Fireplace heat loss shield
US4072140A · kind A · utility
Inventor
Key dates
| Filing date | Dec 10, 1976 |
| Grant date | Feb 7, 1978 |
| Priority date | — |
| Expiry date | Dec 10, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S160/09
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A fireplace heat loss shield having a fabric cover of woven fire resistant material that is emplaceable over the fireplace opening to inhibit loss of heated room air. The cover has pockets sewn along all four edges thereof, into which a rigid, rectangular frame is emplaced. The frame maintains the rectangular shape of the cover, and supports the cover in an upright position over the fireplace opening by horizontally extending legs which are rigidly attached to the supporting portion of the frame, and which extend horizontally outward from openings at the bottom corners of the cover. Draft up the chimney of the fireplace maintains the cover firmly against the edges of the fireplace opening, and air vent openings may be provided in the cover to allow some ventilation of smoldering material in the fireplace area and to relieve the inward suction on the fireplace cover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.