Method and apparatus for injecting concrete repairing agent into a concrete structure
US5809736A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 1996 |
| Grant date | Sep 22, 1998 |
| Priority date | — |
| Expiry date | Apr 5, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04G23/0211
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An injection plug device for injecting an epoxy resin repairing agent into an arcuate injection groove formed in a concrete structure. A rod member made of the same or similar epoxy resin as the repairing agent, is inserted and attached in the groove and has an injection hole at its center through which the repairing agent is injected. A tube member protrudes from the center of the rod member and has an inner end portion communicating with the injection hole of the rod member. A pipe member is inserted into the tube member, and a check valve mechanism is provided between the inner end portions of the pipe member and the tube member. After the resin is injected into the concrete structure and the resin is solidified, the pipe member is easily broken and removed from the rod member, together with the pipe member and the check valve mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.