Wall lift and method of lifting a wall
US6000898A · kind A · utility
Inventor
Key dates
| Filing date | Jan 29, 1999 |
| Grant date | Dec 14, 1999 |
| Priority date | — |
| Expiry date | Jan 29, 2019 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04G21/168
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention is a wall lift which includes a base, lifting arm, wall attachment bracket and at least one safety strap as the main components. Each main component includes its own individual components which aid in the operation of the wall lift. The wall lift raises a prefabricated wall by lifting at a top of the wall so that the wall rotates about a bottom of the wall. The lifting arm is rotatably attached to the base. The lifting arm includes a motor and starts in a vertical position. The motor includes a cable attached to a wall movement unit. The wall movement unit attaches to the top of the wall and is also slidably attached to the lifting arm. The lifting arm rotates in the direction that the wall is being lifted as the motor retracts the cable. The cable pulls the wall movement unit towards a top of the lifting arm during retraction. The wall is lifted due to its attachment to the wall movement unit as the wall movement unit is pulled by the cable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.