Grout delivery apparatus and method
US5878921A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 1995 |
| Grant date | Mar 9, 1999 |
| Priority date | — |
| Expiry date | Dec 6, 2015 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04F21/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A grout delivery apparatus and method for delivering grout through a flexible conduit from a bulk supply of grout to a hand tool. The bulk supply of grout is held in a hopper which feeds the grout under gravity to a pump. The pump is driven by an electric motor which receives its electrical energy through a controller. The controller is adjustably preset to control the electric motor as a function of the individual settings on a multifunction switch operable by the worker. The switch can either be mounted on the hand tool and directly wired to the controller or incorporated into a remote transmitter which transmits the particular switch position to a receiver on the controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.