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:
Nov. 04, 2003
Filed:
Feb. 21, 2002
Kevin Lu, Hsin-Tien, TW;
Shin Jiuh Corp., Hsin-Tien, TW;
Abstract
An improved bridge structure for keyboards consists of a first linkage element and a second linkage element pivotally engaging with each other. The first linkage element and second linkage element have respectively a pivotal trough which have respectively a pivotal trough slant surface section on the bottom section, and an axle which have respectively an axle slant surface section on the bottom section. The two slant surface sections intersect to form a fulcrum. The fulcrums remain stationary at the center to serve as the circle center of movements such that moving tolerances are unchanged when the key cap is depressed downwards. And the movements are performed based on the stationary center points which support and transfer forces in sideward directions to reduce sideward inclination and shaking.