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US4077389A Expired / Lapsed US ⏱️ 0.0 years remaining

Pneumatic oven door gasket

Assignee: M Management Tex Ltd
•
Filing: 1976-04-19
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Granted: 1978-03-07
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Expires: 1996-04-19
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Abstract

Abstract A pneumatic gasket adapted to be used in an oven door construction in which the door is adapted to be sealed to an oven surface when the door is closed. The gasket is an elongate extensile elastomeric member with first and second sections. The second section is a hollow member which is sealed at its ends or at other desired locations, the space between each of these sealed points forming a hollow air chamber of substantial volume which will expand when exposed to the temperatures produced by an operating oven. The second section may be sealed to produce the air chambers by adhesives such as a room temperature vulcanizing adhesive or by mechanical means. The second section may be a coextensive flap hingedly secured along one edge of the first section. The gaskets have means connected to the first sections removably to secure them to the oven surface to hold them in place between the oven and the door, while allowing them easily to be removed to replace them or to clean the oven.

Inventors

  • 👤 K. Stuart Vogel

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 03:11
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/02; F24C15/021; Y; Y10; Y10S; Y10S277/00; Y10S277/931

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 114 words
In an oven construction including in combination an oven including a door and a frame having confronting surfaces, and means for sealing the door when closed against the surface of the frame, said means comprising: at least one elongate gasket member of elastomeric material having a first and a second section; means for securing said first section in engagement along one of said confronting surfaces; and said second section including elongate hermetic air chamber means, said chamber means having a substantial volume variable in response to temperature for selective expansion of the second section into sealing engagement between the first section and the second confronting surface when subjected to the heat of said oven.
Claim 2
Dependent Claim 114 words
In an oven construction including in combination an oven including a door and a frame having confronting surfaces, and means for sealing the door when closed against the surface of the frame, said means comprising: at least one elongate gasket member of elastomeric material having a first and a second section; means for securing said first section in engagement along one of said confronting surfaces; and said second section including elongate hermetic air chamber means, said chamber means having a substantial volume variable in response to temperature for selective expansion of the second section into sealing engagement between the first section and the second confronting surface when subjected to the heat of said oven.
Claim 3
Dependent Claim 40 words
The construction as claimed in claim 1 wherein: said securing means include inserts having hook formations secured in said first section of said gasket member; the oven frame has hook receiving means; and said gasket member is an extensile member.
Claim 4
Dependent Claim 20 words
The construction as claimed in claim 1 wherein: said air chamber means are sealed at each end by RTV adhesive.
Claim 5
Dependent Claim 21 words
The construction as claimed in claim 1 wherein: said air chamber means are formed of a plurality of independently sealed sections.
Claim 6
Dependent Claim 27 words
The construction as claimed in claim 1 wherein: said securing means are constructed to enable said gasket member to be removed from said one of said surfaces.
Claim 7
Dependent Claim 24 words
The construction as claimed in claim 1 wherein: said second section is a flap hingedly connected to said first section along one edge thereof.
Claim 8
Dependent Claim 91 words
The construction as claimed in claim 1 wherein: said gasket member is an extensile member; said oven frame has hook receiving means; said securing means include inserts having hook formations secured in said first section by RTV adhesive to enable said gasket member to be removed from said one of said surfaces; and said second section is a hollow bore hingedly connected to said first section along one edge thereof, said hollow bore being sealed by RTV adhesive at least at two separate places to form said air chamber means therebetween.

References Cited (Backward Citations)

GB576206A Cited
US2823660A Cited
US3029805A Cited
US3023466A Cited
US3099259A Cited
US3404675A Cited
US3765400A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1981-03-06 1981-09-05 1982-03-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-03-06 1985-09-05 1986-03-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-03-06 1989-09-05 1990-03-07 $7700.00 Window Closed / Lapsed

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