Abstract: The present invention provides a removable power unit for a load carrying vehicle such as a golf caddy, having a drive motor coupled to a reduction gear driving in rotation a drive shaft having a drive wheel at each of its ends, the drive shaft being formed of two shaft sections extending respectively on each side of the reduction gear, characterized in that at least one of the shaft sections is mounted for rotation inside a sleeve through a bearing inserted in this sleeve, this latter being secured by one of its ends to the casing of the reduction gear. It also relates to a load carrying vehicle equipped with such a power unit.

Abstract: An installation for rapidly obtaining a high vacuum, comprising two compression stages, the first of which is a liquid ring vacuum pump, characterized in that means are provided for instantaneously coupling or dissociating the first stage and the second stage. The invention concerns also a process intended to be used in said installation.

Abstract: The present invention relates to a process for providing make-up heat in a mechanical vapour recompression evaporator (1, 8, 9).It includes using the evaporation vapour created in another evaporator (5) called make-up evaporator.The invention finds particular application in the dairy industry.

Abstract: A process for cooling a hot concentrated product coming from an evaporator comprising evaporation means and a condenser, in relation with a vacuum source, which consists in providing expansion by stages at decreasing pressures during which the hot concentrated product is cooled by stages, a process which can be used in the case where the product before concentration is available at low temperature.It is characterized in that with each expansion step there is associated a condenser where the vapor released at each corresponding expansion step is condensed, at least one of said condensers having passing therethrough a low temperature product, the product thus reheated being then fed to said evaporator for concentration.