Plastic pipe bender and end socket former

Details Plastic pipe bender and end socket former Plastic pipe bender and end socket former

1992-11-12

1994-03-01

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

With indicator, signal, recorder, illuminator, or inspection...

Means permitting visual inspection by operator

72369, 72380, 264339, 269 45, 269 74, 425392, B29C 5308

Patent

active

052901661

ABSTRACT:
The device includes a left arm (11) and a right arm (10) hingably connected about a protractor scale (12). A left clamp and a right clamp (13 and 13') are slidably attached to the arms such that the spacing between the clamps is adjustable. Locking knobs (24A, 24B, 24A', and 24B') hold the clamps at the desired locations. Left and right socket formers (29 and 29') are slidably attached to the left and right clamps, respectively. Left and right levers (34 and 34') are used to extend the socket formers into a heated pipe (37) placed between the clamps to form integral pipe connecting sockets in the ends of the pipe. (A flexible mandrel is placed inside the pipe to prevent it from collapsing). Bending the arms to a desired angle on the protractor will bend the pipe to the same angle. Locking knob (18) holds the arms in place while the pipe cools. After the pipe is cooled and hardened, the levers are used to retract the socket formers from the pipe to release the pipe.

REFERENCES:
patent: 2898970 (1959-08-01), Testo
patent: 3072396 (1963-01-01), McBurney
patent: 3466707 (1969-09-01), Click et al.
patent: 3776539 (1973-12-01), Curtis et al.
patent: 3878720 (1975-04-01), Stange et al.
patent: 3884612 (1975-05-01), Parmann
patent: 4156588 (1979-05-01), Miller et al.
patent: 4158586 (1979-06-01), Usui
patent: 4273523 (1981-06-01), Levens
patent: 5129636 (1992-07-01), Bridgstock

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