Abstract: An instrument comprising a neck-to-body junction including a solid upper body portion to which the instrument's neck and fingerboard are attached forming a neck member. The neck member is then engaged with a hollow cavity representative of the lower body an acoustic or semi-acoustic stringed instruments. The upper body portion of the neck member extends into the hollow cavity of the lower body to create a uniform body structure. A carve-out feature is then formed in close proximity to the base of the neck and extends into the underside of the upper body portion. The carve-out comprises a smooth and continuous surface that enables a player's hand to comfortably access higher positions on the instrument's neck when the instrument is played in the normal playing position.

Abstract: An instrument comprising a neck-to-body junction including a solid upper body portion to which the instrument's neck and fingerboard are attached forming a neck member. The neck member is then engaged with a hollow cavity representative of the lower body an acoustic or semi-acoustic stringed instruments. The upper body portion of the neck member extends into the hollow cavity of the lower body to create a uniform body structure. A carve-out feature is then formed in close proximity to the base of the neck and extends into the underside of the upper body portion. The carve-out comprises a smooth and continuous surface that enables a player's hand to comfortably access higher positions on the instrument's neck when the instrument is played in the normal playing position.

Abstract: A system for producing vertical lift has a substantially rigid upper rotating disk (44) of dense solidity ratio whose discharge air flow is centrally routed via a vertical vortex shaft (24) to coact with lower coaxially rotating airfoil (34) and duct fan (36) elements. The upper disk (44) includes a spirally configured array of curved wings (40A-40D) which rotate in a first direction to produce lift and a cyclonic air discharge into an upper end of the vertical shaft (24). The lower rotating airfoil (34)/fan (36) elements are positioned at the lower end of the vertical shaft (24) and rotate in a counter direction to neutralize torques, induce downward air flow through the vertical shaft (24), and further provide lift and vertical thrust.