Apparatus for slide forming of prestressed concrete
US4492552A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1982 |
| Grant date | Jan 8, 1985 |
| Priority date | — |
| Expiry date | Apr 30, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28B23/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A combination long lower mold and pretension bench for the formation of prestressed concrete materials is constructed by serially connecting plurality of unit lower molds of concrete, attaching prestressing steel wire tension benches one each to the foremost and rearmost unit lower molds, and fastening the unit lower molds and the tension benches collectively with steel wires. Prestressed concrete materials are obtained by stretching prestressing steel wires along the upper surface of the long lower mold, continuously pouring and placing stiff-consistency concrete on the long lower mold, causing a slide upper mold to run on the concrete thereby shaping the concrete in a required cross section, curing the shaped concrete strip, and cutting the cured concrete strip into pieces of a desired size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.