Abstract: An air-tight container is disclosed. The air-tight container comprises a body comprising a receiving space; a lid comprising an inlaying portion for removably fitting onto the body; and a sealing assembly. The sealing assembly comprises a sealing pad at a bottom portion thereof, wherein the bottom portion is surrounded by a resilient element and the resilient element is positioned between a top surface of the lid and a bottom side of the sealing assembly for moving the sealing assembly up and down in a vertical direction within the air-releasing passage of the lid under an external pressure applied thereto substantially unseal or seal the interior of the air-tight container.

Abstract: A coaxial cable connector is disclosed to include a first connecting member threaded onto a matching coaxial cable connector (jack), a second connecting member sleeved onto a coaxial cable, a locating barrel mounted on the outer end of a tube of conducting material of the coaxial cable that is turned backwards, and a center holding down member mounted inside the first connecting member to separate a central conductor of the coaxial cable from the tube of conducting material and forced by the first connecting member to squeeze the tube of conducting material in a stepped center through hole of the second connecting member.

Abstract: A signal adaptor is described. The signal adaptor comprises a fastening member, comprising a buckling portion and a tube extending form from a rear side of said securing member; a nut, for fitting the fastening member; a receiving member having a buckling set formed on an outer contacting portion, for fitting onto the fastening member to tightly fasten the receiving member to the securing portion of the fastening member; and a securing member having a buckling set at an inner contacting portion, wherein when securing member is fitted around the receiving member, said buckling set of the contacting portion of the securing member buckles into the buckling set of the contacting portion of the receiving member for positioning said securing member onto the receiving member.

Abstract: A structure of a signal adapter is disclosed. The signal adapter of the present invention comprises an adapter and a fitting head. The adapter comprises a receiving portion, and a space is formed within the receiving portion. The space comprises an indented circular buckling groove. A flat face is formed close to the flange of the circular buckling groove and a guiding portion is formed on the other side thereof. The fitting head comprises a fitting plate, which has a guiding portion, and a flat face is formed at the bottom flange of the fitting plate. A tube is positioned in the center of the fitting plate, wherein the tube is for fitting a fitting element. Clamping portions are integrally formed on the two sides of the fitting element. The clamping portions comprise a plurality of hollow resilient elements that become gradually narrower towards the center.

Abstract: A structure of a signal adapter is disclosed. The signal adapter of the present invention comprises an adapter and a fitting head. The adapter comprises a receiving portion, and a space is formed within the receiving portion. The space comprises an indented circular buckling groove. A flat face is formed close to the flange of the circular buckling groove and a guiding portion is formed on the other side thereof. The fitting head comprises a fitting plate, which has a guiding portion, and a flat face is formed at the bottom flange of the fitting plate. A tube is positioned in the center of the fitting plate, wherein the tube is for fitting a fitting element. Clamping portions are integrally formed on the two sides of the fitting element. The clamping portions comprise a plurality of hollow resilient elements that become gradually narrower towards the center.