Abstract: A flexible joint, especially adapted for pipes in an exhaust system of an engine is disclosed. A locking ring is disposed over a flared end of the first pipe and a stop flange and a slidable locking flange are provided on the second pipe with a wave spring disposed between them. A sealing ring having a spherical surface is seated against a sealing socket in the flared end of the first pipe. Complementary bayonet coupling members on the locking ring and on the locking flange, respectively, are provided whereby the joint may be assembled by pressing the locking ring and the locking flange together against the resistance of the wave spring and rotating them relative to each other to engage the bayonet coupling.

Abstract: An electrically controlled brake system for a towed vehicle such as a house trailer and means for selectively testing the operability of such system both prior to and during towing operation.

Abstract: The device relates to a thermometer in which the thermometer body and mounting brackets are transparent and in which the thermometer body is adapted to be mounted in spaced relationship on a planar surface such that viewing may occur through the thermometer with minimal visual interference.