Abstract: A chemical vapor deposition apparatus for depositing films or coatings on semiconductor substrates. Substrates are supported within an air tight reactor and heated to a predetermined reaction temperature. A manifold disposed within the reactor, and having a plurality of openings therein, receives one or more reactive vapors and evenly distributes the vapors through the openings in the vicinity of the substrates, such that the vapors react at the substrate surfaces and a film or coating is deposited thereon. One or more cooling tubes substantially envelope the manifold, thereby maintaining the manifold at a temperature less than at least the reaction temperature such that the vapors do not prematurely react within the manifold. Hence, films and coatings are prevented from forming within the manifold, and sufficient unreacted vapors are supplied to the substrate to effect a satisfactory coating or film thereon.

Abstract: A composite structure for absorbing sound energy, comprising an outer porous layer covering a cellular layer, wherein said porous layer is made by forming a supple loose fabric from slivers each constituted by a plurality of relatively free mineral or synthetic fibres, substantially parallel to one another and shaping said supple fabric to its final form and rendering it rigid by means of a hardenable resin, while being subjected to pressure so as to become a thin, rigid lattice, with wide crossed lines, virtually uniformly smooth on at least its face opposite said cellular layer.

Abstract: A wristwatch having a housing with an electronic digital visual display. A motion activated switch means is provided in the housing to reset the visual display to a desired display. The switch means has a first and a second switch function to cause a display of a predetermined digital display and to further cause activation and stoppage of the predetermined digital display to a desired one.

Abstract: A switch device for use in a wristwatch. The device comprises a switch housing and a cavity defined within the switch housing. The cavity has a side wall with at least a portion thereof being arcuately extending, a top wall and a bottom wall. A spherical displaceable element, of magnetically attractable material, is located for movement within the cavity. The side wall, top wall and bottom wall are spaced apart a distance sufficient to permit free displacement of the displaceable element therebetween. At least one magnetic element is associated with the cavity and located in a portion of the side wall whereby to retain the spherical displacement element thereto by magnetic attraction when the spherical element is displaced thereagainst in the cavity. The spherical element, when retained by the magnetic element, is dislodged therefrom by an external force created by a predetermined movement of a wearer's arm to release the spherical element in the cavity by gravity.