Abstract: In a headset (100, 200) for receiving infrared or radio signals and transforming them into an audio transmission in the audible range, the headset essentially comprises a base housing (101), one continuous or two individually guided supporting bands (102, 103) each with a miniature loudspeaker (300, 400) arranged at the end. The miniature loudspeaker has a loudspeaker body (305, 405) on the ear side, which loudspeaker body assumes a place in the auditory passage or surrounds the whole external ear. The loudspeaker body (305, 405) on the ear side is supported rotatably with respect to the supporting band (102, 103) or a joining part (301, 401).

Abstract: In the case of a horizontal filter surface, a base plate together with U-shaped bars fixed to the surface thereof form the support for the filter surface. Between the bars, the profile legs form drainage pipes for the filtrate. The passage of the bars is used as a pipe for a heating or cooling medium. At their ends, the bars are interconnected by connecting channels in such a way that the bars form a single pipe, the heating or cooling medium being supplied by an inlet pipe connection and is removed at the end of the pipe by an outlet pipe connection. The filtrate collecting in the pipes is drained off by the drain pipe connection. The arrangement ensures a good heat transfer to the filter cake located on the filter surface and also constitutes an uncomplicated, inexpensive solution, because the bars simultaneously form the drainage pipes for the filtrate.

Abstract: There is provided a combination plug type lock for briefcases, purses and the like wherein the upper portion is disposed on the flap of a briefcase and includes an outwardly-biased element, the lower portion is disposed on the corresponding opposite part of the briefcase and includes a shackle which slidingly receives the upper portion and engages the outwardly-biased element during closure of the lock, and wherein a locking mechanism is disposed in the upper portion in the region of the outwardly-biased element.