Stoves and furnaces – Stove doors and windows – Transparent panel
Reexamination Certificate
2001-07-19
2003-06-24
Bennett, Henry (Department: 3743)
Stoves and furnaces
Stove doors and windows
Transparent panel
Reexamination Certificate
active
06581588
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention is directed to a door of insulating glass for a cooking chamber.
Insulating glass is well known. It is basically composed of at least two individual panes that are joined to one another so that a sealed interspace remains between these individual panes. This interspace is filled with a gas, such as air, inert gas and, potentially, additives, such as drying agents. This gas is responsible for a good insulating property of the glass.
Insulating glass is known from the window industry, but is also employed in the cooking appliance industry and is utilized therein in various forms in thermal cooking appliances. In general, insulating glass panes are introduced into a cooking chamber door frame, so that various door components, such as hinges, locking mechanisms, light sources, for example illuminating the cooking chamber, or the like can be arranged in this cooking chamber door frame. It is problematical in this context that given a traditional cooking chamber door, the attachment of the door components is complicate. In addition, the stability when swinging the cooking chamber door open is inadequate and a comparatively complicated structure is present overall, which results in unsatisfactory price and/or performance ratio.
European Application EP 0 644 378 A2 discloses a cooking appliance comprising a vertically suspended access door that is provided with an outside glazing and comprises an inner door that is arranged on the inside of the access door. The inner door is provided with hinges along an edge of the access door and, with the assistance of the hinges, can be moved into a position that separates the inside door from the access door.
German 833 849 discloses a double door to be employed for a cooking appliance. The door lying closest to the cooking chamber is fashioned as a glass door and is covered by the outer door. The two doors are releasably coupled to one another by a coupling to be operated by the handle of the outer door.
SUMMARY OF THE INVENTION
The present invention is based on the object of providing a door of insulating glass for a cooking chamber for a cooking appliance that can be simply as well as cost-beneficially manufactured and that comprises an uncomplicated structure.
This object is inventively achieved by a door of insulating glass for a cooking chamber of a cooking appliance comprising an insulating glass window composed of at least two individual panes, which are selected from single-pane security glasses, composite glasses and combinations thereof. The panes are arranged to define one interspace between them which can be at least partially insulated by a seal, wherein at least one spacer is arranged for maintaining the interspace and wherein at least one member selected from at least one door component and a pivot point is integrated or can be integrated into the door.
It is thereby provided that the door components are selected from a group consisting of a hinge, a locking mechanism, cables for a light source and combinations thereof.
It is inventively proposed that at least one door component, particularly a hinge, a locking mechanism, a pivot point and combinations thereof, is at least partially accommodated or can be at least partially accommodated in at least one spacer between the individual panes.
It is also provided that the seal comprises at least one recess for at least one door component, particularly a light source, preferably along a common edge of at least two individual panes.
An embodiment of the invention is also characterized by at least one glass member, such as in the form of a glass cylinder with a closed end, which cylinder is positioned in the interspace, preferably joinable to the seal, and is open on one end for the insertion of at least one door component, particularly a light source. The open end is positioned adjacent an edge of the seal so that the interior is freely accessible from the outside of the insulating glass window.
Another embodiment is characterized by at least one spacer between the individual panes that preferably comprises an extruded section fashioned in the form of a passe-partout or channel advantageously on one side or on both sides. It is proposed that the extruded section comprises a cable channel for the light source.
It is also inventively provided that the interspace is at least partially filled with an insulating material or medium selected from air or inert gas with or without an additive like a drying agent or the like.
It is also inventively provided that the insulating glass door is pivotable around a vertical or a horizontal swivel axis by means of pivot points and/or via a hinge.
The invention is thus based on the surprising perception that time and money are saved in the manufacture due to the arrangement of the door components, such as, for example, hinges, locking mechanisms and light sources, with an insulating glass door for a cooking chamber, wherein these are arranged between individual panes of the glass door. The stability when opening and closing the glass door is also improved due to the inventive integration of the pivot point and the interspace between the individual panes of the insulating glass.
Additional features and advantages of the invention will be readily apparent from the following description of the preferred embodiments, the drawings and claims.
REFERENCES:
patent: 5105591 (1992-04-01), Leopold
patent: 5881710 (1999-03-01), Davis et al.
patent: 833 849 (1952-03-01), None
patent: GM 77 06 648 (1977-06-01), None
patent: 42 40 096 (1994-06-01), None
patent: 0 644 378 (1995-03-01), None
patent: 2.113.196 (1972-06-01), None
patent: 2 474 654 (1981-07-01), None
Rabe Hermann
Wiedemann Peter
Winter Willi
Bennett Henry
Dagostino Sabrina
Rational Aktiengesellschaft
Schiff & Hardin & Waite
LandOfFree
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