Abstract: The invention relates to a vacuum cleaner with a suction tube nozzle unit, consisting of suction hose, handle, suction tube and suction nozzle, the suction nozzle unit being releasably connected to the vacuum cleaner housing by a coupling device.
Abstract: A device for measuring the strength of pieces of compressed molding material. The device includes a probe pin and a stop surface arranged on the housing. On the end of the housing opposite the probe pin is arranged a cover for replacing batteries arranged within the housing. When the probe pin is inserted into the compressed molding material, a digital display indicates the resistance to insertion measured by a crystal unit converted as molding material strengths in N/cm.sup.2 or PSI.
Abstract: The invention relates to an apparatus of and a method of assembling a friction clutch structural unit wherein the clutch housing is centered with a cylindrical portion on a cylindrical guide of the flywheel and the axially correct position is found by axial application and measurement of the initial tension of the clutch main spring and the clutch housing and flywheel are rigidly connected to one another in this state.
Type:
Grant
Filed:
July 24, 1991
Date of Patent:
September 1, 1992
Assignee:
Fichtel & Sachs AG
Inventors:
Holger Westendorf, Andreas Krause, Friedrich Kittel