Internal-combustion engines – Poppet valve operating mechanism – Rocker
Patent
1999-03-31
2000-11-21
Lo, Weilun
Internal-combustion engines
Poppet valve operating mechanism
Rocker
123 9055, F01L 124, F01L 118
Patent
active
061487805
ABSTRACT:
A hydraulic lash adjuster for disposition between a rocker arm and a valve stem of an internal combustion engine comprises a body having an axially extending neck depending from a lower end thereof. An enlarged head portion extends from the terminal end of the neck and has a semispherical lower surface. A foot assembly includes a disk shaped foot with an upper surface, a lower surface and a cylindrical sidewall defining an outer perimeter. The upper surface has a socket configured to receive the enlarged head. The foot assembly further includes an inverted cup shaped retainer having a cylindrical wall and radial leaves extending inwardly from the upper end of the cylindrical wall, defining a central opening. The axially extending neck extends through the central opening and the opening has a diameter smaller than the enlarged head. The cylindrical wall of the retainer is parallel to the cylindrical sidewall of the foot and is sized to define a parallel frictional force therebetween sufficient to maintain engagement of the foot and retainer. The retainer operates to prevent disassembly of the body and the foot assembly.
REFERENCES:
patent: 4708103 (1987-11-01), Speil
patent: 4856468 (1989-08-01), Speil et al.
patent: 5632237 (1997-05-01), Cornell et al.
patent: 5680838 (1997-10-01), See et al.
patent: 5706771 (1998-01-01), Van Heyningen et al.
patent: 5890463 (1999-04-01), Speil
O'Neill Daniel Patrick
Philo Charles Michael
Stone Albert C.
Vukovich William Paul
Delphi Technologies Inc.
Lo Weilun
VanOphem John A.
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