Patent ID: 11908619
Assignee: nan
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H  F | IPC H

Claim 2:
3. The electromagnetic device according to claim 2, wherein:
an internal through channel (27) is collectively formed by:
the through axial hole of the upper hollow rod (25),
the through axial hole of the lower hollow rod (26), and
an inner space formed by parts of cavities of the upper hollow cylinder, the middle hollow cylinder and the lower hollow cylinder enclosed between the upper rod (25) and the lower rod (26);

said two rotatable spacers (4) further consist of a first rotatable spacer (4) and a second rotatable spacer (4);
said hermetic electrical connector (8) is built into a bottom of the first rotatable spacer (4); and
said radiating antenna (5) further includes a first end (5a) passing through the channel (27) of the first spacer (4) and a second end (5b) fixed to the cover (23).