Eccentric shaft with counterweight

Details Eccentric shaft with counterweight Eccentric shaft with counterweight

1989-11-13

1991-07-23

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 553, 418151, 74570, 74589, 74603, 403383, F04C 1804, F16B 700, F16D 106

Patent

active

050339451

ABSTRACT:
On an eccentric shaft having at least one counterweight (20) which is mounted to the shaft as separate part, the seat of the counterweight on the shaft exhibits a cross-section bounded by two circular arcs. One circular arc (43) which is diametrically opposite to the eccentric (23) has its center on the eccentric axis (41) and the other circular arc (44) has its center on the axis of rotation (42) of the shaft (24). Use of the drive shaft in a displacement machine of the spiral type of construction, in which a displacement body is held on a disk-shaped rotor which can be eccentrically driven with respect to a housing.

REFERENCES:
patent: 2325804 (1943-08-01), Shoemaker
patent: 4294562 (1981-10-01), Mullenberg

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