|
| US3987623 | 23. Jan. 1976 | 26. Okt. 1976 | Caterpillar Tractor Co. | Controlled priority fluid system of a crawler type vehicle |
| US4011721 | 14. Apr. 1976 | 15. März 1977 | Eaton Corporation | Fluid control system utilizing pressure drop valve |
| US4074528 | 2. Aug. 1976 | 21. Febr. 1978 | J. I. Case Company | Hydraulic control system with priority flow control |
| US4116587 | 12. Okt. 1977 | 26. Sept. 1978 | Caterpillar Tractor Co. | Load plus differential pressure compensator pump control assembly |
| US4199942 | 28. Sept. 1978 | 29. Apr. 1980 | Eaton Corporation | Load sensing control for hydraulic system |
| US4479349 | 19. Nov. 1981 | 30. Okt. 1984 | General Signal Corporation | Hydraulic control system |
| US5029067 | 22. Nov. 1988 | 2. Juli 1991 | Kabushiki Kaisha Komatsu Seisakusho | Operation control device |
| US7036625 | 8. Nov. 2002 | 2. Mai 2006 | NMHG Oregon, Inc. | Integrated hydraulic control system |
| US7699135 | 28. Febr. 2006 | 20. Apr. 2010 | NMHG Oregon, LLC | Integrated hydraulic control system |