| 摘要 |
The subject of this inventive patent is a porthole (opening device which allows the circulation of air and light, placed on the roof of a caravan/campervan and other vehicles or on the deck of boats). This porthole, unlike the others that exist (that are of the type with scissors stay opening or of the type with pantograph opening) consists of a fixed portion and of a portion rotating on an spindle perpendicular or almost perpendicular to the bearing base; this feature makes it practical and functional; specifically, the rotating top portion may be rotated on the spindle without any discontinuity while allowing the inlet/outlet of air and light according to the actual direction of rotation. As can be seen from drawing 1, the rotating porthole is formed essentially by a fixed peripheral structure (1) capable of being attached fixedly and firmly to the structure of the roof and/or deck, by a coaxial rotating structure (2) which, thanks to an operating device (3) may be rotated on the spindle (4), by a cover (5) which may be raised or lowered by operating the device (6) or another similar control in order to lower/raise the cover itself. |
