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US 4,787,285 AGranted
Anchor bolt device for tremold device
AssigneeGotoh Gut Yugen Kaisha
InventorTakao Goto
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AssigneeGotoh Gut Yugen Kaisha
InventorTakao Goto
Estimating the term…
An anchor bolt device for a tremolo device which is constructed so that a bolt is thread-fitted to a bottomed and threaded tube which is buried to be open upwardly in a stringed instrument, said bolt being provided at its top part with a groove for securing the front edge portion of said tremolo device and at the center of the bolt in its axial direction with a through hole inside which a pushing member capable of shifting itself inside said through hole with an external operation is thread-fitted and being tightly fixed by protruding said pushing member from said through hole so that the lower end of said pushing member contacts under a pressure with the bottom of the tube after the position of the groove has been adjusted by shifting said bolt in the tube.
An anchor bolt device for a tremolo device comprising
Dependencies are inferred from the claim text.
No related US applications are recorded in the indexed filing history.
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Devices for altering the string tension during playing: tremolo devices
Stringed musical instruments
Term ended 7 Oct 2007 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
The present invention relates to the anchor bolt device for use in a tremolo device of a stringed instrument.
This anchor bolt device is provided to secure the front end of the base of the tremolo device and serve as a pivot for pivotal motion of the tremolo device.
Therefore the conventional anchor bolt device comprises a bolt which is provided with a groove which engages with the front end of the base of the tremolo device in the circumferential direction and a threaded tube into which said bolt is thread-fitted to hold the bolt so that the position of the groove can be shifted and this tube is buried in a stringed instrument such as a guiter and the bolt is thread-fitted to said tube.
FIG. 1 is a vertical crosssectional view showing the important part of the guitar provided with the anchor bolt device in accordance with the present invention,
FIG. 2 is a vertical crosssectional side view showing a condition of the anchor bolt device in accordance with the present invention when it is used,
FIG. 3 is a partly cutaway disassembled view of the anchor bolt device according to the present invention, and
FIG. 1 shows the important part of a stringed instrument such as, for example, a guitar 10 which the anchor bolt device in accordance with the present invention is provided, and this guitar 10 is provided with the tremolo device 11.
Said tremolo device 11 is adapted as the conventional type to be secured with the anchor bolt device A in accordance with the present invention by the engaging means such as, for example, the engaging hole 111 which is provided at the front edge of the tremolo device and pivotally moved around the anchor bolt device A serving as the pivot.
The anchor bolt device A in accordance with the present invention in constructed to have the tube 20 which is buried and secured in the guitar 10, bolt 30 which is thread-fitted to the tube 20 and the pushing member 40 which is internally provided in said bolt 30.