초록 ▼

A miniature flashlight comprises a barrel, a tail cap, a head assembly, and means for holding a miniature lamp bulb. The means for holding lamp bulb comprises an insulated receptacle disposed external to the end of the barrel to which the head assembly is engaged, a second insulated receptacle dispo

A miniature flashlight comprises a barrel, a tail cap, a head assembly, and means for holding a miniature lamp bulb. The means for holding lamp bulb comprises an insulated receptacle disposed external to the end of the barrel to which the head assembly is engaged, a second insulated receptacle disposed within the barrel and matingly engaging with the first insulated receptacle so as to enable the first and second insulated receptacles to translate axially through a distance limited by a flange formed on the first insulated receptacle and an annular lip formed inwardly at the end of the barrel, and a pair of conductor members mounted in the second insulated receptacle such that one of the conductors serves to couple the center electrode of a dry cell battery to a first pin of the lamp bulb and the other conductor member serves to electrically couple the second pin of the lamp bulb to the lip formed on the barrel. A spring is disposed between the tail cap and the batteries within the barrel to urge the batteries into contact with the center conductor on the second insulated receptacle, thereby urging the second and the first insulated receptacles in the same direction until the second insulated receptacle contacts the lip on the end of the barrel whereat the second conductor member is in contact with the lip. The electrical circuit is thus closed by use of the barrel, the tail cap, and the spring to couple the second pin of the lamp to the case terminal of the battery.

대표청구항 ▼

A miniature flashlight comprising: a lamp bulb; a barrel for retaining a battery source of power therein, said barrel being in electrical communication with the battery source of power when said lamp bulb is energized; means for retaining said lamp bulb adjacent one end of said barrel; a head assemb

A miniature flashlight comprising: a lamp bulb; a barrel for retaining a battery source of power therein, said barrel being in electrical communication with the battery source of power when said lamp bulb is energized; means for retaining said lamp bulb adjacent one end of said barrel; a head assembly including a light transmitting lens and a beam forming reflector, said assembly being controllably translatable along said barrel in response to rotation thereof relative to said barrel; and switch means disposed adjacent said one end of said barrel for opening an electrical contact between said lamp bulb and said barrel to de-energize said lamp bulb in response to relative movement of said head assembly in an axial direction toward said barrel, at least a portion of said switch means being axially movable with respect to said barrel such that axial movement of said head assembly towards said barrel in response to relative rotation thereof causes axial movement of said portion of said switch means to open said electrical contact and wherein rotational movement of said head assembly with respect to said barrel additionally varies the relative positional relationship between the reflector and the lamp bulb thereby providing an adjustable focus of light emission from the flashlight lens when the lamp bulb is energized.