Ball float vent valve

• Main Authors: Dayao Chen, William N O'Neill, Bruno L. Risatti, Michael A Zolvinski, Bill F Erdman
• Format: Patent
• Language: English
• Published: 30.08.2023
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; HYDRAULICS OR PNEUMATICS IN GENERAL; LIGHTING; MECHANICAL ENGINEERING; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

A ball float vent valve (30) for a hydraulic system (10) of a work machine (1) includes a valve body (32) having an inlet port (34), an outlet port (36) and an axial passageway (38) there-between. The passageway (38) may be defined by a cylindrical inlet chamber (40), a cylindrical outlet chamber (42) and a tapered seat (44) connecting the inlet chamber (40) and outlet chamber (42). The outlet chamber (42) may include an annular retaining groove (48) proximate the outlet port (36). A spherical float (46) may be positioned in the outlet chamber (42). The float (46) may be dimensioned to seal the passageway (38) when seated on the tapered seat (44). A retainer (50) positioned in the retaining groove (48) may include an outer crescent region (54) having a plurality of apertures (52), a center region (56) dimensioned to retain the float (46) in the outlet chamber (42), and a linking region (58) connecting the outer region (54) to the center region (56).