Abstract: The present invention relates to a laser anemometer making it possible to determine the relative velocity between the anemometer and an ambient medium. The architecture of the anemometer includes a laser source, emission and reception optics for focusing a laser beam onto a measurement zone containing particles in suspension in the ambient medium and for receiving the radiation back-scattered by the particles. It also includes an optical mixer for mixing the received radiation and reference radiation representing the radiation emitted by the source, and a detector at the output of the mixer. The relative velocity between the anemometer and the ambient medium is determined by computation on the basis of the Doppler effect generated by the radiation and detected by the detector. The laser source is located remotely from a common support which carries the optical emission and reception system as well as the mixer. It is connected to this common support by at least one optical fiber.

Abstract: The present invention relates to a laser anemometer making it possible to determine the relative velocity between the anemometer and an ambient medium.

Abstract: A laser anemometer with several measurement directions is disclosed, in which an incident beam (3) is intercepted by two disks (91, 92) having a common axis which are driven in rotation about this axis. The two disks are provided with transparent and reflecting sectors arranged so that the incident beam successively follows three different paths (3x, 3y, 3z). The axis common to the two disks intersects the axis of the incident beam (3). Mirrors reflect the directed beam in mutually orthogonal directions defining a three-dimensional orthogonal reference system in which the three components of the speed may be successively measured. The anemometer of the invention is particularly suitable for the measurement of the three components of the speed of an aircraft with respect to still air.

Abstract: A pipe clamp having two clamp segments held together by a bridge piece. The bridge piece features interlocking segment ends. Opposite the bridge piece, a tensioning member is used to tighten the pipe clamp. The tensioning member includes two axially parallel, back-to-back bolts connected at their heads and passing through portions of opposed clamp segments.

Abstract: A pipe hanger between whose legs a joint member is inserted and held by the force of a bolt. Both a rigid connection of the joint member with the pipe hanger and a slipping connection of the joint member with the pipe hanger is achieved enabled by spiral ridges of teeth which in the case of the rigid connection engage and in the case of the slipping connection glide upon each other.