Clamping cylinder system

Details Clamping cylinder system Clamping cylinder system

1989-10-26

1991-10-29

Hoag, Willard

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With means to close mold

4254516, 4254519, 425593, B29C 4504, B29C 4564

Patent

active

050611755

ABSTRACT:
A clamping cylinder system used in a diecast machine and the like and includes a clamping cylinder and a booster cylinder. The booster cylinder has two chambers different in inner diameters, and a booster piston has a small diameter portion and a large diameter portion, which correspond to the inner shapes of these chambers. During the low pressure of the clamping cylinder, the oil pressure is given to the clamping cylinder, with the booster cylinder being in non-operating condition, and, when a booster operating signal is given, the booster piston is operated. With this arrangement, a boosted pressure force in accordance with the ratio of the area between the small diameter portion and the large diameter portion of the booster piston can be obtained.

REFERENCES:
patent: 2848771 (1958-08-01), Eggenberger
patent: 3156014 (1964-11-01), Wenger
patent: 3373459 (1968-03-01), Hehl
patent: 3505708 (1970-04-01), Moslo
patent: 3677685 (1972-07-01), Aoki
patent: 4249880 (1981-02-01), Wohlrab
patent: 4443179 (1984-04-01), Wohlrab
patent: 4565116 (1986-01-01), Hehl
patent: 4846664 (1989-07-01), Hehl

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