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:
May. 29, 2001
Filed:
Jun. 02, 2000
Akio Nishijima, Fukushima-ken, JP;
Hideki Ito, Fukushima-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
In the keyboard assembly, post-like support members are formed sideways of each of the key top housings corresponding to key tops to which torsion bars are attached respectively, out of plural key top housings, the support members being erected integrally from a housing plate and having a hollow structure, through holes are formed respectively in base end portions of the support members so as to extend through the housing plate, and a sheet member is disposed on a back side of the housing plate, the sheet member comprising waterproofing protuberances for closing the through holes in a waterproof manner, spring portions for pushing back the key tops upward, and a sheet body portion which renders the spring portions and the waterproofing protuberances integral with each other.