the surfaces but also along overlapping surfaces application_number US 76421901 A description referring to fig1 3 and 4 a 4 b a crt socket 1 has an injection molded insulating housing 2 of synthetic resin a plurality of signal contacts 6 and a pair of focus contacts 7 are attached to the insulating housing 2 the insulating housing 2 includes a ring shaped portion 3 a base portion 4 and a cover portion 5 a base insertion hole 8 is formed at a center of the ring shaped portion 3 the base portion 4 is arranged backward leftward in fig4 from the ring shaped portion 3 and is integrally continuously connected to the ring shaped portion 3 a front face side of the base portion 4 is covered with the cover portion 5 the base insertion hole 8 is cylindrical with an inside diameter slightly larger than the outside diameter of a base 100 a of the cathode ray tube so as to permit insertion of the base 100 a from a front face side of the ring shaped portion 3 in the ring shaped portion 3 a signal contact storing chamber 9 is concavely arranged from a rear face in each of nine positions on the same circular circumference outside the base insertion hole 8 each of nine signal contacts 6 is attached and stored in signal contact storing chamber 9 from the rear face side as shown in fig7 each signal contact 6 is formed by bending a band shaped elongated conductive metallic plate one end of a supporting portion 6 b is bent at an acute angle to form a signal contact portion 6 a the other end of the supporting portion 6 b is double bent.