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:
Oct. 25, 1994
Filed:
May. 21, 1993
Robert Benson, Buena Park, CA (US);
Other;
Abstract
A pitch changing apparatus, providing bi-stable operation within a tremolo system which produces two distinct pitches for selected strings. The apparatus includes a shifting element 56, which is engagable to introduce or remove a pre-determined thickness within a tremolo system, creating string tensions relative to chosen, distinct pitches. An established ratio of total string tension and opposing spring counter-tension acting upon a tremolo is maintained by a tension correcting mechanism 73. The tension correcting mechanism is manually rotated to adjustable stop positions of required spring counter-tension, thereby keeping all strings in tune under conditions of changed total string tension.