Patent US672171A successfully refreshed from Google Patents.
Patent US4927501A successfully refreshed from Google Patents.
US4927501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oven door
Assignee: RAG AG
•
Filing: 1988-07-28
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Granted: 1990-05-22
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Expires: 2008-07-28
Abstract
Abstract A metal shield is for an oven which has an interior, a door opening which is surrounded by a door frame, and a door for extending across the door opening. The door is for making sealing contact with the door frame. The metal shield includes a plurality of generally parallel elongated metal members which combine to form an array of elongated metal members substantially lying within a plane. The array of elongated metal members is disposed within the interior of the oven inwardly of the door frame and inwardly of the door when the door is in sealing contact with the door frame. The array of elongated metal members extends generally transversely to the interior of the oven with the plane being generally parallel to the door frame.
Inventors
- 👤 Wolfgang Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:41
CPC Classifications
C; C10; C10B; C10B25/00; C10B25/02; C10B25/06
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
140 words
An oven door assembly comprising a peripheral door frame, a peripheral sealing means secured to said door frame for sealing an oven door opening and a metal heat shield, said metal heat shield comprising: a multiplicity of elongated metal members having elongated axes; means for retaining said elongated metal members in at least one array in which said elongated axes are disposed generally parallel to each other within a plane, said retaining means extending across said elongated metal members at spaced points along the axes of said members and maintaining a space between adjacent members of said elongated metal members in the array; and means for supporting said array of elongated metal members on said sealing means so as to extend parallel to the door frame and sealing means and thereby shield the same from heat generated in an oven.
Claim 2
Dependent Claim
140 words
An oven door assembly comprising a peripheral door frame, a peripheral sealing means secured to said door frame for sealing an oven door opening and a metal heat shield, said metal heat shield comprising: a multiplicity of elongated metal members having elongated axes; means for retaining said elongated metal members in at least one array in which said elongated axes are disposed generally parallel to each other within a plane, said retaining means extending across said elongated metal members at spaced points along the axes of said members and maintaining a space between adjacent members of said elongated metal members in the array; and means for supporting said array of elongated metal members on said sealing means so as to extend parallel to the door frame and sealing means and thereby shield the same from heat generated in an oven.
Claim 3
Dependent Claim
19 words
The door assembly of claim 1, wherein the axes of said elongated metal members in said array extend horizontally.
Claim 4
Dependent Claim
19 words
The door assembly of claim 1, wherein the axes of said elongated metal members in said array extend vertically.
Claim 5
Dependent Claim
34 words
The door assembly of claim 1, wherein said peripheral sealing means includes a central portion extending across and inwardly of the door frame, and said supporting means secures said array to said central portion.
Claim 6
Dependent Claim
34 words
The door assembly of claim 1, wherein said retaining means comprises mounting retainers for loosely mounting said elongated metal members in said array such that the members are relatively movable along said elongated axes.
Claim 7
Dependent Claim
35 words
The door assembly of claim 1, wherein said retaining means comprises mounting retainers for loosely mounting said elongated metal members in said array such that adjacent members are relatively movable with respect to each other.
Claim 8
Dependent Claim
30 words
The door assembly of claim 1, wherein said elongated metal members have opposite ends, and said retaining means extends across said elongated metal members at each of said opposite ends.
Claim 9
Dependent Claim
40 words
The door assembly of claim 7, wherein each of said elongated metal members has a hole extending transversely therethrough at said opposite ends, and said retaining means comprises a rod extending through said holes at each of the opposite ends.
Claim 10
Dependent Claim
26 words
The door assembly of claim 7, wherein said retaining means includes members at least partially surrounding each of said elongated metal members at the opposite ends.
Claim 11
Dependent Claim
14 words
The door assembly of claim 1, wherein said elongated metal members are rectangular bars.
Claim 12
Dependent Claim
11 words
The door assembly of claim 10, wherein said bars are hollow.
Claim 13
Dependent Claim
21 words
The door assembly of claim 1, wherein said elongated metal members are circular bars having a diameter of about 10-30 mm.
Claim 14
Dependent Claim
29 words
The door assembly of claim 1, wherein said elongated metal members are bands having a rectangular cross-section of about 4-10 mm thick and up to about 100 mm wide.
Claim 15
Dependent Claim
42 words
The door assembly of claim 1, wherein said at least one array comprises at least two arrays of said elongated metal members sequentially disposed and supported on said sealing means so as to extend parallel to the door frame and sealing means.
Claim 16
Dependent Claim
34 words
The door assembly of claim 14, wherein the axes of said elongated metal members in each of said arrays extend horizontally and each of said arrays has a vertical height of about 200-400 mm.
Claim 17
Dependent Claim
53 words
The door assembly of claim 14, wherein said peripheral sealing means includes a central portion extending across the door frame, said central portion comprising an outer plate means and an inner plate means defining a hollow interior, and said supporting means secures said arrays of elongated metal members to said inner plate means.
Claim 18
Dependent Claim
55 words
The door assembly of claim 16, wherein said inner plate means comprises at least two sequential inner plate sections having a space therebetween defining a gas inlet into the hollow interior for removing generated oven gases, and each of said inner plate sections includes said supporting means for supporting a respective one of said arrays.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-21 | 1993-11-20 | 1994-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-21 | 1997-11-20 | 1998-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-21 | 2001-11-20 | 2002-05-22 | $7700.00 | Window Closed / Lapsed |