|
| US3984904 | 27 Nov 1974 | 12 Oct 1976 | Caterpillar Tractor Co. | Internal retaining tabs for a filled piston |
| US3999468 | 7 Jul 1975 | 28 Dec 1976 | Caterpillar Tractor Co. | Piston for hydraulic translating unit |
| US4519300 | 5 Apr 1982 | 28 May 1985 | Caterpillar Tractor Co. | Filled piston with central oil tube |
| US5490446 | 22 Mar 1994 | 13 Feb 1996 | Caterpillar Inc. | Apparatus and method for a piston assembly |
| US5642654 | 1 Sep 1994 | 1 Jul 1997 | Sundstrand Corporation | Piston and method of manufacturing the same |
| US5683641 | 3 Apr 1995 | 4 Nov 1997 | Xerox Corporation | Process for making composite shafts with selected expansion and shrink rates |
| US5876288 | 21 Jul 1997 | 2 Mar 1999 | Xerox Corporation | Method of making composite shafts |
| US6241619 | 16 Apr 1999 | 5 Jun 2001 | Xerox Corporation | Hollow shafts with gas assist molding |
| US6250206 | 10 Feb 1999 | 26 Jun 2001 | Sauer-Danfoss Inc. | Hydraulic piston filling |
| US6293185 | 28 Feb 2000 | 25 Sep 2001 | Sauer-Danfoss Inc. | Piston for a hydrostatic cylinder block |
| US6314864 | 20 Jul 2000 | 13 Nov 2001 | Sauer-Danfoss Inc. | Closed cavity piston for hydrostatic units |
| US6318241 | 3 Mar 2000 | 20 Nov 2001 | Sauer-Danfoss Inc. | Piston for a hydrostatic cylinder block |
| US6318242 | 26 Oct 1999 | 20 Nov 2001 | Sauer-Danfoss Inc. | Filled hydraulic piston and method of making the same |
| US6338293 | 30 Jun 2000 | 15 Jan 2002 | Sauer-Danfoss Inc. | Reduced oil volume piston assembly for a hydrostatic unit |
| US6431051 | 31 Mar 2000 | 13 Aug 2002 | Sauer-Danfoss Inc. | Closed cavity hydraulic piston and method of making the same |
| US6491206 | 11 Oct 2001 | 10 Dec 2002 | Sauer-Danfoss, Inc. | Method of making closed cavity pistons |
| US6517440 | 16 Apr 1999 | 11 Feb 2003 | Xerox Corporation | Plastic shafts with molded core and external feature |
| US7357067 | 29 Aug 2005 | 15 Apr 2008 | Poclain Hydraulics | Spherical joint of a hydrostatic piston machine |