US4074676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water heater-fireplace grate
Assignee: Individual
•
Filing: 1976-05-28
•
Granted: 1978-02-21
•
Expires: 1996-05-28
Abstract
Abstract The invention relates to a fireplace grate having water passage means therethrough for connection in a water heating system to utilize fireplace heat to heat water, and includes a plurality of generally coplanar substantially horizontal bed pipes for supporting burning fuel, an ingress and egress pipe extending laterally across and connected in fluid communication to at least certain of the bed pipes for passing fluid to and receiving fluid from the latter, rear pipes upstanding from the bed pipes and connected in fluid communication with at least said certain bed pipes, and heat collection means extending from the rear pipes spacedly over the bed pipes and having fluid passage means communicating with the rear pipes, so that fluid is adapted to be heated upon passage through the grate.
Inventors
- 👤 Donald Richard Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:07
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/18; F24B1/183
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
178 words
A water heater-fireplace grate comprising a plurality of forwardly and rearwardly extending generally horizontal bed pipes disposed in generally coplanar relation and providing a fuel supply bed, an ingress and egress pipe extending laterally across the forward ends of said bed pipes and in fluid communication with at least certain and less than all of the latter for feeding fluid thereto and in fluid communication with other of the bed pipes for receiving fluid therefrom, a plurality of rear pipes upstanding from the rear regions of said bed pipes, certain of said rear pipes being in fluid communication with said certain bed pipes to receive fluid therefrom and other of said rear pipes being in fluid communication with said other of said bed pipes to feed fluid thereto, and heat collection means extending from said rear pipes in spaced relation over said bed pipes, said heat collection means having fluid passageway means communicating between said certain rear pipes for passing fluid between said certain bed pipes, whereby fluid is adapted to be heated upon passage through said grate.
Claim 2
Dependent Claim
178 words
A water heater-fireplace grate comprising a plurality of forwardly and rearwardly extending generally horizontal bed pipes disposed in generally coplanar relation and providing a fuel supply bed, an ingress and egress pipe extending laterally across the forward ends of said bed pipes and in fluid communication with at least certain and less than all of the latter for feeding fluid thereto and in fluid communication with other of the bed pipes for receiving fluid therefrom, a plurality of rear pipes upstanding from the rear regions of said bed pipes, certain of said rear pipes being in fluid communication with said certain bed pipes to receive fluid therefrom and other of said rear pipes being in fluid communication with said other of said bed pipes to feed fluid thereto, and heat collection means extending from said rear pipes in spaced relation over said bed pipes, said heat collection means having fluid passageway means communicating between said certain rear pipes for passing fluid between said certain bed pipes, whereby fluid is adapted to be heated upon passage through said grate.
Claim 3
Dependent Claim
48 words
A water heater-fireplace grate according to claim 1, in combination with an obstruction in said ingress and egress pipe between its connection to said certain and other bed pipes, for passing all fed fluid through said certain bed pipes and withdrawing all fluid through said other bed pipes.
Claim 4
Dependent Claim
38 words
A water heater-fireplace grate according to claim 2, said ingress and egress pipe being connected to the forward ends of said bed pipes and having its ends extending beyond the bed pipes for connection to a fluid system.
Claim 5
Dependent Claim
72 words
A water heater-fireplace grate according to claim 1, said heat collection means comprising a pair of parallel connected upper pipes extending laterally across the upper regions of and connected in fluid communication with said certain and other rear pipes for passing fluid therebetween, said upper pipes being located directly over said bed pipes, and heat conductive fins disposed generally vertically on said uper pipes for receiving maximum heat without appreciably obstructing draft.
Claim 6
Dependent Claim
52 words
A water heater-fireplace grate according to claim 4, in combination with legs depending from said bed pipes for supporting the latter in spaced relation over a hearth; said bed, ingress and egress and rear pipes being fabricated of heat conductive material for transferring heat from a fire to fluid within said pipes.
Claim 7
Dependent Claim
43 words
A water heater-fireplace grate according to claim 5, said ingress and egress pipe being connected to all of said bed pipes, and said upper pipe being connected to all of said rear pipes for maximum heat transfer through said pipes to contain fluid.
References Cited (Backward Citations)
US114280A
Cited
US463061A
Cited
US2172711A
Cited
US670066A
Cited
US1252176A
Cited
US1426976A
Cited
US2052643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |