|
| US4147478 | 22 Sep 1977 | 3 Abr 1979 | Graco Inc. | Secondary pump feed apparatus |
| US4231721 | 12 Oct 1978 | 4 Nov 1980 | General Motors Corporation | Diaphragm pump |
| US4314797 | 28 Mar 1979 | 9 Feb 1982 | J. Eberspacher | Metering piston pump |
| US4381182 | 9 Jul 1980 | 26 Abr 1983 | Lucas Industries Limited | Fuel injection pump |
| US4496292 | 7 Dic 1981 | 29 Ene 1985 | Webasto-Werk W. Baier GmbH & Co. | Electromagnetic fuel delivery and metering pump |
| US4533301 | 17 Sep 1984 | 6 Ago 1985 | | Pump |
| US4561829 | 2 Feb 1984 | 31 Dic 1985 | Hitachi, Ltd. | Rotary compressor with tapered valve ports for lubricating pump |
| US4594058 | 26 Nov 1985 | 10 Jun 1986 | The Johns Hopkins University | Single valve diaphragm pump with decreased sensitivity to ambient conditions |
| US4787832 | 17 Feb 1987 | 29 Nov 1988 | Sanshin Industries Co., Ltd. | Automatic air vent device for fluid pump of internal combustion engine |
| US5490444 | 3 Oct 1994 | 13 Feb 1996 | Dynex/Rivett, Inc. | Piston pump with improved hold-down mechanism |
| US5647266 | 7 Dic 1995 | 15 Jul 1997 | Dynex/Rivett, Inc. | Hold-down mechanism for hydraulic pump |
| US6702557 | 7 May 2002 | 9 Mar 2004 | Samsung Gwangju Electronics Co., Ltd. | Valve assembly prohibiting re-expansion of residual fluid |