Environmentally friendly lipstick case
View Patent ↗An environmentally friendly lipstick case formed of PET includes a cap including an internal annular groove on a bottom; a rotation tube including internal spiral guide grooves; an ascending and descending tube including two opposite guide pins on an outer surface, and longitudinal ribs on an inner surface; a support tube including two opposite longitudinal tunnels on a surface, each longitudinal tunnel having an upper horizontal end and a lower horizontal end oriented in a direction opposite to that of the upper horizontal end, and an annular toothed member on a bottom of an inner surface; and a lower exterior casing including an annular shoulder on an outer surface of an upper portion, projections between the annular shoulder and an open top, and a protrusion on a blind bottom disposed in the toothed member. The guide pins are moveably disposed through the longitudinal tunnels into the guide grooves.
1. An environmentally friendly lipstick case, comprising:
a cap formed of polyethylene terephthalate (PET) and including an annular groove on an open bottom of an inner surface;
a rotation tube formed of PET, the rotation tube being hollow and including a plurality of spiral guide grooves on an inner surface;
an ascending and descending tube formed of PET and including two opposite guide pins on an outer surface, and a plurality of parallel longitudinal ribs on an inner surface;
a support tube formed of PET, the support tube being hollow and including two opposite longitudinal tunnels on a surface, each of the longitudinal tunnels having an upper horizontal end and a lower horizontal end oriented in a direction opposite to that of the upper horizontal end, and an annular toothed member on a bottom of an inner surface, and the support tube further comprising a longitudinal cut through a top edge and communicating with one of the upper horizontal ends, the longitudinal cut having a width less than a diameter of the guide pin; and
a lower exterior casing formed of PET, the lower exterior casing being a receptacle and including an annular shoulder on an outer surface of an upper portion, a plurality of projections between the annular shoulder and an open top, and a protrusion on a blind bottom configured to dispose in the toothed member;
wherein the rotation tube is put on the support tube;
wherein the ascending and descending tube is disposed in the support tube;
wherein the guide pins are moveably disposed through the longitudinal tunnels into the spiral guide grooves so that the guide pins are configured to anchor in the upper horizontal ends or the lower horizontal ends at an end of the movement;
wherein the rotation tube is partially disposed in the lower exterior casing;
wherein both the ascending and descending tube and the support tube are disposed in the lower exterior casing;
wherein the protrusion is secured to the toothed member; and
wherein the cap is releasably secured to the lower exterior casing by resting upon the annular shoulder and snapping the annular groove onto the projections.
2. The environmentally friendly lipstick case of claim 1 , wherein the rotation tube further comprises at least one annular trough on the inner surface proximate a bottom edge, and the support tube further comprises at least one annular ridge configured to dispose in the annular trough when the rotation tube is put on the support tube.
3. The environmentally friendly lipstick case of claim 1 , further comprising a lipstick fastened by the parallel longitudinal ribs of the ascending and descending tube.
4. The environmentally friendly lipstick case of claim 1 , wherein the rotation tube further comprises a curved top edge.