| 摘要 |
The invention contemplates an improved refill cartridge and insert construction for use in lipstick containers involving outer decorative casings, the insert being permanently assembled into the bore of the base of the outer decorative casing. The particular feature of the invention resides in locking or detent action between a part of the base end of the refill cartridge and an inwardly projecting insert part which also has keyed rotary driving engagement with the base end of the cartridge. The nature of the action is such as to permit smooth insertion and removal of the cartridge with minimum transient distortion of the outer decorative casing. No residual stress is applied to the casing once the insertion or the removal of the cartridge has been completed.
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