Machine and method of making duct coupling

Details Machine and method of making duct coupling Machine and method of making duct coupling

1992-07-02

1994-08-16

Crane, Daniel C.

Metal deforming

By deflecting successively-presented portions of work during...

By use of deflectors arranged to bend work longitudinally of...

72172, 72173, 72177, B21D 708

Patent

active

053375912

ABSTRACT:
A machine for coiling a sheet metal strip having a pair of lateral flanges joined by a channel shaped rib with oppositely opening lateral grooves where the rib is on the outside of the coil, includes a pair of cooperating fluting rolls between which the strip is fed to flute the flanges, one roll being circumferentially grooved to receive the rib of the strip, and a wedge shaped coiling shoe is positioned to receive the strip from the rolls. The shoe has three strip coiling ramps, two of which bear against the flanges and embrace the rib, and the third bears against the top of the rib. These ramps are positioned to deflect the strip into a coiled configuration. A pair of ears on the coiling shoe enters the oppositely opening lateral grooves and cooperatively with the fluting of the flanges prevents collapse or distortion of the grooves.

REFERENCES:
patent: 1771955 (1930-07-01), Fork
patent: 1843064 (1932-01-01), Chesney
patent: 2103142 (1937-12-01), Bowers
patent: 2257760 (1941-10-01), Nyberg
patent: 2775284 (1956-12-01), Hermann
patent: 3319445 (1967-05-01), Stalker
patent: 3472056 (1969-10-01), Gregg
patent: 4080815 (1978-03-01), Foster
patent: 4562630 (1986-01-01), Larsson

Affiliated with

Also associated with

Rating

Machine and method of making duct coupling does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Machine and method of making duct coupling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Machine and method of making duct coupling will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-944187