Grommet assembly for warming liquids on work surface

• US 7,989,738 B2
• Filed: 12/14/2006
• Issued: 08/02/2011
• Est. Priority Date: 12/14/2006
• Status: Active Grant

• Current Assignee: Norman R. Byrne
• Original Assignee: Norman R. Byrne
• Inventors: Byrne, Norman R
• Primary Examiner(s): PAIK, SANG YEOP
• Application Number:
  US11/610,903
• Publication Number:
  US 20080142504A1
• Time in Patent Office: 1,692 Days
• Field of Search: 2194321-4682, 219402-407, 219415-424, 219/536, 219/537
• US Class Current: 219/452.11
• CPC Class Codes: A47J 36/2461 with electrical heating means

Abstract

A liquid warming grommet assembly (400, 500) maintains liquids or other materials in a vessel (406) at a desired temperature. The grommet assembly (400, 500) includes a grommet (408) receivable within an aperture in a work surface (404). A heating element (440) is receivable within a casing (410) of the grommet (408), and an upper warmer plate (444) is positioned at the upper portion of the heating element (440) and is substantially flush with the work surface (404).

Claims

1. A liquid warming grommet assembly for use in maintaining liquid or other materials in a vessel at a desired temperature, said grommet assembly adapted to be mounted to a work table or other furniture item having a work surface, said grommet assembly comprising:

a grommet having a lower casing receivable within an aperture within said work surface, said grommet also having an upper collar, said casing forming a housing interior;

a heating element comprising a lower element housing adapted to be received within said housing interior, and an upper warmer plate adapted to be positioned substantially flush with said work surface;

power connection means connected to said heating element and connectable to a source of electrical power, so as to energize said heating element;

a plurality of alignment slots mounted to an inner surface of said casing;

a plurality of element ears mounted to outer surfaces of said element housing, with each of said element ears adapted to be received within a corresponding one of said alignment slots;

a plurality of press-fit ribs located on an outer surface of said casing;

a power switch positioned on an outer surface of said element housing, and adapted to selectively enable or disable power being applied to said heating element from said source of electrical power; and

a finger slot cut into said warmer plate above said power switch.

2. A liquid warming grommet assembly in accordance with claim 1, characterized in that said grommet assembly further comprises a plurality of latching cam assemblies adapted to removably secure said grommet to said work table.

3. A liquid warming grommet assembly for use in maintaining liquid or other materials in a vessel at a desired temperature, said grommet assembly adapted to be mounted to a work table or other furniture item having a work surface, said grommet assembly comprising:

a grommet having a casing receivable within a slot of said work surface, and further having an upper collar, said casing forming a housing interior;

a heating element comprising a lower element housing adapted to be received within said housing interior, and an upper warmer plate adapted to be positioned substantially flush with said work surface;

power connection means connected to said heating element and connectable to a source of electrical power, so as to energize said heating element; and

a power switch mounted to an external surface of said element housing, and manually operable by a user for selectively enabling and disabling application of said electrical power to said heating element.

4. A liquid warming grommet assembly in accordance with claim 3, characterized in that:

said housing interior comprises at least two alignment slots positioned on interior surfaces of said casing; and

said heating element further comprises at least two element ears mounted outside of said element housing, said element ears adapted to be received within corresponding ones of said alignment slots, so as to maintain said heating element in an appropriate alignment relative to said grommet.

5. A liquid warming grommet assembly in accordance with claim 3, characterized in that an outer surface of said casing comprises a plurality of press-fit ribs, so as to provide a friction fit with an inner surface of said slot when said grommet is received within said aperture.

6. A liquid warming grommet assembly in accordance with claim 3, characterized in that said power connection means comprises an electrical cord with electrical wires extending therethrough, and a multi-prong plug connected to said electrical wires and adapted to be electrically and mechanically connected to an electrical receptacle.

7. A liquid warming grommet assembly in accordance with claim 3, characterized in that said power connection means comprises a flexible conduit having electrical wires extending therethrough and connected to said heating element, and with said electrical wires extending outwardly through an opposing end of said flexible conduit, so that said electrical wires are exposed and connectable to said source of electrical power.

8. A liquid warming grommet assembly in accordance with claim 3, characterized in that said power connection means comprises a flexible conduit having electrical wires therein, and having one end connected to said heating element, and an opposing end of said flexible conduit and said electrical wires connected to a multi-port connector.

9. A liquid warming grommet assembly in accordance with claim 3, characterized in that said grommet assembly further comprises a plurality of latching cam assemblies mounted to said casing and adapted to selectively secure said casing to said work table or other furniture item.

10. A liquid warming grommet assembly in accordance with claim 9, characterized in that said each of said latching cam assemblies comprises:

a cylindrical bushing vertical oriented and integrally coupled with or otherwise secured to an inner surface of said casing, said bushing comprising a vertically disposed cylindrical aperture, said cylindrical aperture having a first cylindrical portion with a diameter sufficient so as to receive a head of a threaded screw, in a counter-sunk configuration.

11. A liquid warming grommet assembly in accordance with claim 10, characterized in that each of said latching cam assemblies further comprises:

a cam element having an upstanding sleeve portion and a horizontally disposed foot integrally formed with or otherwise secured to a lower end of said upstanding sleeve portion, a threaded aperture extending at least partially through said upstanding sleeve portion and adapted to threadably receive said threaded screw; and

said horizontally disposed foot comprising a leg extending from an underside of said upstanding sleeve portion, and a boss projecting upwardly from a distal section of said leg.

12. A liquid warming grommet assembly in accordance with claim 3, characterized in that said heating element is sized and configured so as to comprise a finger slot cut out of said warmer plate directly above said power switch.