摘要:
A briefcase includes at least one combination lock. The combination lock includes a group of at least three tumbler rings. Each tumbler ring is operable to rotate and to settle at one of multiple predetermined positions. Each tumbler ring has multiple labels thereon and each of the multiple labels corresponds to one of the multiple predetermined positions. In the combination lock, each tumbler ring has thereon a wild-card position-label and multiple alphabetical-letter position-labels. Each of the multiple alphabetical-letter position-labels is a single alphabetical-letter. The wild-card position-label is configured for representing any alphabetical-letters.
摘要:
Electrolyte additives are described that enhance cycling stability of electrolytes and lithium composite electrodes that prolong cycling lifetimes and improve electrochemical performance of lithium ion batteries. The electrolyte additives minimize voltage fading and capacity fading observed in these batteries by reducing accumulation of passivation films on the electrode surface.
摘要:
A digital toy kit includes a picture book and a digital printing toy. At least one of the pages on the picture book includes one or more pictures and words. The digital printing toy includes a frame member that has a cavity, an ink jet printing head that has one or more nozzles, a memory storing a plurality of objects, a display area, a selection button operative to select an object, and a printing control circuit. The ink jet printing head can be activated to move inside the cavity of the frame member when it is pressed against a chosen page on the picture book. The printing control circuit controls the nozzles on ink jet printing head to project an ink pattern on the chosen page on the picture book when the ink jet printing head moves inside the cavity of the frame member.