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:
May. 29, 1990
Filed:
Aug. 22, 1988
David J Borisoff, Canoga Park, CA (US);
Boris Borisoff, Woodland Hills, CA (US);
Other;
Abstract
An apparatus and method of fine tuning an electric guitar having a plurality of guitar strings, a tremolo system including a bridge plate assembly having a pivotal connection to the guitar body and connected to each of said guitar strings, a tremolo arm connected to said bridge assembly for movement thereof about said pivotal connection, a bridge lever arm or sustain block on said bridge assembly extending into a cavity on the bottom face of said guitar and counterbalance springs connected to said guitar body in said cavity and connected to said lever arm of the bridge assembly and a tremolo control and stabilizer connected at one end to said guitar body and at the other end to said bridge plate assembly lever arm, said stabilizer including a composite spring means under compression and an adjustable nut for varying the compression of the composite spring. A method of stabilizing a neutral position of a tremolo system including a pivoted bridge assembly including the steps of tensioning all of the strings of a guitar to a selected pitch slightly less than a desired pitch, tensioning certain counter-balance springs connected between said bridge assembly and the guitar body to oppose the string tension, and mechanically adjusting a certain counter-balance spring to bring the tension in the guitar strings to a desired pitch whereby said mechanical adjustment provides a mechanical stop for returning all of the guitar strings to a selected pre-tuned pitch.