Pushrod guide for an overhead valve engine and method of installing the same
US5415138A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 28, 1994 |
| Grant date | May 16, 1995 |
| Priority date | — |
| Expiry date | Feb 28, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L1/146
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Difficulties with wear and the cost of guide systems for pushrods and overhead valve engines are reduced in an overhead valve internal combustion engine of the type having a block (10) with at least one cylinder (12), a head (26) fitted to the block (10), a valve (32) mounted for reciprocating movement in the head (26) toward and away from the cylinder (12) and a rocker arm (56) rockably mounted on the head (26). The rocker arm (56) abuts the valve (32) oppositely of the cylinder (12) and aligned pushrod cavities (72), (74) are respectively provided in the head (26) and block (10). A reciprocal pushrod (64) is disposed in the cavities (72), (74) and engages the rocker arm (56) oppositely of the valve (32). According to the invention, guides in the form of two spaced pins (78), (80) are disposed in one of the cavities (72) and are laterally spaced a distance about equal to the thickness of the pushrod (64) and are also spaced in the direction of reciprocation (82) of the pushrod (64).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.