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. 17, 2020
Filed:
Jan. 18, 2017
Stephen J. Cole, Arcata, CA (US);
Stephen J. Cole, Arcata, CA (US);
MARIMBA ONE INC., Arcata, CA (US);
Abstract
A keyboard percussion instrument () generates sounds when keys () or other such members are struck. A movable damper bar () is brought into contact with the keys to artistically shorten their ringing duration. When pressed, a pedal () removes the damper bar from contact with the keys. When the pedal is released, a spring () urges the damper bar into contact with the keys. The damper bar is supported by a pair of arms () that pivot about pivot points () at the ends of movable posts () that extend from a pair of pivot height adjusting mechanisms (). Each pivot height adjusting mechanism has two adjusting screws. A first screw () urges a post to move up or down and a second screw () fixes the post in position when tightened. Adjusting the heights of the pivot points provides control over the damping of key vibrations.