower end, the tubular body defining a passage configured to receive a locking stem of a lifting anchor assembly following casting of the void former in the concrete component, a jacking plate positioned below the tubular body; and a threaded structure positioned within the base and above the jacking plate, the threaded structure configured to threadably receive a threaded jacking rod inserted through the passage defined by the tubular body to enable jacking of the concrete component relative to an underlying structure. ### Claim 4 (depends on 3) The lifting system of claim 3, wherein the void former is positionable to define a void within the concrete component shaped for locking engagement with a locking pin of the locking stem by rotation of the locking pin following insertion of the locking stem into the passage to lock the locking stem within the void to permit lifting load to be applied to the lifting anchor assembly. ### Claim 5 (depends on 3) The lifting system of claim 3, wherein the tubular body is generally cylindrical and defines two inset channels. ### Claim 6 (depends on 3) The lifting system of claim 3, which includes a plate at the top of the tubular body, the plate defining an aperture having a shape corresponding to the passage. ### Claim 7 (depends on 6) The lifting system of claim 6, which includes a cap removably attached to the plate. ### Claim 8 A lifting system for a concrete component, said lifting system comprising: a void former positionable in the concrete component during casting of the concrete component, the void former including: a base including an upper shell and a lower shell; a tubular body having a lower end coupled to the base, the tubular body defining a passage configured to receive a locking stem of a lifting anchor assembly following casting of the void former in the concrete component; a plate coupled to a top of the tubular body, the plate defining an aperture having a shape corresponding to the passage; a jacking plate positioned within the upper shell and the lower shell; and a threaded structure positioned within the upper shell and lower shell above the jacking plate, the threaded structure configured to threadably receive a threaded jacking rod inserted through the passage defined by the tubular body to enable jacking of the concrete component relative to an underlying structure. ### Claim 9 (depends on 8) The lifting system of claim 8, wherein the void former defines a void within the concrete component shaped for locking engagement with a locking pin of the locking stem by rotation of the locking pin following insertion of the locking stem into the passage to lock the locking stem within the void to permit lifting load to be applied to the lifting anchor assembly. ### Claim 10 (depends on 8) The lifting system of claim 8, wherein the tubular body is generally cylindrical and defines two inset channels. ### Claim 11 (depends on 10) The lifting system of claim 10, which includes an end wall attached to a lower end of the tubular body. ### Claim 12 (depends on 11) The lifting system of claim 11, wherein part of the end wall is upwardly inclined. ### Claim 13 (depends on 8) The lifting system of claim 8, which includes a cap removably attached to the plate.