TricorBraun has received a patent for a locking configuration that enables two bottles to be slid together and locked. The interlocking engagement is achieved when a pair of identically formed bottles presents opposing dovetails that fasten into themselves.

“The design provides remarkable marketing support for two liquid products that a manufacturer wants to be used in combination. This configuration is a logical choice for personal care products such as shampoo and conditioner or hand lotion and sanitizer,” according to Craig Sawicki, executive vice president, TricorBraun.