|
| US3994314 | 8 May 1975 | 30 Nov 1976 | | Servo regulator |
| US3998134 | 8 Nov 1974 | 21 Dec 1976 | | Load responsive fluid control valves |
| US4020867 | 24 Feb 1976 | 3 May 1977 | Nisshin Sangyo Kabushiki Kaisha | Multiple pressure compensated flow control valve device of parallel connection used with fixed displacement pump |
| US4022022 | 26 Apr 1976 | 10 May 1977 | Parker-Hannifin Corporation | Hydraulic system and control valve assembly therefor |
| US4028889 | 5 Oct 1976 | 14 Jun 1977 | | Load responsive fluid control system |
| US4030522 | 18 Apr 1975 | 21 Jun 1977 | Robert Bosch G.m.b.H. | Hydraulic control valve arrangement |
| US4037621 | 26 Nov 1975 | 26 Jul 1977 | | Load responsive control valve with constant leakage device |
| US4051868 | 23 Mar 1976 | 4 Oct 1977 | Danfoss A/S | Control device for a hydraulically operated consumer |
| US4058139 | 27 Jul 1976 | 15 Nov 1977 | | Load responsive fluid control valves |
| US4075842 | 23 Feb 1977 | 28 Feb 1978 | | Load responsive fluid control system |
| US4089346 | 13 Dec 1976 | 16 May 1978 | | Load responsive fluid control valves |
| US4099379 | 5 Feb 1976 | 11 Jul 1978 | | Load responsive fluid control system |
| US4109561 | 26 Nov 1976 | 29 Aug 1978 | Caterpillar Tractor Co. | Control valve arrangement with a preconditioned relief valve and a flow force compensated valve spool |
| US4122865 | 28 Feb 1977 | 31 Oct 1978 | | Load responsive fluid control valve |
| US4153075 | 26 Nov 1975 | 8 May 1979 | | Load responsive control valve |
| US4159724 | 10 Apr 1978 | 3 Jul 1979 | | Load responsive control valve |
| US4180098 | 12 May 1978 | 25 Dec 1979 | | Load responsive fluid control valve |
| US4211254 | 30 Oct 1978 | 8 Jul 1980 | Modular Controls Corporation | Normally closed pressure compensated flow control valve |
| US4364304 | 26 Oct 1981 | 21 Dec 1982 | Danfoss A/S | Arrangement for influencing the operating quantity of a servomotor |
| US4665801 | 21 Jul 1986 | 19 May 1987 | Caterpillar Inc. | Compensated fluid flow control valve |
| US4688470 | 21 Jul 1986 | 25 Aug 1987 | Caterpillar Inc. | Compensated fluid flow control valve |
| US4768420 | 3 Apr 1987 | 6 Sep 1988 | | Control arrangement for controlling a hydraulic drive for driving a piston pump |
| US4798126 | 23 Mar 1987 | 17 Jan 1989 | Caterpillar Inc. | Load responsive system using load responsive pump control of a bypass type |
| US5487403 | 28 Nov 1994 | 30 Jan 1996 | | Variable discharge pump with low unload to secondary |
| US5515879 | 28 Nov 1994 | 14 May 1996 | | Load sensed multi-purpose pressure control valve |
| US5794437 | 18 Sep 1996 | 18 Aug 1998 | | Regenerative adaptive fluid motor control |
| US5794438 | 19 Sep 1996 | 18 Aug 1998 | | Adaptive fluid motor feedback control |
| US5794439 | 18 Sep 1996 | 18 Aug 1998 | | Regenerative adaptive fluid control |
| US5794440 | 16 Sep 1996 | 18 Aug 1998 | | Adaptive fluid control |
| US5794441 | 19 Sep 1996 | 18 Aug 1998 | | Adaptive fluid feedback control |
| US5794442 | 2 Oct 1996 | 18 Aug 1998 | | Adaptive fluid motor control |
| USRE30828 | 19 Jul 1979 | 22 Dec 1981 | | Load responsive valve with constant leakage device |
