Miniature inductances

Claim 2

A miniature inductance element having ring-shaped core means extending around an axis for magnetic interaction with one or more electrical windings, a pair of similarly shaped end caps made of soft-surface, resilient and yielding plastic and being individually mounted on the core means in symmetrical relation to each other and with reference to an axial plane running through the center of the core means, the windings being wound around and disposed on smooth surface portions of the caps as placed onto the core means, the caps each having a hub extending into the central aperture of the ring of the core means and axially facing the hub of the respective other caps, each cap further having a flat annulus from which the respective hub extends, each annulus having a bevelled peripheral portion extending adjacent a portion of the outer periphery of the core toward the bevelled portion of the respective other annulus to maintain the windings in spaced apart relationship to the core means, the bevelled portions of the end caps as well as the hubs spaced apart from each other.

Claim 3

A miniature inductance element having ring-shaped core means extending around an axis for magnetic interaction with one or more windings, a pair of ring-shaped discs each disc having a central aperture and disposed on the core means, coaxial thereto each disc having a hub extending axially from the respective central aperture of each disc, the discs further disposed symmetrical to a plane normal to the axis and running through the center of the core means, the inner diameter of each the central aperture of the discs being smaller than the inner diameter of the central aperture of the ring of the core means, the outer diameter of each of the discs being larger than the outer diameter of the ring of the core means, each of the discs constructed from soft-surface resiliently yielding plastic material; electrical windings wound about the discs, the windings bending and holding the peripheral portions of the discs axially along the outer periphery of the core means, the peripheral portions of the discs tensioning the electrical windings, whereby the windings are held in a tight fit position about the discs.

Claim 4

A miniature inductance element having ring-shaped core means extending around an axis for magnetic interaction with one or more windings, a pair of ring-shaped discs each disc having a central aperture and disposed on the core means, coaxial thereto each disc having a hub extending axially from the respective central aperture of each disc, the discs further disposed symmetrical to a plane normal to the axis and running through the center of the core means, the inner diameter of each the central aperture of the discs being smaller than the inner diameter of the central aperture of the ring of the core means, the outer diameter of each of the discs being larger than the outer diameter of the ring of the core means, each of the discs constructed from soft-surface resiliently yielding plastic material; electrical windings wound about the discs, the windings bending and holding the peripheral portions of the discs axially along the outer periphery of the core means, the peripheral portions of the discs tensioning the electrical windings, whereby the windings are held in a tight fit position about the discs.

Claim 5

The miniature inductive element as set forth in Claim 1, the outer diameter of the hub being slightly larger than the diameter of the center opening of the core means to be frictionally retained therein.