Invention Application
- Patent Title: Lever arch binder mechanism with complementary ring tips
- Patent Title (中): 杠杆弓夹具机构与互补环尖
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Application No.: US10901300Application Date: 2004-07-29
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Publication No.: US20050260029A1Publication Date: 2005-11-24
- Inventor: Yiu Wong
- Applicant: Yiu Wong
- Applicant Address: HK Kowloon
- Assignee: Hong Kong Stationery Manufacturing Co., Ltd.
- Current Assignee: Hong Kong Stationery Manufacturing Co., Ltd.
- Current Assignee Address: HK Kowloon
- Main IPC: B42F13/22
- IPC: B42F13/22 ; B42F13/00
Abstract:
A ring binder mechanism has D-shaped rings formed by a straight, stationary part, and a movable mating part having an arcuate shape. A recess is formed in the tip of the movable part, and a protrusion at the tip of the stationary part seats in the recess. A lateral window in the recessed tip, intersecting the recess, enables the protrusion to seat smoothly in the recessed tip notwithstanding the fact that the relative motion between the approaching tips has a large lateral component.
Public/Granted literature
- US07293932B2 Lever arch binder mechanism with complementary ring tips Public/Granted day:2007-11-13
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