Jetting devices with control valve-enabled variable air flow and methods of controlling air flow
US10609822B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 11, 2019 |
| Grant date | Mar 31, 2020 |
| Priority date | — |
| Expiry date | Jan 11, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/05
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A jetting device may include a vacuum nozzle configured to direct a gaseous flow of a gaseous fluid in flow communication with a jetting outlet; a vacuum pump configured to draw the gaseous flow into the vacuum nozzle and further towards the vacuum pump via the vacuum nozzle outlet; and an inlet conduit between a vacuum nozzle inlet and the ambient environment, where the inlet conduit includes a control valve configured to control a flow rate of the gaseous flow through the vacuum nozzle outlet based on adjusting a smallest diameter of the inlet conduit between an open diameter and a constricted diameter. The open diameter may be greater than a smallest diameter of the suction hole. The gaseous flow may include a first gaseous flow into the vacuum nozzle via a suction hole and an adjustable second gaseous flow into the vacuum nozzle via the vacuum nozzle inlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.