Exhaust gas brake system
US4773440A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1986 |
| Grant date | Sep 27, 1988 |
| Priority date | — |
| Expiry date | Dec 22, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/5762
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to an exhaust gas brake system of slide type for an improvement in construction that a coupler cover member has a space chamber defined in the inner circumference of a central opening thereof through which a piston rod of a pneumatic actuator extends, the space chamber communicating to the atmosphere, through which chamber exhaust gas from an engine liable to flow to the side of the actuator is guided to be discharged to the atmosphere. Also, the invention relates to such an exhaust gas brake construction that there are provided first ring means and second ring means disposed in an alternately stacked relationship one upon the other within and along the longitudinal axis of the piston rod passing opening, the first ring means having a relatively small inner circumference clearance and a relatively large outer circumference clearance, the second ring means having a relatively large inner circumference clearance and a relatively small outer circumference clearance, whereby exhaust gas is prevented from entering into the actuator and carbon is prevented from depositing onto the piston rod.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.