Patent EP0047996A2 successfully refreshed from Google Patents.
EP0047996A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Protective device for the glass pane of an open hearth fireplace
Assignee: Individual
•
Filing: 1981-09-11
•
Granted: —
•
Expires: 2001-09-11
Abstract
Abstract The invention relates to a device intended for protecting from the flame action a glass pane mounted on the hearth of a fireplace for the purpose of restricting the flow of air being drawn from the surroundings through the flue under natural draft conditions. The technical problem to be solved is that of providing a simple and economically convenient device which can prevent the glass pane from overheating and blackening over its clear portion owing to the tarry residues of combustion. The solution to the problem is provided by a protective device, which comprises air conveying shaped interspaces adapted to convey air parallel to and in close contact with the glass pane (2) surface facing the fireplace (1) interior, and to create, by virtue of the draft action applied by the flue, laminar airflows which creep along the inner side of the glass pane (2).
Inventors
- 👤 Hans Georg Fauser
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 11:53
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/18; F24B1/191; F24B1/192
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
55 words
A protective device for the glass pane of an open hearth fireplace, which comprises at least one clear plate (3) removably engaged with the fireplace (1) aperture, characterized in that it comprises means effective to convey air parallel to and in close contact with the surface of said plate (3) facing the fireplace (1) interior.
Claim 2
Dependent Claim
55 words
A protective device for the glass pane of an open hearth fireplace, which comprises at least one clear plate (3) removably engaged with the fireplace (1) aperture, characterized in that it comprises means effective to convey air parallel to and in close contact with the surface of said plate (3) facing the fireplace (1) interior.
Claim 3
Dependent Claim
39 words
A protective device according to Claim 1, characterized in that said conveying means comprises shaped interspaces (4) adapted for directing streams of laminar flow air to sweep across the inner surface of said plate (3) in close contact therewith.
Claim 4
Dependent Claim
45 words
A protective device according to Claim 2, characterized in that the air flowing through said shaped interspaces (4) is drawn in from the surrounding atmosphere of the room or enclosed space where the fireplace (1) is installed under the action of the flue natural draft.
Claim 5
Dependent Claim
41 words
A protective device according to Claim 3, characterized in that said shaped interspaces (4) extend parallel to the edges of said plate (3) and are constructed to direct the related laminar airflow toward the inner surface of that said plate (3).
Claim 6
Dependent Claim
41 words
A protective device according to Claim 4, characterized in that said shaped interspaces (4) are provided at the aperture of the fireplace (1) hearth at least between the edges of said plate (3) and the fireplace walls (1a) defining said hearth.
Claim 7
Dependent Claim
51 words
A protective device according to Claim 4, and intended for the glass pane of an open hearth fireplace (1) wherein at least one said clear plate (3) and a framework (5) supporting said plate (3) are provided, characterized in that said shaped interspaces (4) are provided at least at said frame.
Claim 8
Dependent Claim
58 words
A protective device according to Claim 6, characterized in that said framework (5) is defined by a first peripheral frame (5a) adapted for engagement in substantial airtight relationship with the fireplace walls (la) defining said hearth, and in that said first peripheral frame (5a) supports said plate (3) through spacer elements (6) adapted to promote said laminar airflow.
Claim 9
Dependent Claim
74 words
A protective device according to Claim 6, characterized in that said framework (5) is defined by a first peripheral frame (5a) adapted for engagement in substantial airtight relationship with the fireplace sidewalls (1a), and by a second frame (5b) encircling the edges of that said plate (3), and in that said first and second frames (5a - 5b) are held apart by spacer elements (6) and profiled to define said shaped interspaces (4) therebetween.
Claim 10
Dependent Claim
49 words
A protective device according to Claim 6 and characterized in that said shaped interspaces (4) provided at least at said framework (5) and spacer elements (6) have the profile thereof defined by said first frame (5a) extending along the surface of said plate (3) facing the fireplace (1) interior.
Claim 11
Dependent Claim
45 words
A protective device according to Claim 9, characterized in that said first frame (5a) is formed with an end edge (7) folded toward the inner surface of said plate (3), said folded edge (7) defining an airflow outlet region in the shape of a nozzle.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.