Apparatus and methods for purging air from a fluid conveying tube
US8770217B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2008 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Jan 25, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/309
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for purging air from a fluid conveying tube includes a housing member comprising an inner bore having an inlet and an outlet (115); and a vented piston member slidably disposed within the inner bore, the vented piston member comprising a filter element and at least one air vent. The filter element is configured to allow air to pass through the vented piston member to the at least one air vent and to prevent fluid from passing through the vented piston member to the at least one air vent. A method of purging accumulated air from a fluid conveying tube includes providing a vented piston member slidably disposed within a housing member; displacing air from the fluid conveying tube through a filter element disposed within the piston member using pressurized fluid; and displacing the piston member with the pressurized fluid; wherein the displacement of the piston member exposes an outlet for the pressurized fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.