Plastic and nonmetallic article shaping or treating: processes – Treatment of material by vibrating – jarring – or agitating... – By reciprocating or vibrating mold
Patent
1983-08-01
1986-03-25
Silbaugh, Jan
Plastic and nonmetallic article shaping or treating: processes
Treatment of material by vibrating, jarring, or agitating...
By reciprocating or vibrating mold
249 63, 249 83, 249 91, 249 93, 264228, 264229, 264262, 264274, 264275, 264279, 2642791, B28B 108, B28B 2160, B28B 2188, B28B 2312
Patent
active
045782350
ABSTRACT:
Manufacturing lined concrete pipe in a reduced time, and provision of such pipe with reduced tendencies to rusting and liner separation, are achieved by a cartridge assembly (22) movable to and away from the pipe machine, a work stand assembly (23) for positioning the cartridge to receive a liner, liner tensioning structures (68) and liner to cartridge clamps (87) for moving the liner to the cartridge, tightening the liner, and holding the liner during transport by the cartridge, and tension bars (96) controlling wire tension during pipe formation. Concurrently with operation of the standard pipe machine, the work stand operates to place a liner on the cartridge. During the stripping cycle of the pipe machine, the cartridge delivers the liner to the core. During the pipe machine vibration under pressure cycle, the tension on the liner tension wires is relieved.
REFERENCES:
patent: 2816323 (1957-12-01), Munger
patent: 3836612 (1974-07-01), Mann
patent: 4151246 (1979-04-01), Lester et al.
Pipe Plus Machine brochure of Hawkeye Concrete Products Co., Trocal Lining System Materials from Dynamit Nobel.
T-Lock Amer-Plate Materials from Amercoat Corporation.
Schmidgall Hartzell H.
Schmidgall Jon A.
Hawkeye Concrete Products Co.
Lorin Hubert C.
Silbaugh Jan
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