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US5606639A Expired / Lapsed US ⏱️ 0.0 years remaining

Stationary ceramic glass electric baseboard heater

Assignee: MICHAEL LEHOE
•
Filing: 1995-01-10
•
Granted: 1997-02-25
•
Expires: 2015-01-10
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Abstract

Abstract An electric baseboard heater includes a ceramic glass block within which a steel wire electric heating element is insert molded and which is provided with several through holes for convective movement of air through the block. The ceramic glass block is mounted in a heater housing which includes a lower draft opening below the ceramic glass block and an upper air outlet above the ceramic glass block. The glass block is preferably mounted so that one of its faces is exposed by the housing. When a voltage is applied to the steel wire, heat is generated by the wire and is absorbed and radiated by the ceramic glass block. Cool air is drawn into the draft opening in the housing and up through the through holes in the ceramic glass block whereupon it exits the air outlet heated by the ceramic glass block. The ceramic glass block is advantageously mounted at an angle in the housing to provide an aesthetically pleasing appearance while at the same time increasing the convective movement of air through the heater. The housing may be made of plastic or thin metal with a plastic film or enamel coating. The ceramic glass block may be clear so that the heating element can be seen to glow red when the heater is turned on. Alternatively, the ceramic glass block may be tinted or colored.

Inventors

  • 👤 Michael C. Lehoe
  • 👤 James S. Lehoe
  • 👤 James A. Lehoe

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 00:40
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/002; H; H05; H05B; H05B3/00; H05B3/10; H05B3/12; H05B3/14; H05B3/141; H05B3/18

Claims Analysis

Total Claims: 15
Claim 1
Independent Claim 81 words
An electric baseboard heater comprising: a) a housing having a lower air inlet and an upper air outlet; b) a ceramic glass block mounted in said housing between said lower air inlet and said upper air outlet, said ceramic glass block having at least one through hole for allowing air entering said lower air inlet to pass through said ceramic glass block and out of said upper air outlet; c) an electric heating element insert molded in said ceramic glass block.
Claim 2
Dependent Claim 81 words
An electric baseboard heater comprising: a) a housing having a lower air inlet and an upper air outlet; b) a ceramic glass block mounted in said housing between said lower air inlet and said upper air outlet, said ceramic glass block having at least one through hole for allowing air entering said lower air inlet to pass through said ceramic glass block and out of said upper air outlet; c) an electric heating element insert molded in said ceramic glass block.
Claim 3
Dependent Claim 32 words
An electric baseboard heater according to claim 1, wherein: said at least one through hole is disposed at an angle of approximately 67° relative to a vertical back portion of said housing.
Claim 4
Dependent Claim 17 words
An electric baseboard heater according to claim 1, wherein: said electric heating element is a steel wire.
Claim 5
Dependent Claim 29 words
An electric baseboard heater according to claim 3, wherein: said steel wire has at least three turns so that it traverses said ceramic glass block at least four times.
Claim 6
Dependent Claim 32 words
An electric baseboard heater according to claim 4, wherein: said steel wire has two ends and both ends exit said ceramic glass block on the same side of said ceramic glass block.
Claim 7
Dependent Claim 21 words
An electric baseboard heater according to claim 5, wherein: each end of said steel wire is provided with an electrical connector.
Claim 8
Dependent Claim 22 words
An electric baseboard heater according to claim 6, wherein: each of said electrical connectors are insert molded in said ceramic glass block.
Claim 9
Dependent Claim 38 words
An electric baseboard heater according to claim 1, wherein: said ceramic glass block has a front face and a rear face with said at least one through hole being located between said front face and said rear face.
Claim 10
Dependent Claim 25 words
An electric baseboard heater according to claim 8, wherein: said ceramic glass block is mounted in said housing so that said front face is exposed.
Claim 11
Dependent Claim 26 words
An electric baseboard heater according to claim 8, wherein: said electric heating element is located between said rear face and said at least one through hole.
Claim 12
Dependent Claim 30 words
An electric baseboard heater according to claim 1, wherein: said at least one through hole comprises a plurality of through holes spaced along the length of said ceramic glass block.
Claim 13
Dependent Claim 20 words
An electric baseboard heater according to claim 11, wherein: said plurality of through holes are arranged parallel to each other.
Claim 14
Dependent Claim 21 words
An electric baseboard heater according to claim 12, wherein: said plurality of through holes each has a substantially square cross section.
Claim 15
Dependent Claim 37 words
An electric baseboard heater according to claim 1, further comprising: d) a thermostat mounted on the interior of said housing; and e) a heat sensor attached to said ceramic glass block and electrically coupled to said thermostat.

References Cited (Backward Citations)

CA592683A Cited
US2904666A Cited
US3293409A Cited
US3356829A Cited
US3691345A Cited
US4311898A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2000-02-25 2000-08-26 2001-02-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2004-02-25 2004-08-26 2005-02-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2008-02-25 2008-08-26 2009-02-25 $7700.00 Window Closed / Lapsed

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