Vent filter and radio remote unit

US11110381B2 · kind B2 · utility

Assignee

• Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

• Xiaogang Song · Lo Wu, CN
• Pinghua Duan · Nanjing, CN
• Guanghua Pan · Nanjing, CN
• Zhen Yang · Qingdao, CN
• Jinhui Dou · Nanjing, CN
• Zhan Ying · Hefei, CN
• Pengxiao Ge · Nanjing, CN
• Peng Xu · Beijing, CN

Key dates

• Filing date: Apr 16, 2018
• Grant date: Sep 7, 2021
• Expiry date: Feb 25, 2040

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2279/45
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A vent filter and a Radio Remote Unit having the vent filter. The vent filter includes a first member including a first body having a ventilation path extending through the first body, an inner wall constituting a ventilation hole which is communicated with the ventilation path, and an outer wall constituting a gap between the inner wall and the outer wall. The vent filter also includes a second member including a second body and at least one enclosure wall protruding out from the second body, wherein at least one of the at least one enclosure wall is located outside the outer wall and surrounding the outer wall. Both the inner and outer walls have at least one first groove at an end and each of the at least one enclosure wall has at least one second groove at an end.