Multi-stage pedal valve structure
US6722623B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Jul 5, 2002 |
| Grant date | Apr 20, 2004 |
| Priority date | — |
| Expiry date | Jul 5, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K5/0442
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A multi-stage pedal valve structure relates to a flow regulator on the valve opening located between the two compartments inside the body of the one-way pedal valve. The device includes a valve jacket, a piston rod, a graduating disc and a spring, while the valve jacket possesses a concave channel guide and a one-way tilting wedge. The graduating disc is a cylindrical unit on the opposite of the valve jacket. The piston rod comes in the form of a trapezoid, of which the outer section increases from top to bottom, and the middle section of the piston rod features circular channels, of which the end and the lower section come in increasing pitches and the perimeter of the lower section comes with slant blocks in reduced numbers and in even numbers in proportion to the channels on the valve jacket. The device keeps water from flowing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.