Patent US2234861A successfully refreshed from Google Patents.
US4026264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable fireplace heating unit
Assignee: Individual
•
Filing: 1974-12-09
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Granted: 1977-05-31
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Expires: 1994-12-09
Abstract
Abstract A portable heating unit which may quickly and easily be installed in an existing fireplace construction is described. The heating unit, with a controlled adaptable damper system, greatly increases the burning efficiency of the fuel and is designed to provide a circulating warm air stream for heating a room. The heating unit can quickly and easily be moved from the fireplace opening to restore the fireplace to its original operation when the extra heat is no longer needed. The portable heating unit may also be installed in a self-contained enclosure. This enclosure incorporates a triangular-shaped flue that interconnects with a nearby chimney. The triangular flue is constructed so as to connect with a chimney to the right or to the left of the heating unit enclosure thereby allowing one chimney to service more than one heating unit at the same floor level. Furthermore, a radiator may be installed within the portable heating unit and interconnected to the hot water heating system of a home so as to provide alternate heating of the hot water system when the home furnace is inoperable. The heating unit may also be converted to an outdoor barbecue when used without a self-contained enclosure.
Inventors
- 👤 Joseph Henriques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:22
CPC Classifications
F; F24; F24B; F24B7/00; F24B7/007; F24B1/00; F24B1/18; F24B1/1806; F24B1/185; F24B5/00; F24B5/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
362 words
A portable heating device for use in a standard fireplace opening in conjunction with an aperture permanent damper frame of said standard fireplace, the original fireplace damper plate opened to its furthest upstanding position with the remaining portion of the original fireplace damper assembly disconnected from said original fireplace damper plate, said heating device comprising: (A) housing means, a portion of which forms a heating chamber having an apertured region in the upper portion of said heating chamber, said housing means incorporating means for positioning the housing within the standard fireplace opening inwardly spaced from the masonry wall thereof, said housing further incorporating an openable front portion communicating with the heating chamber for placement of fuel therein; (B) a closeable damper assembly movably mounted in said upper apertured portion of the heating chamber for connecting the heating chamber to the fireplace flue, said damper assembly incorporating, (1) an adapter plate dimensioned to cover and block a pre-existing damper opening in said permanent damper frame having a central aperture formed therein; (2) an aperture adapter assembly dimensioned to cover and block a portion of the central aperture of the adapter plate, comprising: (a) an aperture adapter frame dimensioned to contact a portion of the adapter plate, having an aperture substantially equal to and aligned with the central aperture of the adapter plate; and (b) an aperture adapter plate positionably mountable to the aperture adapter frame generating a second central aperture; (3) a damper flue conduit dimensioned to extend through said second central aperture and having: (a) a lower entrance portal juxtaposed to the apertured region in the upper portion of the heating chamber and (b) an upper exit portal opening into the fireplace flue; (4) a damper plate movably mounted to said housing means at the upper portion of said housing means; and (5) means for manually positioning said damper plate; and (C) means for admitting air into the heating chamber; whereby an air convection space is created between the outer portion of the enclosed heating chamber and the masonry fireplace wall so that air entering the convection space is circulated back past the housing and outside the fireplace for space heating purposes.
Claim 2
Dependent Claim
362 words
A portable heating device for use in a standard fireplace opening in conjunction with an aperture permanent damper frame of said standard fireplace, the original fireplace damper plate opened to its furthest upstanding position with the remaining portion of the original fireplace damper assembly disconnected from said original fireplace damper plate, said heating device comprising: (A) housing means, a portion of which forms a heating chamber having an apertured region in the upper portion of said heating chamber, said housing means incorporating means for positioning the housing within the standard fireplace opening inwardly spaced from the masonry wall thereof, said housing further incorporating an openable front portion communicating with the heating chamber for placement of fuel therein; (B) a closeable damper assembly movably mounted in said upper apertured portion of the heating chamber for connecting the heating chamber to the fireplace flue, said damper assembly incorporating, (1) an adapter plate dimensioned to cover and block a pre-existing damper opening in said permanent damper frame having a central aperture formed therein; (2) an aperture adapter assembly dimensioned to cover and block a portion of the central aperture of the adapter plate, comprising: (a) an aperture adapter frame dimensioned to contact a portion of the adapter plate, having an aperture substantially equal to and aligned with the central aperture of the adapter plate; and (b) an aperture adapter plate positionably mountable to the aperture adapter frame generating a second central aperture; (3) a damper flue conduit dimensioned to extend through said second central aperture and having: (a) a lower entrance portal juxtaposed to the apertured region in the upper portion of the heating chamber and (b) an upper exit portal opening into the fireplace flue; (4) a damper plate movably mounted to said housing means at the upper portion of said housing means; and (5) means for manually positioning said damper plate; and (C) means for admitting air into the heating chamber; whereby an air convection space is created between the outer portion of the enclosed heating chamber and the masonry fireplace wall so that air entering the convection space is circulated back past the housing and outside the fireplace for space heating purposes.
Claim 3
Dependent Claim
88 words
The portable heating device defined in claim 1, wherein the aperture adapter assembly and the adapter plate are positioned and held beneath the damper frame by telescoping support means extending from the masonry floor of a standard fireplace to the lower surface of the aperture adapter assembly, and positioned near the two sidewalls of the standard fireplace so as to secure the aperture adapter assembly and plate to the existing damper frame while allowing the self-contained heating device to be readily installed and removed from the standard fireplace.
Claim 4
Dependent Claim
20 words
The portable heating device defined in claim 2, wherein said telescoping support means comprises a pair of telescoping slotted T-members.
Claim 5
Dependent Claim
43 words
The portable heating device defined in claim 1 wherein the damper plate is of a smaller cross-sectional area than the damper flue conduit, thereby preventing smoke buildup within the portable heating device even when the damper plate is in the fully closed position.
Claim 6
Dependent Claim
43 words
A portable heating device as defined in claim 1, wherein the openable front portion of the housing means incorporates pivotal glass doors which may be opened to supply fuel to the heating chamber and closed to prevent escape of soot, ashes and smoke.
Claim 7
Dependent Claim
21 words
A portable heating device as defined in claim 5, wherein the glass doors are removably pivotally supported by the housing means.
Claim 8
Dependent Claim
26 words
A portable heating device as defined in claim 6, wherein each glass door is pivotally secured to the housing by a coaxial pair of pivot pins.
Claim 9
Dependent Claim
63 words
A portable heating device as defined in claim 1, wherein the openable front portion of the housing means incorporates pivotally mounted metal doors which may be opened to supply fuel to the heating chamber and closed to prevent the escape of soot, ashes and smoke, said doors incorporating a substantially flat grillwork spaced therefrom for providing further air convection by the heating device.
Claim 10
Dependent Claim
59 words
A portable heating device as defined in claim 1, wherein the housing means inorporates an outer framework spaced from and substantially surrounding said heating chamber, a frontal screen interconnected with the inner periphery of said outer framework, and a portal fascia interconnected at its outer periphery with the frontal screen and at its inner periphery with the heating chamber.
Claim 11
Dependent Claim
62 words
A portable heating device as defined in claim 1 wherein the aperture adapter plate of the adapter assembly has a pair of parallel slots, and wherein said aperture adapter assembly incorporates a pair of bolts passing through said slots into said aperture adapter frame so as to allow sliding linear positioning of the aperture adapter plate with respect to the adapter frame.
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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) | 1980-05-30 | 1980-11-29 | 1981-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-30 | 1984-11-29 | 1985-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-30 | 1988-11-29 | 1989-05-31 | $7700.00 | Window Closed / Lapsed |