초록 ▼

A duct-shaping machine having a pair of major-axis duct-shaping modules for elongating the cross section of a cylindrical duct as they are forced apart, a minor-axis compaction assembly having first and second compactors pressing inwardly towards the center line between the modules to flatten the si

A duct-shaping machine having a pair of major-axis duct-shaping modules for elongating the cross section of a cylindrical duct as they are forced apart, a minor-axis compaction assembly having first and second compactors pressing inwardly towards the center line between the modules to flatten the sides of the duct.

대표청구항 ▼

A duct-shaping machine comprising a frame, first and second major-axis duct-shaping modules each having a duct pressing major surface, said modules being elongated and having ends and first and second opposite sides, said major surfaces being spaced apart and facing in opposite directions, a major-a

A duct-shaping machine comprising a frame, first and second major-axis duct-shaping modules each having a duct pressing major surface, said modules being elongated and having ends and first and second opposite sides, said major surfaces being spaced apart and facing in opposite directions, a major-axis forcing means on said frame and connected to said modules for forcing said modules to move apart so as to cause said major surfaces to move apart with respect to each other substantially linearly in a first direction, a minor-axis compaction assembly comprising spaced first and second comactors having minor-axis compacting surfaces facing said modules and extending along said first and second sides of said modules, minor-axis forcing means for forcing said minor-axis compacting surfaces toward said modules, said minor-axis forcing means comprising an arm-holding assembly attached to said frame, a pair of elongated arms extending normally to the elongation of said modules, means pivotally attaching said arms to said holding assembly for the swinging of said arms about respective arm axes which are disposed on opposite sides of a plane extending through the centers of said pressing surfaces and extending along said pressing surfaces, said arm axes being disposed substantially with their elongation parallel to the elongation of said pressing surfaces, pressure-applying means pivotally connected to the upper ends of said arms for the hinging of the upper ends of said arms on said pressure-applying means about pressure axes each of which are parallel to said arm axes and disposed on the opposite side of said modules from said arm axes, means attaching the lower ends of said arms to those sides of said compactors which are opposite said modules.