摘要:
A device is provided for directly reading from a chart the heading to be followed by an air or sea-going vehicle, comprising a disk with, at its periphery, a circular coaxial graduation of the "compass card" type movable in rotation with respect to this disk, the latter being itself mounted for rotation about a fixed shaft fast with a support, via a rotary mount with offset adjustable in modulus and orientation. The disk further comprises a rectilinear scale for determining the modulus of the offset, as well as a reference mark for indicating the orientation of this offset on the circular graduation. The scale is graduated in successive values representative of the wind (or current) speed/proper speed of the vehicle ratio.
摘要:
The invention provides a method and device for determining the heading with wind (or with current) of an air (or sea-going) vehicle. The device of the invention comprises a support element with two coaxial compass cards, one of which is assigned to the heading without wind and the other serves as indication of the heading with wind, as well as a plurality of rings which may be mounted for rotation coaxially with said compass cards and in the coronal space therebetween. Each of the rings corresponds to a particular situation of the aircraft determined by a wind speed/aircraft speed ratio and has a pointer intended to be oriented along the wind bearing. A series of lines ensures the correspondence between the compass cards.
摘要:
Process and apparatus for the display of relief moving pictures. The displayed image is formed behind a lenticular frame having vertical cylindrical lenses and its spacing exceeds that of the frame. The picture is obtained either by a screen attached to the frame, or by projecting the picture from a separate screen. The apparatus has useful application in visiophony, television, simulation, etc.
摘要:
A textile glide comprises a layer of fiber material having first and second opposite generally flat faces. Low friction material is integrated with the layer of fiber material so as to have a friction reducing effect on at least one of the first and second faces.
摘要:
A non-woven synthetic sheet material for use in sound insulation and/or thermal insulation is described. The sheet material is a felt or mat of substantially uniform synthetic fiber thickness and defines opposed flat surfaces. The sheet material is needle-punched from at least one of the opposed flat surfaces thereof to cause the synthetic fibers to intertwine to form a pliable sound and/or thermal insulating sheet. The insulating sheet has a density in the range of from about 100 to 1500 g/m2 and a homogeneous integrity resistant to fragmentation. Preferably a polymeric film is interconnected to a surface of the synthetic fiber sheet by a further needle punch step the polymeric film is preferably a metalized polyethylene film. The material has a multitude of uses in the construction industry. The felt may also be provided in strip form for use in the framing of wooden structures to sound insulate interconnected parts.
摘要翻译:描述了用于隔音和/或热绝缘的无纺合成片材。 片材是具有基本均匀的合成纤维厚度的毡或垫,并且限定相对的平坦表面。 片材从其相对的平坦表面中的至少一个被针刺,以使合成纤维缠结以形成柔韧的声音和/或隔热片。 绝缘片的密度范围为约100至1500g / m 2,并且具有均匀的完整性以抵抗碎裂。 优选地,聚合物膜通过另外的针刺步骤与合成纤维片的表面互连,聚合物膜优选为金属化聚乙烯膜。 该材料在建筑行业有广泛的用途。 毛毡也可以以带状形式提供,用于木结构的框架以隔离互连部件。
摘要:
A videocommunication network is connected between videophone terminals and a picture bank through voice switching units and wide-band switching units included in central offices. A purely telephonic communication can be established between two videophone terminals during a videocommunication between one of the two terminals and the picture bank. Once the videocommunication has been established between the videophone terminal and the picture bank via network voice switching units, the local telephone line assigned to the videophone terminal is automatically released while only a local wide-band line assigned to the videophone terminal is occupied for exchanging vision signals and also data signals with the picture bank via wide-band switching units.