Flexible concrete hose shut-off valve
US10151395B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 14, 2017 |
| Grant date | Dec 11, 2018 |
| Priority date | — |
| Expiry date | Sep 14, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/3631
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A concrete flow leakage-preventing shut-off valve includes an outer flexible casing configured to be disposed around a concrete delivery hose. A flexible inflatable bladder is disposed within the casing and defines a gas chamber therein. A gas intake/exhaust device extends through the casing and into the gas chamber such that pressurized gas introduced and exhausted from the gas chamber enables movement of the bladder to define closed and open concrete flow conditions of concrete relative to an outlet end of the hose. A clamping arrangement secures opposite ends of the casing and the bladder in radially and axially spaced apart relationship, and is configured to maintain a surrounding relationship of the casing and bladder with respect to the hose.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.