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US3969610A Expired / Lapsed US ⏱️ 0.0 years remaining

Liquid heating device

Assignee: Lawrence Peska Associates Inc
•
Filing: 1975-01-20
•
Granted: 1976-07-13
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Expires: 1995-01-20
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Abstract

Abstract A liquid heating device is used to heat a liquid at a preselected time for a predetermined length of time such as in percolating coffee. The device broadly consists of a cylindrical container having a closed bottom base, a removal top lid cover, a pouring spout affixed to the sidewall of the container as well as a U-shaped handle affixed to the sidewall of the container. A transparent tube is provided as a means of indicating the liquid level within the container. A control panel on the bottom outside periphery of the sidewall of the container has an inlet electrical receptacle, an indicator light unit, a two way switch assembly, and a timer assembly.

Inventors

  • 👤 Helen Ratti
  • 👤 Charles Ratti

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 11:27
CPC Classifications
A; A47; A47J; A47J27/00; A47J27/56; A47J27/62

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 226 words
A liquid heating device, which comprises: a. a cylindrically shaped container having a closed base, an upwardly extending cylindrically shaped sidewall, an interior chamber therein, wherein a pouring spout and a U-shaped handle communicate with said sidewall; b. a removable top lid cover communicating with an open top end of said container; said container and said lid cover being of thermally and electrically insulating material; c. a control panel contained on a bottom outside periphery of said sidewall; d. an inlet receptacle, a two way switch assembly, a light unit and a timer assembly contained in said control panel; and e. an interior electrical heating element within said interior chamber electrically communicating in an electric circuit, said electric circuit including a first series circuit of a power source, said two way switch, a first electrical juncture, a thermostatic unit in fluid contact with a liquid adapted to be received in said interior chamber, a second electrical juncture, said heating element, a third electrical juncture, and a fourth electrical juncture, a second series circuit of a fifth electrical juncture and said timer assembly joined between said switch assembly and said first electrical juncture, and a third series circuit of said light unit and a variable heat responsive switch, said heat responsive switch joined to said third and said fourth electricl junctures, said electric circuit being electricaly insulated.
Claim 2
Dependent Claim 226 words
A liquid heating device, which comprises: a. a cylindrically shaped container having a closed base, an upwardly extending cylindrically shaped sidewall, an interior chamber therein, wherein a pouring spout and a U-shaped handle communicate with said sidewall; b. a removable top lid cover communicating with an open top end of said container; said container and said lid cover being of thermally and electrically insulating material; c. a control panel contained on a bottom outside periphery of said sidewall; d. an inlet receptacle, a two way switch assembly, a light unit and a timer assembly contained in said control panel; and e. an interior electrical heating element within said interior chamber electrically communicating in an electric circuit, said electric circuit including a first series circuit of a power source, said two way switch, a first electrical juncture, a thermostatic unit in fluid contact with a liquid adapted to be received in said interior chamber, a second electrical juncture, said heating element, a third electrical juncture, and a fourth electrical juncture, a second series circuit of a fifth electrical juncture and said timer assembly joined between said switch assembly and said first electrical juncture, and a third series circuit of said light unit and a variable heat responsive switch, said heat responsive switch joined to said third and said fourth electricl junctures, said electric circuit being electricaly insulated.
Claim 3
Dependent Claim 46 words
A liquid heating device as recited in claim 1, wherein said device further comprises a transparent tube member having a continuous bore therethrough passing through the legs of said U shaped handle, wherein the ends of said tube communicate with said interior chamber of said container.

References Cited (Backward Citations)

US900295A Cited
US1475631A Cited
US1702480A Cited
US2562763A Cited
US3247360A Cited
US3226528A Cited
US3385955A Cited
US3530276A Cited
US3781521A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-07-13 1980-01-12 1980-07-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-07-13 1984-01-12 1984-07-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-07-13 1988-01-12 1988-07-13 $7700.00 Window Closed / Lapsed

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