Fragmented slab lifting apparatus and method

(10) US 8,591,143 BI
(22) May 10, 2013
(45) Nov. 26, 2013
(71) Ronald A. Knapp, Bonita Springs, FL (US)
(57) A slab jack assembly for raising a fragmented slab from between sections of a concrete slab from which the fragmented slab is cut comprises a planar support positionable on top of the fragmented slab. Jacks are mounted on opposite sides of the planar support to engage an upper surface of the concrete slab. Securement pins mounted on the planar support are insertable into holes bored in the plurality of fragments in the fragmented slab and expandable within the holes to secure the fragments...

Related articles:

Issue 11/2023

Concrete slab with drainage holes

(10) EP4223930A1 (22) 08.02.2022 (43) 09.08.2023 (57) A prefab concrete slab (1) comprising: a concrete slab having an upper surface and a lower surface;a plurality of inserts (5) defining holes...

more
Issue 07/2019

Slab lifting clamp

(10) US 2019/0144245 Al (22) 13.11.2018 (43) 16.05.2019 (57) A disclosed gripping system for lifting planar objects com­prises a back plate, center sliding plate, lifting pin assembly and cam plate...

more
Issue 02/2015 New structural frameworks

An inflatable concrete dome

It is very expensive to use currently available construction methods to build free-form concrete shells. As a result, many designs are not implemented due to shortage of funds, but replaced with...

more
Issue 09/2013

Lightweight slab or similar structural element which can receive equipment that is accessible and that can extend through the slab

(10) US 2013/0160385 A1 (22) Jun.24,2011 (43) Jun. 27, 2013 (76) Alberto Alarcon Garcia, Madrid (ES) (57) A lightweight slab including two main parallel reticular reinforcements (5) (6) separated by...

more
Issue 09/2013

Slab track

(10) WO 2013/102504 A1 (22) 19. Oktober 2012 (43) 11. Juli 2013 (71) RAIL.ONE GMBH [DE/DE]; Ingolstädter Str. 51, 92318 Neumarkt (DE) (57) The invention relates to a slab track (I) comprising a...

more