Hydraulic control device for a work machine

Details Hydraulic control device for a work machine Hydraulic control device for a work machine

1992-02-05

1994-07-12

Smith, Jerry

Boots, shoes, and leggings

187 292, 187 9R, G06F 1520

Patent

active

053294416

ABSTRACT:
A control device for hydraulic equipment where an oil pressure sensor provides an oil pressure output. The sensed pressure output is used in a table to derive a controlled variable limit which is then compared with a controlled variable input. The smaller of the input and limit are used to control hydraulic pressure supplied to the hydraulic oil line. However, also included is a correction device which adjusts the table depending upon whether the output is at a desired oil pressure value or not.

REFERENCES:
patent: 4187546 (1980-02-01), Heffernan et al.
patent: 4510750 (1985-04-01), Izumi et al.
patent: 4532595 (1985-07-01), Wilhelm
patent: 4727490 (1988-02-01), Narita et al.
patent: 4742468 (1988-05-01), Ohashi et al.
patent: 4930975 (1990-06-01), Ito
patent: 5165377 (1992-11-01), Hosseini
patent: 5184699 (1993-02-01), Aoki et al.
Patent Abstract of Japan, vol. 15, No. 77 (M-1085), Feb. 22/91; & JP-A2300100 (Mitsubishi Heavy Ind Ltd), Dec. 12. 1990.

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