EP 0397076 A1 19901114 - Electrohydraulic system.
Title (en)
Electrohydraulic system.
Title (de)
Elektrohydraulisches System.
Title (fr)
Système électrohydraulique.
Publication
Application
Priority
US 35033489 A 19890511
Abstract (en)
In a fork lift vehicle (10) that includes an extensible boom (14) pivoted at one end to a base (12) and carrying a fork platform (18) at the opposing end, fork height above a horizontal plane that intersect the boom/base pivot axis is determined upon initiation of an automatic mode of operation. A pair of sensors (44) provide associated signals as functions of boom extension and boom angle respectively. Boom extension is directly controlled by the vehicle operator during the automatic mode of operation, while boom angle is controlled as a combined function of the angle and extension sensor output signals (R3,A3), and desired platform height above horizontal. Thus, velocity of motion at the boom end platform remains directly controlled by the vehicle operator while verticle height of the platform forks is maintained.
IPC 1-7
IPC 8 full level
B66C 1/68 (2006.01); B66C 1/62 (2006.01); B66C 23/82 (2006.01); B66F 9/065 (2006.01); B66F 9/24 (2006.01)
CPC (source: EP)
B66F 9/0655 (2013.01)
Citation (search report)
- [A] US 4553899 A 19851119 - MAGNI RICCARDO [IT]
- [A] FR 2183782 A1 19731221 - CLARK EQUIPMENT CO [US]
- [A] WO 8801600 A1 19880310 - OESA AB [SE]
- [A] EP 0288314 A1 19881026 - LASER ALIGNMENT [US]
- [A] GB 966609 A
- [AP] DE 3800930 A1 19890803 - HFH HERBST FOERDER UND HEBETEC [DE]
- [A] DE 3602213 A1 19870730 - CORDES HUGO DIPL ING [DE]
- [A] DE 3310568 A1 19840927 - LIEBHERR HYDRAULIKBAGGER [DE]
- [A] F\RDERN UND HEBEN, vol. 34, no. 12, December 1984, pages 929-932, Mainz, DE; H.H. COHRS: "Verwendungsmöglichkeiten der Mikroelektronik in Tagebaugeräten"
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 0397076 A1 19901114; CN 1047061 A 19901121; JP H0318600 A 19910128
DOCDB simple family (application)
EP 90108550 A 19900507; CN 90103547 A 19900511; JP 12277190 A 19900510