Patent US4743726A successfully refreshed from Google Patents.
US4743726A
Expired / Lapsed
US
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Microwave activated heating element
Assignee: Individual
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Filing: 1986-10-14
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Granted: 1988-05-10
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Expires: 2006-10-14
Abstract
Abstract A microwave activated heating element for exposure to high energy microwaves to heat the element includes a water saturated cellular core, water, heat and flame resistant rubber coated with high temperature lubricant, and a wax center core to absorb and store heat from the microwave heated water and rubber. The construction of the heating element may be accomplished in several forms such as concentrically wound, tubular, layered, and sectioned in particles, to conform to the specific design and use of the outer appliance.
Inventors
- 👤 Thomas E. Hughes
- 👤 Calvin L. Seals
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:14
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/02; A45; A45D; A45D1/00; A45D1/02; A45D1/04; A45D1/20; A45D2/00; A45D2/36; A45D4/00; A45D4/16; H; H05; H05B; H05B6/00; H05B6/64; A61F2007/0242
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
117 words
A microwave activated heating element comprising: an outer structure affording a housing and accommodating the passage of high frequency microwaves; a flexible cellular core for receiving and suspending water in a cooled or heated state while allowing the passage of high frequency microwaves, said core being dimensioned for reception within said housing and for distribution of the water such that the water may thoroughly saturate and lie suspended in the cellular core to receive high frequency microwave energy whereby the rapid buildup of water temperature is effected; and a heat and flame resistant flexible rubber element having a predetermined thickness and conformal with the water saturated cellular core to facilitate the reception of high frequency microwave energy.
Claim 2
Dependent Claim
117 words
A microwave activated heating element comprising: an outer structure affording a housing and accommodating the passage of high frequency microwaves; a flexible cellular core for receiving and suspending water in a cooled or heated state while allowing the passage of high frequency microwaves, said core being dimensioned for reception within said housing and for distribution of the water such that the water may thoroughly saturate and lie suspended in the cellular core to receive high frequency microwave energy whereby the rapid buildup of water temperature is effected; and a heat and flame resistant flexible rubber element having a predetermined thickness and conformal with the water saturated cellular core to facilitate the reception of high frequency microwave energy.
Claim 3
Dependent Claim
33 words
A heating element according to claim 1 wherein said heat and flame resistant rubber is coated at least on one side with a high temperature lubricant to promote heat retention in the rubber.
Claim 4
Dependent Claim
42 words
A heating element according to claim 1 including an element within said housing formed of wax for absorbing the heat generated by the water and rubber element to thereby store the heat and release the absorbed heat in a slow, gradual manner.
Claim 5
Dependent Claim
17 words
A heating element according to claim 1 wherein said core and said rubber element are spirally wound.
Claim 6
Dependent Claim
22 words
A heating element according to claim 1 wherein said core and said rubber element lie in alternate concentric layers within said housing.
Claim 7
Dependent Claim
42 words
A heating element according to claim 4 including a core element formed of wax for absorbing heat generated by the water and rubber element, said core element being formed centrally of said housing and within said spirally wound core and rubber element.
Claim 8
Dependent Claim
44 words
A heating element according to claim 5 including a core element formed of wax for absorbing heat generated by the water and rubber element, said core element being formed concentrically of said housing and within said concentric layers of said core and rubber element.
Claim 9
Dependent Claim
25 words
A heating element according to claim 4 in combination with a hair curler having a central opening, said heating element being disposed in said opening.
Claim 10
Dependent Claim
25 words
A heating element according to claim 4 in combination with a hair curler having a central opening, said heating element being disposed in said opening.
Claim 11
Dependent Claim
25 words
A heating element according to claim 5 in combination with a hair curler having a central opening, said heating element being disposed in said opening.
Claim 12
Dependent Claim
25 words
A heating element according to claim 7 in combination with a hair curler having a central opening, said heating element being disposed in said opening.
Claim 13
Dependent Claim
19 words
A heating element according to claim 4 in combination with a hair curling iron, said iron receiving said element.
Claim 14
Dependent Claim
19 words
A heating element according to claim 5 in combination with a hair curling iron, said iron receiving said element.
Claim 15
Dependent Claim
23 words
A heating element according to claim 1 wherein said rubber element and said core are contained within the housing in alternate layers thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-10 | 1991-11-09 | 1992-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-10 | 1995-11-09 | 1996-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-10 | 1999-11-09 | 2000-05-10 | $7700.00 | Window Closed / Lapsed |