Abstract: A conveyor arrangement incorporated in a continuous oven comprises a plurality of support rails, one mounted in each oven chamber, and load-carrying frames suspended from the rails and arranged to move through the chambers. Each chamber has at least one drive pinion assembly comprising two pinions drivingly coupled by a chain drive, and each pinion can mesh with a rack to advance the load-carrying frames through the oven chamber. Each rack is secured to a respective load-carrying frame.

Abstract: An industrial furnace, particularly a single-chamber vacuum furnace, for heat treatment of metallic workpieces, with a heating chamber which is formed in a housing, which heating chamber is heatable via heating elements and is provided on the bottom and on the ceiling with a closable chamber opening for the passage of a quenching gas which can be circulated by means of a blower. A flap is swingably mounted at the chamber opening underneath a closing slide, which chamber opening is provided for the entrance of the gas. The flap controls the incoming flow of gas within the range of the free cross-section of the chamber opening.

Abstract: A vacuum aluminum soldering furnace comprising an evacuatable soldering cber having two lateral heating zones. The soldering chamber has a middle heating zone arranged parallel to the lateral heating zones and the heating element of the middle heating zone is preferably arranged removable from the soldering chamber.