Abstract: The present invention relates generally to a method and apparatus capable of transmitting/receiving a message between persons carrying devices of the same kind, together with a desired reproduction time of the message, when the devices are connected to or come close to each other. The message exchanging method according to the present invention comprises the steps of storing a message and its desired reproduction time; checking whether an outer device is the device of the same kind based on a signal from the outer device; transmitting the message and its reproduction time to the outer device according to the check result; and reproducing the message in the outer device at the reserved time for reproduction of the message. According to the present invention, it is possible to let persons who carry portable device of the same kind for exchanging private messages listen to the messages at the desired time, which is set by the person at the transmission side.

Abstract: A lock construction that minimizes the friction coefficient between the slide pin and the slide pin hole through the design of an arc-shaped indentation formed on each interior wall of the slide pin holes, which receives the rectangular slide pin. The lock construction includes an outer fixed body and an inner rolling body, a hooking recess formed in an inner peripheral surface portion, a receiving recess formed in an outer peripheral surface portion of the inner rolling body, wherein a slide bar having a linearly formed inner side is elastically provided in the locking construction, wherein about five slide pin holes of rectangular shape are formed perpendicular to the receiving recess, wherein an arc-shaped indentation is formed on each interior wall of the slide pin holes.

Abstract: The present invention relates to a structure designed to fix a bulb body in a rear combination lamp housing. A rectangular opening 3 is formed in the lamp housing and two catching grooves are formed on one side of the opening. A catching plate provided with a catching slot 7 at one end is formed in the rear of a bulb body and a tension clip with catching jaws formed perpendicular to the catching plate is integrated with the other end of the catching plate. With the catching slot 7 caught at one end of the opening and with the jaws elastically caught in the catching grooves, the bulb body is fixed in the housing. When the arms of the tension clip are compressed in a narrowed manner, the bulb body is separated from the housing.