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:
Jan. 15, 1991
Filed:
May. 11, 1990
Applicant:
Inventor:
Helmut F Schaller, Feucht, DE;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10D / ;
U.S. Cl.
CPC ...
84313 ;
Abstract
A counter-tensioning mechanism for use with a tremolo device attached to a guitar or similar stringed musical instrument includes a moveable spring anchor for attachment to the ends of springs attached at their other ends to the string anchor of the device. Movement of the spring anchor in one direction or the other to increase or decrease the spring forces applied to the string anchor is effected by two parallel counter-rotating threaded shafts threadably engaging the spring anchor and driven in unison by two gears fixed to the shafts and drivingly connected with a manually rotatable third gear rotatable about a third axis preferably perpendicular to the plane of the first and second axes.