Patent ID: 6764239
Filing Date: 2004-07-20
Classification: A45D,A46B,B43K

Abstract:
A hand-held multipurpose casing, comprising a front barrel having a front opening; a middle barrel fixedly fitted into a rear end portion of said front barrel at its front end portion; a rear barrel movably fitted over a rear end portion of said middle barrel at its front end portion so as to be axially movable on the middle barrel; a functional tipped device housed within said casing so as to be axially movable within the casing in response to an axial movement of the rear barrel, thus being extended or retracted from or into the front opening of said front barrel; and an actuating unit used for axially moving the functional tipped device in response to the axial movement of the rear barrel, thus extending or retracting the functional tipped device from or into the front opening of said front barrel, wherein said actuating unit comprises:a rotatable rod having both an internal spiral thread at its front end portion and an external spiral thread at its rear end portion, with the spiral directions of the internal and external spiral threads being opposite to each other; a thrust rod holding said functional tipped device at its front end and having an external spiral thread at its rear end portion, and movably engaging with the rotatable rod through a screw-type engagement between the external spiral thread of the thrust rod and the internal spiral thread of the rotatable rod; and a cap rod having an internal spiral thread at its front end portion, and movably engaging with the rotatable rod through a screw-type engagement between the internal spiral thread of the cap rod and the external spiral thread of the rotatable rod, said cap rod also having both an external thread on its external surface at a rear end portion and a guide groove axially formed along the external surface of said cap rod.