3 results about "Ovoid shape" patented technology

New forms of free weights for weight training are provided. Such free weights may include a flexible, gripping ring set in a channel with a varying width, configured to be threaded over the end of a barbell. The channel may include a locking notch. Such a free weight may be rotated until the channel is aligned with a floor (perpendicular to gravity) and then loaded onto the barbell by threading the gripping ring onto the barbell. The free weight is then rotated 90 degrees causing the barbell and gripping ring to travel away from a center of the channel, where the channel narrows and includes the locking notch. The gripping ring is resultingly deformed by the narrower section of the channel entered, into an ovoid shape, gripping the barbell by force of gravity. A user may then reverse these steps, to release and unload the free weight from the barbell.

A hinge composed of two coaxial, overlapping constituent wings, each of which is composed of a body having an ovoid profile with a cavity inside, where one of the constituent wings carries a smaller diameter pin stably engaged within the cavity, the pin being surrounded by a spring, the pivot and the spring are adapted to engage with the cavity of the other component wing, the coaxial component wing having a tangential groove on the base surface of the internal cavity for receiving the terminal attachment of the spring.

A device for extracting seminiferous tubules, comprising a hollow cylinder (1), one end of which has a base (2) connectable to a suction device; a tip (3) located at the opposite end of the base (2); wherein the tip (3) has an ovoid shape, the interior of which contains a recessed area (6) having a radius of curvature, which is contained in the plane to which the axis of the cylinder (1) belongs, thereby forming a spoon-shaped or cup-shaped structure capable of accommodating seminiferous tubules and of extracting seminiferous tubules from the cylindrical body (1) when the extraction device is under negative pressure by means of a suction device connected to the base (2). At least one seminiferous tubule can be retained in the recessed area (6).