Method for lifting and supporting a new slab foundation with hydraulic jacks
US10704252B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 30, 2018 |
| Grant date | Jul 7, 2020 |
| Priority date | — |
| Expiry date | Jan 30, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04B2001/3588
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for lifting and supporting above ground a concrete slab foundation employing hydraulic jacks includes installing piers in the ground, each with a pier extension protruding above ground. A lifting assembly is placed over each pier extension, the lifting assembly having a lift sleeve and upward extending lifting members. Then the slab foundation is poured, bonding a portion of the lifting assembly in concrete. After the slab foundation hardens, a jack is positioned on top of the pier extension, and lifting arms of the jack engage the lifting members. The jack is actuated to exert an upward force on the lifting assembly to lift the slab foundation above the ground. Then, the lift sleeve is rigidly secured to the pier extension, allowing the jack and lifting arms to be removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.