| 摘要 |
Proportioning device for paste materials used in the construction of buildings comprising a tronco-conical enclosing body (1) with two apertures, one aperture (2) of greater diameter than the other aperture (3). The greater diameter aperture (2) includes a deformable reinforcement ring (4) and the material forming the enclosing body (1) is flexible and elastically deformable. The tronco-conical enclosing body (1) divides into two conically different portions. |
