Invention Grant
- Patent Title: Adjustable ring and ring binders using the same
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Application No.: US16792289Application Date: 2020-02-16
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Publication No.: US10759216B1Publication Date: 2020-09-01
- Inventor: Stanley YiFei Liu , Wesley YiMing Liu , Zhiqiang Liu , Genshen Liu
- Applicant: Stanley YiFei Liu , Wesley YiMing Liu , Zhiqiang Liu , Genshen Liu
- Main IPC: B42F13/30
- IPC: B42F13/30 ; B42F13/26 ; B42F13/32 ; B42F13/34
Abstract:
An adjustable ring having a curved section and two telescoping arms. Each telescoping arm comprises two or more tubes that move relative to each other in a concentric manner between a collapsed state and an extended state to accommodate various amounts of sheet or sheet-like materials. A ring binder can be constructed using one or more of the adjustable rings.
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