United States Patent (10) Patent No.: US 9,508,327 B2 Jackson (45) Date of Patent: Nov
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USOO9508327B2 (12) United States Patent (10) Patent No.: US 9,508,327 B2 JacksOn (45) Date of Patent: Nov. 29, 2016 (54) PITCH ADJUSTMENT DEVICE FOR 2,998,742 A 9, 1961 Pratt STRINGED MUSICAL INSTRUMENTS 3.248,991 A * 5/1966 Cole ........................ G1OD 3/12 84/313 3,390,600 A 7/1968 Kelly, Jr. (71) Applicant: David H. Jackson, Dahlonega, GA 3,479,917. A 1 1/1969 Zitnik, Jr. et al. (US) 3,688,631 A 9, 1972 Jackson 4,080,864 A 3, 1978 Jackson (72) Inventor: David H. Jackson, Dahlonega, GA 4,080,865 A * 3/1978 Gfell ...................... G10D3/143 (US) 84,297 R 4,170,161 A * 10/1979 Kaftan ................... G10D3/143 (*) Notice: Subject to any disclaimer, the term of this 4.457,201 A 7/1984 Storey 84,297 R patent is extended or adjusted under 35 4,535,670 A 8, 1985 Borisoff U.S.C. 154(b) by 0 days. 4,742,750 A 5/1988 Storey 5,140,884 A 8, 1992 Bowden 5,323,680 A 6/1994 Miller et al. (21) Appl. No.: 15/082,972 5.438,902 A 8, 1995 Baker 5,542,330 A 8, 1996 Borisoff (22) Filed: Mar. 28, 2016 5,567,897 A 10/1996 McEwen (65) Prior Publication Data (Continued) Related U.S. Application Data http://duesenberg.de/en/guitars specials/pomona-6-lapsteel.html. (63) Continuation-in-part of application No. 14/640,693, (Continued) filed on Mar. 6, 2015, now Pat. No. 9,299,323. Primary Examiner — Robert W Horn (51) Int. Cl. (74) Attorney, Agent, or Firm — Vista IP Law Group LLP GIOD 3/4 (2006.01) GIOD 3/04 (2006.01) (57) ABSTRACT (52) U.S. Cl. A pitch adjustment device for selectively adjusting the pitch CPC. G10D3/14 (2013.01); G10D 3/04 (2013.01) of at least one of a plurality of Strings on a stringed musical (58) Field of Classification Search instrument. The device comprises a Support frame config CPC ........ G1OD 3/143: G1 OD 3/14: G1 OD 37146: ured to be mounted onto the stringed musical instrument. A s G10D3/04 string puller is rotatably coupled to the Support frame. A See application file for complete search history. string support is coupled to the string puller. The String Support is adjustably positionable along the string puller to (56) References Cited selectively position the string Support on the string puller in alignment with each of the strings one at a time. The string U.S. PATENT DOCUMENTS Support also has a string retainer for securing a string. A lever is coupled to the string puller Such that pivoting the 2,323,969 A * 7/1943 Biederman ............ G10D3/143 lever rotates the string puller and the string Support relative 24f68 CT to the frame about the first axis. The lever has a normal 2,603,119 A * 7/1952 Dearth ................... G10D3/143 84,312 R position and an actuated position in which the lever is 2,844,985 A 7, 1958 Ferriera pivoted to adjust the pitch. 2.949,806 A * 8, 1960 Turman ................. G1OD 3.146 84,297 R 24 Claims, 9 Drawing Sheets US 9,508,327 B2 Page 2 (56) References Cited 7,759,568 B2 7/2010 Jackson 8,044,287 B2 10/2011 Jackson U.S. PATENT DOCUMENTS 9,251,768 B2 * 2/2016 Lionello ................ G10D3/143 9,299,323 B1* 3/2016 Jackson ................... G10D 1.08 5,585,580 A 12/1996 Higgins 9,324,308 B1 * 4/2016 Clarke ................... G10D3/143 5,739,444. A 4, 1998 Borisoff 9,330,639 B1* 5/2016 Armstrong ... GOD 3.146 76. A 36 ER" G10D3/143 9,424,820 B2 * 8/2016 Jackson ... G10D3/143 - w W4W a w K-1 - w J. J. W. J. &c. 84.264 2016/0260420 A1* 9, 2016 Jackson ................... G10D3/04 5,986, 190 A 11, 1999 Wolff et al. 7,247,779 B2 7/2007 Zumsteg OTHER PUBLICATIONS 7,329,808 B2 * 2/2008 Davis ..................... G10D3/143 84.298 http://www.tremorbender.com/. 7.465,860 B2 12/2008 Jackson http://www.bowdenbbenders.com/. 7,645,927 B1 1/2010 Jackson 7,696,420 B2 4/2010 Thompson * cited by examiner U.S. Patent Nov. 29, 2016 Sheet 1 of 9 US 9,508,327 B2 U.S. Patent Nov. 29, 2016 Sheet 2 of 9 US 9,508,327 B2 U.S. Patent Nov. 29, 2016 Sheet 3 of 9 US 9,508,327 B2 U.S. Patent Nov. 29, 2016 Sheet 4 of 9 US 9,508,327 B2 U.S. Patent Nov. 29, 2016 Sheet 5 Of 9 US 9,508,327 B2 U.S. Patent Nov. 29, 2016 Sheet 6 of 9 US 9,508,327 B2 U.S. Patent Nov. 29, 2016 Sheet 7 Of 9 US 9,508,327 B2 Fig. 9 U.S. Patent Nov. 29, 2016 Sheet 8 of 9 US 9,508,327 B2 U.S. Patent Nov. 29, 2016 Sheet 9 Of 9 US 9,508,327 B2 US 9,508,327 B2 1. 