Supported pushrod for internal combustion engines

Details Supported pushrod for internal combustion engines Supported pushrod for internal combustion engines

1994-12-13

1996-02-20

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

Rod

123 9035, F01L 114

Patent

active

054920850

ABSTRACT:
A lightweight pushrod assembly for internal combustion engines, such as motorcycle racing engines, includes a top pushrod and a bottom pushrod which are joined by a pushrod tappet. The pushrod tappet is mounted for reciprocating movement in a pushrod stanchion, and the stanchion is secured to the engine such that support is provided to the pushrod assembly at a position near the middle of the entire pushrod assembly. The pushrod stanchion also provides part of a pushrod housing assembly, with additional upper and lower housings provided to enclose the upper and lower pushrods. The lower end of the top pushrod and the upper end of the bottom pushrod preferably engage the tappet in a ball and socket joint relation to allow limited radial movement of the top and/or bottom pushrods to minimize the stresses on the pushrods. The supported pushrod assembly may be provided in kits for installation of the pushrod assemblies on existing engines.

REFERENCES:
patent: 1729849 (1929-10-01), Willgoos
patent: 1823419 (1931-09-01), Almen
patent: 2735313 (1956-02-01), Dickson
patent: 3048156 (1962-08-01), Slooten
patent: 3195527 (1965-07-01), Eaton
patent: 3301241 (1967-01-01), Iskenderian
patent: 4589384 (1986-05-01), Ott
patent: 5095862 (1992-03-01), Murphy
patent: 5154145 (1992-10-01), Blane

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