Patent US4898154A successfully refreshed from Google Patents.
US4898154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable fitting for fireplace insert flue connection
Assignee: RICHISON DAVID E
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Filing: 1988-10-03
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Granted: 1990-02-06
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Expires: 2008-10-03
Abstract
Abstract An adjustable fitting for directly connecting a wood burning insert for a masonry fireplace to a vent pipe positioned within a flue liner of the fireplace chimney is made up of an insert connector having first and second legs which are substantially perpendicular to one another. Thr first leg of the insert connector is vertically oriented when the fitting is in place and is sized to engage a flue gas outlet of a wide variety of wood burning inserts. A vent pipe connector completes the adjustable fitting and also has first and second legs which are substantially perpendicular to one another. The first leg of the vent pipe connector is vertically oriented when the fitting is in use and is sized to engage a lowermost end of the vent pipe. The second legs of the insert connector and the vent pipe connector are formed such that they can be telescopically interfitted to one another to adjust the spacing between the first legs of the connectors and thereby adapt the fitting to a large variety of inserts and fireplaces.
Inventors
- 👤 David E. Richison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:15
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/18; F24B1/1806
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
195 words
A horizontally adjustable fitting for connecting a wood burning insert for a masonry fireplace to a vent pipe positioned within the flue liner of the fireplace chimney, said masonry fireplace having a firebox recess including a rear wall which converges upwardly and forwardly toward a front wall, said horizontally adjustable fitting extending through a central portion of said rear wall and comprising; an insert connector having first and second legs which are substantially perpendicular to one another, said first leg being vertically oriented when said horizontally adjustable fitting is in use and sized to engage a flue gas outlet of said wood burning insert; and a vent pipe connector having first and second legs which are substantially perpendicular to one another, said first leg being vertically oriented when said horizontally adjustable fitting is in use and sized to engage a lowermost end of said vent pipe, the second legs of said insert connector and said vent pipe connector being formed such that they can be telescopically interfitted to one another to adjust the spacing between the first legs of said connectors to adapt said horizontally adjustable fitting to a large variety of inserts and fireplaces.
Claim 2
Dependent Claim
195 words
A horizontally adjustable fitting for connecting a wood burning insert for a masonry fireplace to a vent pipe positioned within the flue liner of the fireplace chimney, said masonry fireplace having a firebox recess including a rear wall which converges upwardly and forwardly toward a front wall, said horizontally adjustable fitting extending through a central portion of said rear wall and comprising; an insert connector having first and second legs which are substantially perpendicular to one another, said first leg being vertically oriented when said horizontally adjustable fitting is in use and sized to engage a flue gas outlet of said wood burning insert; and a vent pipe connector having first and second legs which are substantially perpendicular to one another, said first leg being vertically oriented when said horizontally adjustable fitting is in use and sized to engage a lowermost end of said vent pipe, the second legs of said insert connector and said vent pipe connector being formed such that they can be telescopically interfitted to one another to adjust the spacing between the first legs of said connectors to adapt said horizontally adjustable fitting to a large variety of inserts and fireplaces.
Claim 3
Dependent Claim
50 words
A horizontally adjustable fitting for connecting a wood burning insert for a masonry fireplace to a vent pipe positioned within the flue liner of the fireplace as claimed in claim 1 wherein the second leg of said vent pipe connector telescopically interfits into the second leg of said insert connector.
Claim 4
Dependent Claim
44 words
A horizontally adjustable fitting for connecting a wood burning insert for a masonry fireplace to a vent pipe positioned within the flue liner of the fireplace as claimed in claim 2 wherein the second legs of said connectors are substantially rectangular in cross section.
Claim 5
Dependent Claim
43 words
A horizontally adjustable fitting for connecting a wood burning insert for a masonry fireplace to a vent pipe positioned within the flue liner of the fireplace chimney as claimed in claim 3 wherein said connectors are made of 26 gauge 316 stainless steel.
Claim 6
Dependent Claim
168 words
A horizontally adjustable fitting for connecting a wood burning insert for a masonry fireplace to a vent pipe positioned within the flue liner of the fireplace chimney, said masonry fireplace having a firebox recess including a rear wall which converges upwardly and forwardly toward a front wall, said horizontally adjustable fitting extending through a central portion of said rear wall and comprising; a generally z-shaped tubular member having an upper bar, a lower bar and an interconnecting bar therebetween and being positioned on its side when in use, the upper bar of said z-shaped member pointing vertically downward and being sized to engage a flue gas outlet of said insert, the lower bar of said z-shaped member pointing vertically upward and being sized to engage a lower end of said vent pipe, and the interconnecting bar of said z-shaped member being telescopically extendable to adjust the horizontal distance between said upper and lower bars to adapt said horizontally adjustable fitting to a large variety of inserts and fireplaces.
Claim 7
Dependent Claim
168 words
A horizontally adjustable fitting for connecting a wood burning insert for a masonry fireplace to a vent pipe positioned within the flue liner of the fireplace chimney, said masonry fireplace having a firebox recess including a rear wall which converges upwardly and forwardly toward a front wall, said horizontally adjustable fitting extending through a central portion of said rear wall and comprising; a generally z-shaped tubular member having an upper bar, a lower bar and an interconnecting bar therebetween and being positioned on its side when in use, the upper bar of said z-shaped member pointing vertically downward and being sized to engage a flue gas outlet of said insert, the lower bar of said z-shaped member pointing vertically upward and being sized to engage a lower end of said vent pipe, and the interconnecting bar of said z-shaped member being telescopically extendable to adjust the horizontal distance between said upper and lower bars to adapt said horizontally adjustable fitting to a large variety of inserts and fireplaces.
Claim 8
Dependent Claim
46 words
A horizontally adjustable fitting for connecting a wood burning insert for a masonry fireplace to a vent pipe positioned within the flue liner of the fireplace chimney as claimed in claim 5 wherein the interconnecting bar of said z-shaped member is substantially rectangular in cross section.
Claim 9
Dependent Claim
43 words
A horizontally adjustable fitting for connecting a wood burning insert for a masonry fireplace to a vent pipe positioned within the flue liner of the fireplace chimney as claimed in claim 6 wherein said fitting is made of 26 gauge 316 stainless steel.
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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) | 1993-02-05 | 1993-08-07 | 1994-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-05 | 1997-08-07 | 1998-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-05 | 2001-08-07 | 2002-02-06 | $7700.00 | Window Closed / Lapsed |