Abstract: A plenum mounted, flat metal panel diaphragm masking loudspeaker includes a flat, stamped sheet metal frame which has a deployed state and an undeployed, flat state well suited to storage or shipping. A large, movable tab at the bottom of the frame is weakened by a series of small apertures and forms a hinge or fold line. Electrical accessories including a transformer, a rotary switch for selecting transformer taps and signal connections are included in an enclosed box mounted on the foldable tab. The flat panel masking loudspeaker is shipped flat in the undeployed state and then the large tab is deployed by being folded outwardly before installing the flat panel masking loudspeaker in a ceiling plenum. During installation, the tab is folded along the hinge or fold line out to approximately 90.degree.

Abstract: A structure for a compression driver motor assembly which utilizes a pot with an integral top plate and a pole cap, thereby reducing magnetic losses and permitting manufacture of a driver structure with fewer parts and reduced weight. A more efficient process for manufacture of the motor assembly is also disclosed. The pot is manufactured with an integral top plate which is adapted for use with a large pole cap. The pole cap is affixed to the top of a permanent magnet and forms the magnetic gap with the top of the pot. The magnetic circuit of the driver thus includes a permanent magnet, a pot, a magnetic gap and the pole cap. The motor assembly is assembled in a process requiring fewer steps and less elaborate tooling than the motor assembly of the prior art.

Abstract: A fender and support bar is provided for automotive vehicle wheel sets. The fender comprises a panel having a support seat formed thereon intermediate its longitudinal ends and the support comprises an elongated tube which is rigidly connected to the panel. The rigid mechanical connection is provided by pairs of clamping plates disposed at opposite sides of an inner wall of the support bar and a wheel set facing surface of the fender panel. A plurality of clamping bolts are positioned along the elongated clamping plates and the heads of these bolts are secured to that clamping plate inserted within the interior of the tube to facilitate assembly. Mounting of the support bar in supported relationship to a vehicle chassis is by a telescopic sleeve assembly utilizing compression clamps to obtain a fixed position connection.