Hydraulic-pneumatic cylinder device with annular flexible bag as

Details Hydraulic-pneumatic cylinder device with annular flexible bag as Hydraulic-pneumatic cylinder device with annular flexible bag as

1989-11-28

1991-08-27

Look, Edward K.

Power plants

Pressure fluid source and motor

Pulsator

60591, 91 4R, 91443, F15B 700

Patent

active

050422537

ABSTRACT:
A hydraulic-pneumatic cylinder device of the invention comprises a tubular housing closed at both ends, and an actuating piston slidably guided in the housing and connected to a piston rod. A pair of hydraulic units, each of which comprises a pair of volume-variable liquid chambers in communication with each other through a flow control passage, are arranged within the housing on both sides of the piston to act thereon in opposite axial directions. A pair of air chambers, which are selectively connectable to an air supply source, are also provided within the housing to act on the respective hydraulic units. Operation of the cylinder device can be reliably adjusted by a flow regulating valve provided at each flow control passage.

REFERENCES:
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patent: 1389635 (1921-09-01), Dunkle
patent: 2165095 (1939-07-01), Frechette
patent: 2976845 (1961-03-01), Goldring
patent: 3029904 (1962-04-01), Goldring
patent: 3507189 (1970-04-01), Beckett et al.
patent: 3851713 (1974-12-01), Fedosenko et al.
patent: 4046060 (1977-09-01), Becker et al.
patent: 4072013 (1978-02-01), Barbareschi
patent: 4121449 (1978-10-01), Cele
patent: 4787206 (1988-11-01), Fabrowsky
Hydraulische Komponenten--Olhydraulik und pneumatik 18 (1974), No. 12, p. 909.

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