Discharge valve with handle lock
US4890814A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1988 |
| Grant date | Jan 2, 1990 |
| Priority date | — |
| Expiry date | Sep 26, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K51/00
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A portable tank for storage and transport of liquids has a bottom discharge opening closed by a discharge valve connected to the bottom of the tank. The discharge valve has a hollow valve body, a movable valve disk positioned within the body, and a handle connected to the valve disk extending through an opening in the valve body. The handle is rotatable to open and close the valve. A stationary locking plate is secured to the valve body and a locking member is movably mounted on the valve handle. The locking member is movable to and from a position in which the locking member is in an interference relationship with the locking plate locking the handle and, correspondingly, the valve disk in a predetermined position when the locking member is in the interference position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.