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US 4,455,838 AGranted
Control device for a balancing apparatus
AssigneeToyama Machine Works, Ltd.
InventorsKita Junichi, Toshio Nagahara
Life of this patent
Estimating the term…
Abstract
A control device for a balancer includes a load detector for determining the torque exerted on a driving screw attributable to the load driven and supported thereby. A fluid pressure control device increases or decreases the pressure input to a balancing torque generator in response to the detected load at a given time instant.
Claims9
A balancing pressure control device, comprising:
- a main circuit including a pressure control valve having a pilot valve connected between a balancing cylinder and a pressurized fluid source, to supply a pressurized fluid at a predetermined pressure to said cylinder;
- a first control circuit for applying a control pressure corresponding to a fixed load on a part to be balanced by said cylinder to a pilot pressure input terminal of said pressure control valve;
- and
- a second control circuit for detecting a variable load applied to said part to be balanced, for producing a control pressure corresponding to the variable load, and for applying said control pressure thus produced to said pilot pressure input terminal of said pressure control valve.
1 more element
Dependencies are inferred from the claim text.