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:
Jul. 09, 1996
Filed:
Nov. 10, 1993
Yoshiki Hoshino, Aichi-Ken, JP;
Hoshino Gakki Co., Ltd., , JP;
Abstract
A sound comparison device for a drum that has a body that includes a bottom with a periphery. The periphery of the bottom of the body is in contact with the surface of a drum head. A drum head tension measurement element includes a tip which protrudes from the bottom of the body. A spring biases the tip to press against and sink into the drum head to a distance determined by the tension on the drum head. A display is connected with the measurement element for causing the display to display a numerical value Y which corresponds to distance X of the protrusion of the measurement element. The values X and Y are coordinated so that the display displays the value Y=K/X1/2, where K is a constant.