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US 6,303,910 B2Granted
Method of making an injection molded paraffin bath and apparatus made thereby
AssigneeHoMedics, Inc.
InventorsDov Glucksman, Roman S. Ferber
Life of this patent
Estimating the term…
Abstract
A paraffin bath apparatus has injection molded components including an inner tub, housing, base, control panel, and lid. The inner tub is provided with paired flanges on its bottom surface to which a wire heating element is assembled and secured. Wire guides are provided on the upstanding wall of the inner tub to which a side heating wire is assembled and secured by means of wire guides and an adhesive coated foil segment.
Claims17
A paraffin bath apparatus for melting paraffin comprising:
- a housing having a base wall and a side wall defining an upper opening;
- a polymeric inner tub that is generally cup shaped having a bottom wall and an upstanding wall defining an open top, the inner tub being received within upper opening of the housing with the bottom wall overlying the base wall, the inner tub being adapted to contain melted paraffin;
- a heating element is disposed between the inner tub and the housing, the heating element providing heat through the inner tub sufficient to melt the paraffin but below the temperature that would adversely effect the polymeric material forming the inner tub, the heating element comprising a wire at least partially retained in a series of loops between paired flanges that are integrally molded of the same polymeric material forming the inner tub walls, the paired flanges being spaced apart to receive portions of the wire;
- and
- a thermostat electrically connected to the heating element to control the heat provided to the inner tub.
2 more elements
A method of making a paraffin bath appliance comprising:
- providing a housing having a base wall, a side wall and an upper opening;
- injection molding an inner tub having a base having inner and outer sides and a wall extending from the base to an upper opening, and simultaneously molding a plurality of wire retainer flanges on the outer side of the base;
- assembling a wire to the wire retainer flanges;
- connecting the wire to a controller for controlling the heat generated by the wire;
- and
- assembling the inner tub to the housing and thereby enclosing a space between the inner tub and housing that contains the wire.
3 more elements
Dependencies are inferred from the claim text.