Device for producing recesses, oblique cuts, severing cuts or the like in the case of precast concrete floor slabs or the like
Номер патента: DE3714580C1
Опубликовано: 24-11-1988
Автор(ы): Hugo Bittlmayer
Принадлежит: Hugo Bittlmayer
Опубликовано: 24-11-1988
Автор(ы): Hugo Bittlmayer
Принадлежит: Hugo Bittlmayer
Реферат: The invention relates to a process and a device for achieving, namely cutting, recesses, oblique cuts, severing cuts or the like in the case of floor slabs (2), in particular precast concrete floor slabs. After the concrete (9) has been provided with a semi-hardened state by vibration, a displacement is achieved mechanically along the profile (5) of the recesses, oblique cuts, severing cuts or the like, preferably by means of a rotating mandrel (4). The edge of the cut-like depression in the concrete (9) produced by this means reproduces the profile of the desired recesses, oblique cuts, severing cuts or the like. After the concrete slab (2) has been lifted, a concrete part (3) remaining for example in the interior of a recess remains in the formwork or can be very easily removed. <IMAGE>
Tensioning device for the fastening belt of the compressed gas bottles to the back of a jacket or the like for underwater activity
Номер патента: US20020139827A1. Автор: Giovanni Garofalo,Giuseppe Minopoli. Владелец: HTM Sport SpA. Дата публикации: 2002-10-03.