The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 23, 2009
Filed:
Jun. 17, 2004
Hung Y. Cheng, Hong Kong, CN;
Ho P. Cheng, Hong Kong, CN;
Hung Y. Cheng, Hong Kong, CN;
Ho P. Cheng, Hong Kong, CN;
World Wide Stationery Mfg. Co., Ltd., Kwai Chung, New Territory, HK;
Abstract
A ring binder mechanism that retains loose-leaf pages and has ring members that readily lock together, preventing accidental loss of pages. The mechanism comprises a housing that supports two hinge plates for loose pivoting motion, bringing the ring members to either an open position or a closed position. The mechanism further comprises a control structure, which includes an actuating lever pivotally mounted on the housing. The actuating lever moves a travel bar and its locking elements for controlling the pivoting motion of the hinge plates. When the ring members are closed, the locking elements block the hinge plates from pivoting to open the ring members. In addition, a spring is attached to the travel bar for automatically biasing the travel bar and locking elements to the locked position when the ring members close.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile