Flow control apparatus
US4240609A · kind A · utility
15Cited by
14References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1978 |
| Grant date | Dec 23, 1980 |
| Priority date | — |
| Expiry date | Aug 7, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K39/022
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Flow control apparatus is disclosed in which a closure element is reciprocated between flow controlling positions by means of a stem which is substantially counterbalanced with respect to forces on the stem due to the pressure of the fluid being controlled as well as ambient pressure conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.