KUSC positive return valve action
US9086171B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Nov 15, 2012 |
| Grant date | Jul 21, 2015 |
| Priority date | — |
| Expiry date | Feb 4, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/528
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A kinetically unyielding, statically compliant (KUSC) positive return valve action. In one embodiment, a guide is pivotally mounted and rotationally abuts a limiting bench. A pin mounted slidably on the guide is linked to a poppet valve, a driver positioning the pin along the guide. With the valve seated and the driver overtraveled a deflection opens up between the guide and the limiting bench that resolves the overtravel, which deflection is opposed by a forcing spring. As the valve is initially lifted, valve-lift kinetic force is buttressed against the guide mount and the limiting bench, neither of which yields. With increasing lift the pin position passes the guide mount axis to be cantilevered on the guide at maximal valve lift against valve-return kinetic force: this also is unyieldingly buttressed. The action is adjusted by positioning the limiting bench either manually or by hydraulic lash adjuster.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.