Invention Grant
- Patent Title: Method and apparatus for lifting and leveling a concrete panel
- Patent Title (中): 一种用于提升和调平混凝土面板的方法和装置
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Application No.: US13594604Application Date: 2012-08-24
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Publication No.: US08875471B2Publication Date: 2014-11-04
- Inventor: Baltazar Siqueiros
- Applicant: Baltazar Siqueiros
- Agent Morland C. Fischer
- Main IPC: E04G21/14
- IPC: E04G21/14 ; B66C1/66 ; E04B1/41

Abstract:
A lifting apparatus to be embedded within a precast concrete panel or slab to enable the panel to be lifted, positioned atop a road bed, and elevated above the road bed. A lifting apparatus is located at each corner of the panel. Each lifting apparatus has a threaded sleeve extending through the panel to receive a removable threaded lifting bolt by which to establish a lifting point at which a lifting force is applied to lift and position the panel. When the threaded lifting bolt is rotated completely through the threaded sleeve, a pushing force is applied against a base plate, whereby to elevate the panel above the road bed as is necessary to make the panel level with adjacent panels during the construction or repair of a roadway. Grout is pumped through the panel to fill the space between the panel and the road bed.
Public/Granted literature
- US20140053475A1 METHOD AND APPARATUS FOR LIFTING AND LEVELING A CONCRETE PANEL Public/Granted day:2014-02-27
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