Abstract: A fulcrum tremolo includes intonation modules for fine tuning or macro tuning, an unitary component forming a base plate and an adaptor plate. An improved bearing arrangement features integrated riser posts, combining the bearing axle housing with traditional riser posts, an improved bearing axle supporting bearings positioned within recesses in a bearing housing. A plain end and a threaded end of the bearing axle cooperate with a riser post having a larger plain opening and a second riser post having a threaded opening. The plain end and a ring spacer, positioned between a bearing and the second riser post, positions the bearings away from the tremolo wherein the axle is slideably positioned within the first riser post as the second end of the axle is threadedly secured to the second riser post and thereby adjustably secures the bearing arrangement relative to the body of the instrument for pivotal movement.

Abstract: Apparatus, such as a stringed musical instrument, is provided with intonation modules that include a novel fine-tuning invention that eliminates modifying strings required of prior art comprising an improved clamping element, a hollow tube element forming a tailpiece at one end furthest the second critical point and a novel adaptor plate element connected to a base plate. Clamping the sting renders the string substantially inextensible between the clamping point and the tailpiece formed at the end of the hollow. Threading the string through the hollow tube portion delivers the string over the second critical point effortlessly. The hollow portion of the string holder element is threadedly engaged with an adjustment knob and makes bearing contact with adaptor plate for fine-tuning. The adaptor plate can be added to a unitary component forming the base plate and can provide other functions.

Abstract: Apparatus, such as a stringed musical instrument, is provided with intonation modules that include a novel fine-tuning invention that eliminates modifying strings required of prior art comprising an improved clamping element, a hollow tube element forming a tailpiece at one end furthest the second critical point and a novel adaptor plate element connected to a base plate. Clamping the sting renders the string substantially inextensible between the clamping point and the tailpiece formed at the end of the hollow. Threading the string through the hollow tube portion delivers the string over the second critical point effortlessly. The hollow portion of the string holder element is threadedly engaged with an adjustment knob and makes bearing contact with adaptor plate for fine-tuning. The adaptor plate can be added to a unitary component forming the base plate and can provide other functions.

Abstract: A cam tremolo device for a stringed musical instrument includes a frame secured to the instrument and a tailpiece rotatably connected with the frame and is characterized by a locking mechanism which is manually operable to prevent the tailpiece from rotating. The locking device is preferably a screw which is manually displaced by the operator relative to a threaded opening in the frame and a slot in the string attachment device connected with the tailpiece. When the screw is rotated to a locking position, the screw advances through the frame opening into the slot in the string attachment device. When the screw is rotated to a release position, the screw is retracted from the slot in the string attachment device, thereby allowing the tailpiece to rotate relative to the frame. Thus, the tailpiece is in either a fixed or floating condition, but not both at the same time.

Abstract: A cam tremolo device for a stringed musical instrument includes a frame secured to the instrument and a tailpiece rotatably connected with the frame and is characterized by a locking mechanism which is manually operable to prevent the tailpiece from rotating. The locking device is preferably a screw which is manually displaced by the operator relative to a threaded opening in the frame and a slot in the string attachment device connected with the tailpiece. When the screw is rotated to a locking position, the screw advances through the frame opening into the slot in the string attachment device. When the screw is rotated to a release position, the screw is retracted from the slot in the string attachment device, thereby allowing the tailpiece to rotate relative to the frame. Thus, the tailpiece is in either a fixed or floating condition, but not both at the same time.