Valve guide for rocker arm assembly

Details Valve guide for rocker arm assembly Valve guide for rocker arm assembly

2005-05-10

2005-05-10

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Rocker

C123S090160, C123S090450, C074S569000

Reexamination Certificate

active

06889644

ABSTRACT:
A rocker arm assembly (55) for a valve control system in an internal combustion engine including a cylinder head (11), and a poppet valve (15). The valve control system comprises an HLA (41) having a ball plunger portion (39). The assembly (55) comprises a rocker arm (57) including axially spaced apart side walls (59,61) and a portion (63) for engagement with the ball plunger (39). The rocker arm assembly (55) further comprises a cam follower (29) disposed about a mounting shaft (31) extending into shaft openings (65) defined by the side walls (59,61), and a pin member (67) defining a valve pad for engagement with a stem tip portion (17), the pin member extending into pin openings (71) defined by the side walls. The assembly (55) includes a clip member (75) including spaced apart clip side walls (77,79) disposed on the outside of the side walls of the rocker arm (57). A connection portion (81) interconnects the clip side walls to restrain axial movement of the mounting shaft (31) and of the pin member (67). The clip side walls (77,79) include retention portions (85,87) engaging the adjacent side walls (59,61) of the rocker arm and extending therebetween and include terminal portions (91) adjacent the pin member (67) to limit rotation of the pin member about its axis, relative to said rocker arm (57).

REFERENCES:
patent: 4934323 (1990-06-01), Grinsteiner
patent: 5655490 (1997-08-01), Nagano et al.
patent: 6138626 (2000-10-01), Speil
patent: 6491012 (2002-12-01), Pryba et al.

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