Lash adjuster for valve actuator

Details Lash adjuster for valve actuator Lash adjuster for valve actuator

2006-03-21

2006-03-21

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090540, C123S090520, C123S090430

Reexamination Certificate

active

07013855

ABSTRACT:
A lash adjuster in a valve actuator includes a lifter body having an end plate having its top surface in contact with a cam and formed with a threaded hole in its bottom surface. An adjuster screw is inserted in the threaded hole with its external thread in engagement with the internal thread of the threaded hole. An elastic member is mounted in the threaded hole over the adjuster screw to bias the adjuster screw axially downward. Both of the threads have a sawtooth-shaped section with its pressure flank having a greater flank angle than its clearance flank. One of the pressure flanks is formed with a satin-finished rugged surface which is covered by a hard film which is non-reactive with a low-friction oil. With this arrangement, even after the threads have become worn, the friction coefficient between the thread surfaces is kept substantially constant.

REFERENCES:
patent: 4981117 (1991-01-01), McRobert et al.
patent: 6109228 (2000-08-01), Yamamoto et al.
patent: 3-501758 (1991-04-01), None
patent: 11-324617 (1999-11-01), None
patent: 11-324618 (1999-11-01), None
patent: 2003-013710 (2003-01-01), None
patent: 2003-193811 (2003-07-01), None
patent: 89/05898 (1989-06-01), None

Affiliated with

Also associated with

Rating

Lash adjuster for valve actuator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Lash adjuster for valve actuator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lash adjuster for valve actuator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3606536