Switching arrangement for controlling the speed of hydraulic dri

Details Switching arrangement for controlling the speed of hydraulic dri Switching arrangement for controlling the speed of hydraulic dri

1992-03-23

1994-07-05

Look, Edward K.

Motors: expansible chamber type

Fluid supply through diverse paths to single expansible chamber

One path includes restriction

91444, 60494, F15B 1304

Patent

active

053257618

ABSTRACT:
A switching arrangement for controlling the speed of hydraulic drives, wherein a speed of the drive is assigned to a corresponding flow rate of a hydraulic medium. The flow rate is determined by a preselected pair of phased nozzles placed in the inlet and outlet lines. The nozzle flow rates are selected such that switching between a series of nozzle pairs creates a smoothly changing speed of the hydraulic drive, thus eliminating jolting during starting and braking.

REFERENCES:
patent: 3038449 (1962-06-01), Murphy et al.
patent: 3081942 (1963-03-01), Maclay
patent: 3474826 (1969-10-01), Breitsprecher et al.
patent: 3802318 (1974-04-01), Sibbald
patent: 3973747 (1976-08-01), Jagerstrom
patent: 4166506 (1979-09-01), Tezuka et al.
patent: 4518011 (1985-05-01), Stoll

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