Abstract: In a method of making an exhaust gas collector, a collector housing is made from a tubular blank, and subsequently, an inlet duct is formed through a widening process to provide a substantially rectangular cross section with rounded narrow sides. The inlet duct is provided with a head flange. At the outlet side, the collector housing is necked by a press-forming process so as to shape an outlet duct having a substantially circular cross section which is reduced in size compared to the cross section of the collector housing. Attached to the outlet duct is an end flange.

Abstract: In a method of making an exhaust gas collector, a collector housing is made from a tubular blank, and subsequently, an inlet duct is formed through a widening process to provide a substantially rectangular cross section with rounded narrow sides. The inlet duct is provided with a head flange. At the outlet side, the collector housing is necked by a press-forming process so as to shape an outlet duct having a substantially circular cross section which is reduced in size compared to the cross section of the collector housing. Attached to the outlet duct is an end flange.

Abstract: A manually operated appliance for the treatment of textile floor coverings with a foaming cleaning liquid, comprising a shaft-like handle with a bristled cleaning element attached thereto, a container for cleaning liquid replaceably mounted on the handle by means of a holding element, and a hose for connecting the container and cleaning element which is operatively connected to a dosing mechanism regulating the outflow of cleaning liquid from the container. The hose has a grooved internal profile and the cleaning element is a hollow brush having an inlet nozzle on its top surface for the hose level with a socket for fixing the handle. Outlet holes face the floor between rows of bristles arranged at the outer edges of the hollow brush, and a distributor plate covers the brush surface.