Sweep ell production method

Details Sweep ell production method Sweep ell production method

1981-02-23

1982-11-16

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Production of continuous or running length

264150, 264151, 2642094, 264295, B29C 1707, B29C 1714, B29D 2304

Patent

active

043594468

ABSTRACT:
A sweep ell production apparatus (10) receives extruded plastic pipe (98) from an extruder (96). The plastic pipe (98) is passed through a curved sizing sleeve (100) which imparts a curvature to the plastic pipe (98) while at the same time sizing the pipe wall thicknesses and exterior diameter. After the pipe (98) passes through the sizing sleeve (100) a clamp (84) is secured about the periphery of the pipe (98). The clamp (84) is driven by means of a motor (34) which causes the clamp (84) to travel along an arc (112) which corresponds with the radius of curvature of the sizing sleeve (100). As the clamp (84) draws pipe (98) along the arc (112) of travel, the pipe (98) is set to have the desired radius of curvature. After a selected arc length of pipe (98) is produced, the pipe section is cut to produce the desired sweep ell.

REFERENCES:
patent: 3748077 (1973-07-01), Williams
patent: 3753635 (1973-08-01), Barnett
patent: 3884612 (1975-05-01), Parmann

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