Variable force cylinder device

Details Variable force cylinder device Variable force cylinder device

1993-11-30

1995-08-15

Ryznic, John E.

Expansible chamber devices

Effective area of working member end face selectively variable

With diaphragm

92162R, 91519, F01B 3100, F15B 1100

Patent

active

054409683

ABSTRACT:
A variable force cylinder device with a piston reciprocated by a pressurized fluid in a cylinder chamber, in which the piston has a large-diameter portion and a small-diameter portion, the cylinder chamber has a large-bore portion corresponding to the large-diameter portion of the piston and a small-bore portion corresponding to the small-diameter portion of the piston, and a variable force mechanism is provided for varying a pressure-receiving area of the piston under an interaction of the piston with the cylinder chamber varying depending on the phases of the piston stroke.

REFERENCES:
patent: 1241691 (1917-10-01), White
patent: 2293334 (1942-08-01), Ernst
patent: 2574299 (1951-11-01), Sterett
patent: 3842717 (1974-10-01), Prescott
patent: 4104904 (1978-08-01), Yaguchi et al.
patent: 4173171 (1979-11-01), Lange
patent: 4240620 (1980-12-01), Tunkers
patent: 5167419 (1992-12-01), Robertson

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