|
| US4054109 | 31. März 1976 | 18. Okt. 1977 | General Motors Corporation | Engine with variable valve overlap |
| US5007388 | 23. Apr. 1990 | 16. Apr. 1991 | Briggs & Stratton Corporation | Hydraulic valve lifter |
| US5123397 | 10. Mai 1990 | 23. Juni 1992 | North American Philips Corporation | Vehicle management computer |
| US5203830 | 1. Juni 1992 | 20. Apr. 1993 | Caterpillar Inc. | Method and apparatus to reduce engine combustion noise utilizing unit valve actuation |
| US5553512 | 14. Sept. 1993 | 10. Sept. 1996 | NTN Corporation | Roller tappet having yoke member with flat top plate |
| US5588413 | 14. März 1995 | 31. Dez. 1996 | Caterpillar Inc. | Engine assembly with leaf spring cam follower |