Air bleeding system for hydraulic closed circuits

Details Air bleeding system for hydraulic closed circuits Air bleeding system for hydraulic closed circuits

1988-09-26

1989-09-05

Michalsky, Gerald A.

Power plants

Pressure fluid source and motor

Methods of operation

60453, 60476, 114150, 137171, F15B 2104

Patent

active

RE0330434

ABSTRACT:
A closed hydraulic system (10) of the type for steering a boat including a hydraulic cylinder (18) having port and starboard sides (20, 22) and a piston (24) within the cylinder (18) moveable therebetween. A steering pump (12) has first and second fluid outlets (14, 16). Port and starboard hydraulic lines (26, 28) interconnect the port and starboard sides (20, 22) to the first and second outlets (14, 16) respectively, for fluid communication therebetween. A closed separator tank (30) separates air from hydraulic fluid. The tank (30) includes port and starboard tank [line] lines (32, 34) in fluid communication with the port and starboard hydraualic lines (26, 28) respectively. The tank (30) includes a bleeder valve mechanism for selectively allowing fluid flow in one direction from the port tank line (32) into the separator tank (30) and out the starboard tank line (34) and alternatively in the opposite direction.

REFERENCES:
patent: 2612237 (1952-09-01), Tear
patent: 3233407 (1966-02-01), Smith
patent: 3504882 (1970-04-01), Vargo
patent: 3576192 (1971-04-01), Wood et al.
patent: 3885389 (1975-05-01), Hull
patent: 3958420 (1976-05-01), Yokota
patent: 4042281 (1977-08-01), Ury
patent: 4398561 (1983-08-01), Maldavs
patent: 4449470 (1984-05-01), Rump
patent: 4518010 (1985-05-01), Mucheyer et al.

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