Concrete mixing system
US4075711A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 9, 1976 |
| Grant date | Feb 21, 1978 |
| Priority date | — |
| Expiry date | Dec 9, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28C5/1223
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An upright concrete mixing chamber having an inlet formed in the top thereof and an outlet formed in the bottom thereof is supported in a lowered position upon a horizontal working surface so as to provide operator access to the inlet when the operator is standing upon the working surface. A plurality of elongate members are pivotably connected at one end to a base member in engagement with the working surface, and at the other end are pivotably connected to the mixing chamber so as to define a parallelogram that is generally horizontal to the working surface when the mixing chamber is in the lowered position. A hinged lifting apparatus is provided for pivoting the elongate parallelogram members from the horizontal position to a second position generally perpendicular to the working surface and thereby elevating the mixing chamber to a raised upright discharge position a sufficient distance above the working surface to permit movement of a cement transport device beneath the outlet for receiving a discharge of concrete mixture therefrom. The mixing system further includes a motor for providing continuous rotary motion to blending paddles mounted in the mixing chamber, and selective…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.