Patent US4063873A successfully refreshed from Google Patents.
US4063873A
Expired / Lapsed
US
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Infrared gas burner plate
Assignee: Rinnai Corp
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Filing: 1976-10-19
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Granted: 1977-12-20
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Expires: 1996-10-19
Abstract
Abstract An infrared gas burner plate comprising a plate member of ceramic provided with a large number of burner holes therein distributed over the entire surface thereof. The burner plate has a front surface with a plurality of diamond-shaped concave portions continuously formed in the front surface. Each of the concave portions has a burner hole in the center thereof and a plurality of burner holes arranged around the center hole in an annular arrangement. Two holes are diametrically placed outside the holes in the annular arrangement.
Inventors
- 👤 Susumu Naito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:19
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/12; F23D14/14; F23D14/145
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
79 words
A gas infrared burner plate comprising a plate member of ceramic provided with a large number of burner holes therein distributed over the entire surface thereof, said burner plate having a front surface with daimond-shaped concave portions continuously formed in said front surface, each concave portion having one said burner hole in a center portion, a plurality of said burner holes in an annular arrangement surrounding the center portion and a plurality of said holes outside said annular portion.
Claim 2
Dependent Claim
79 words
A gas infrared burner plate comprising a plate member of ceramic provided with a large number of burner holes therein distributed over the entire surface thereof, said burner plate having a front surface with daimond-shaped concave portions continuously formed in said front surface, each concave portion having one said burner hole in a center portion, a plurality of said burner holes in an annular arrangement surrounding the center portion and a plurality of said holes outside said annular portion.
Claim 3
Dependent Claim
23 words
A gas infrared burner plate according to claim 1, wherein said holes outside said annular portion are in diametric opposition to one another.
Claim 4
Dependent Claim
59 words
A gas infrared burner plate according to claim 1, wherein each of the diamond-shaped concave portions comprises four surfaces extending from the center of the diamond-shaped portion to four edges of the diamond-shaped portion, each diamond-shaped concave portion being equal in size and shape to neighboring portions and having one edge common to a side of a neighboring portion.
Claim 5
Dependent Claim
51 words
A gas infrared burner plate according to claim 1, wherein the burner holes each has a diameter of about 1 mm and the diamond-shaped concave portions each has a depth which is a maximum of two times the diameter of a burner hole, said burner holes being spaced at regular intervals.
Claim 6
Dependent Claim
63 words
A gas infrared burner plate according to claim 1, wherein the diamond-shaped concave portions each has respective opposite interior angles of 60° and 120°, the burner holes in each concave portion comprising one positioned at the center portion, six disposed at regular intervals in the annular arrangement and two disposed outside said annular arrangement and along the long diagonal of the diamond-shaped portion.
Claim 7
Dependent Claim
28 words
A gas infrared burner plate according to claim 5, wherein two of the holes in said annular arrangement are disposed on the short diagonal of the diamond-shaped portion.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-19 | 1981-06-20 | 1981-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-19 | 1985-06-20 | 1985-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-19 | 1989-06-20 | 1989-12-20 | $7700.00 | Window Closed / Lapsed |