2 PTCHADUSTMENT DEVICE FOR Open A tuning -E-A-E-A-C#-E: Open G tuning -D-G-D-G- STRINGED MUSICAL INSTRUMENTS B-D; to name a few among many more. In the course of playing certain stringed instruments, in RELATED APPLICATIONS particular a steel guitar, a musician may desire to produce characteristic effects, and/or change the overall tuning of the This application is a continuation-in-part of U.S. patent instrument, by changing the pitch of one or more selected application Ser. No. 14/640,693, filed Mar. 6, 2015, now strings by adjusting the tension of the particular string(s), U.S. Pat. No. 9,299,323, issued Mar. 29, 2016, Priority to the rather than by modifying the vibrating length of the string(s) aforementioned application is hereby expressly claimed in by “fingering on a fretboard or placing a movable slide (or accordance with 35 U.S.C. Section 119(e), 120, and any 10 “tone bar or “fret bar') along the string(s). Changing the other applicable laws. The aforementioned application is pitch of just selected Strings allows the musician to expand hereby incorporated by reference herein in its entirety. the amount of tonal and chordal variation available to the FIELD OF THE INVENTION musician in playing the Stringed instrument. 15 While the tuning keys provide for relatively convenient The field of the invention generally relates to stringed tuning of the “open pitch' (the fundamental pitch of the musical instruments, and more particularly to a device for properly tuned, unstopped, full string) of each String, musi selectively adjusting the tension (and therefore pitch) of the cians often desire to modify the open pitch of one or more strings of Such musical instruments while the instrument is strings while playing the instrument. The tuning keys are not being played. convenient for adjusting the pitch of a string while playing for a variety of reasons. For one, the keys are not located in BACKGROUND OF THE INVENTION a convenient location for the musician to adjust manually because the musician is generally using both hands to play In general, stringed musical instruments commonly com the instruments, with one hand strumming or plucking the prise a body having a first end with a Support for attaching 25 strings and the other hand manipulates the Strings to adjust one end of the strings, a second end having a Support for their pitch to form desired tones. In addition, the tuning keys attaching the other end of the strings and a tuning apparatus do not allow for a calibrated or consistent adjustment of for adjusting the tension, and thus the pitch, of each of the pitch to an adjusted pitch, or consistent return to the original strings. As one example, a steel guitar is a generally hori open pitch, but instead both changes in pitch vary with the Zontally mounted guitar having a head end and a tail end and 30 amount of manual rotation of the key which is inherently a plurality of strings extending therebetween. The head end imprecise as it depends on the manual precision of the is provided with a plurality of tuning keys (one for each musician. string) to which one end of a string is secured. The tuning In the past, various pitch adjusting mechanisms for adjust keys allow manual adjustment of the pitch of each string to ing the pitch of select strings of a stringed musical instru tune the guitar. The other end of the string is secured to a 35 ments while playing the instrument have been proposed. bridge at the tail end of the guitar. These pitch adjusting mechanisms generally operate by In addition, stringed instruments such as guitar, Steel selectively increasing or decreasing the tension or pitch of a guitars, and the like, typically have more than one possible string by moving one of the secured ends of the string to tuning. A “tuning of a stringed instruments means the either decrease the vibrating length of the string (which pitches assigned to the open pitch (the fundamental pitch of 40 increases the tension and raises the pitch) or increase the the properly tuned, unstopped, full String) of each of the vibrating length of the string (which decreases the tension strings on the stringed instruments. For example, the stan and lowers the pitch). Although not limited to steel guitars, dard tuning, which is the most common tuning, of a stan these types of pitch adjusting mechanisms have found dard, six string guitar, from lowest pitch string (top string in widespread application on Steel guitars.