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:
Mar. 16, 2010
Filed:
Oct. 30, 2006
Applicant:
Van S. Chandler, Georgetown, TX (US);
Inventor:
Van S. Chandler, Georgetown, TX (US);
Assignee:
Magnekey, Austin, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G10C 3/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
An electronic keyboard that includes a plurality of keys including a first key. The keyboard further includes a key support supporting the first key for movement between a rest position and a depressed position. The keyboard also includes a first key return spring configured to apply a return force to the first key to bias the first key toward the rest position. In the keyboard, the first key return spring is configured such that the return force has a substantially constant magnitude throughout the movement of the first key between the rest position and the depressed position.