Lift truck with noise attenuated hydraulic circuit

Details Lift truck with noise attenuated hydraulic circuit Lift truck with noise attenuated hydraulic circuit

1992-04-06

1995-01-10

Kwon, John T.

Power plants

Pressure fluid source and motor

Having means controlling or attenuating shock vibration,...

181214, 248638, F16D 3102, B64D 3302

Patent

active

053795946

ABSTRACT:
A lift truck having a hydraulic circuit with a muffler for reducing noise created by the hydraulic pump and motor assembly. The muffler includes a cylindrical body and first and second end caps which define an expansion volume which reduces the magnitude of pressure pulsations generated by the pump, thereby reducing noise. In one embodiment, the muffler includes mounting pads, located on the muffler body, for attaching the muffler to the truck frame, and a flexible hose interconnects the muffler and pump.

REFERENCES:
patent: 2399756 (1946-05-01), Mott
patent: 3137138 (1964-06-01), Kalle
patent: 3543646 (1970-12-01), Iisima
patent: 3587784 (1971-06-01), Tait
patent: 3880252 (1975-04-01), Mucka
patent: 4063824 (1977-12-01), Baker et al.
patent: 4067195 (1978-01-01), Malecha
patent: 4068987 (1978-01-01), Crooks
patent: 4184564 (1980-01-01), Trainor
patent: 4988069 (1991-01-01), D'Silva
patent: 5036662 (1991-08-01), Knowlton
patent: 5040953 (1991-08-01), Tinsler
Fluid Kinetics-Model AFC Hydraulic Acoustic Filter National Advisory Committee for Aeronautics Report 1192, 1954.

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