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A Christmas stocking having illumination means associated therewith for signalling the arrival of Santa Claus.
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| Number | Title | Issue Date |
| 4239944 | Spider of loudspeaker A spider of loudspeaker having a base material in the form of a plain-woven fabric of warps and wefts each of which constituted by fibers of an inorganic material. The warps and wefts are coated with a thermosetting resin which in turn is coated with a th... | 12/16/1980 |
| 4190746 | Diaphragm material for moving coil loudspeaker, may be laminated or integral with surround A diaphragm for a moving evil loudspeaker is formed of a material which has a mechanical "0"value of from 7 to 12, a Youngs modulus of from 8.5 to 17.5 × 105 KN/M2 and a density of from 0.85 to 1.05 g/cc. The diaphragm forming mate... | 02/26/1980 |
| 4152552 | Horn speaker and method for producing low distortion sound An acoustical horn speaker for producing low distortion sound comprised of a casing assembly having a voice coil gap and a magnetic source and return circuit for providing a constant magnetic field across the gap, a current-carrying voice coil disposed in... | 05/01/1979 |
| 4146756 | Moving voice coil transducer with diaphragm having concentric sections of opposite curvature An electroacoustic transducer in which a diaphragm of a loudspeaker for converting an electrical signal into an acoustic signal comprises a lower section and an upper section thereof which are split axially of a center pole of a magnetic circuit. The lowe... | 03/27/1979 |
| 3991286 | Heat dissipating device for loudspeaker voice coil The coil form for a loudspeaker voice coil is made of a material having high thermal conductivity. The coil form is attached to or integrally formed with a highly thermally conductive spider member which resiliently supports the coil form on the frame str... | 11/09/1976 |
| 3953687 | Magnetic structure for moving voice coil loudspeaker A loudspeaker magnet structure has a flat annular, torus shaped, permanent magnet with a central cylindrical pole piece of magnetically conductive material extending coaxially through the magnet. A back plate of magnetically conductive material is lapped ... | 04/27/1976 |
