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US 5,246,353 AGranted
Air breezing pump
OwnerTong-Hoon Sohninventor
Life of this patent
Estimating the term…
Abstract
An air breezing pump designed to supply air for biasing the vibrator of a speaker by providing a conventional speaker with an air inlet valve and an air outlet valve on its vibrating medium, and thereby excluding existing ducts from the enclosure of the speaker assembly.
Claims12
An air breezing pump, comprising:
- a housing having a cup-shaped container having an open end, and cylindrical-shaped expandable bellows connected to said cup-shaped container and forming an air-tight junction closing said open end of said cup-shaped container;
- a reciprocating unit having a cup-shaped bobbin, a moving coil wound around said bobbin, a cylinder spaced-apart and surrounding said bobbin, a piston stem having one terminus coupled to and extending axially outward from one end of said bobbin, a circularly-shaped piston connected to a second terminus of said piston stem, said bellows extending between and forming an expandible chamber between said cup-shaped container and said piston;
- an air inlet valve enabling passage of air into said chamber;
- an air outlet valve enabling passage of atmospheric air from within said chamber;
- and
- a magnetic circuit having a cylindrical centrally positioned pole, an annular yoke adjoining said pole, a permanent magnet positioned upon said yoke, a ferrite core spaced apart from said coil, a plate surrounding a plurality of sides of said ferrite core, said plate being spaced-apart from said bobbin and positioned upon said magnet.
3 more elements
An air breezing pump, comprising:
- a containing unit;
- a reciprocating unit;
- and
- a magnetic circuit;
- wherein said containing unit comprises a cup-shaped container and cylindrical-shaped bellows connected to said container;
- the reciprocating unit comprising a cup-shaped bobbin, moving coils wound around said bobbin, a cylinder formed around said bobbin, a piston stem coupled to the top of one end of the bobbin, a piston connected to said piston stem and said bellows, and an air inlet valve and air outlet valve formed in said reciprocating unit;
- the magnetic circuit comprising a cylindrical centrally positioned pole, an annular yoke adjoining said pole, a permanent magnet positioned upon said yoke, a ferrite core spaced apart from said coil, and a plate surrounding a plurality of sides of said ferrite core, said plate being spaced-apart from said bobbin and positioned upon said magnet.
4 more elements
Dependencies are inferred from the claim text.