US4177034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retrofit igniter
Assignee: Robertshaw Controls Co
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Filing: 1977-12-29
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Granted: 1979-12-04
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Expires: 1997-12-29
Abstract
Abstract There is disclosed a bracket and assembly for retrofit conversion of continuous pilot burners to intermittent, on-demand pilot burners. This conversion requires the mounting of a gas ignition electrode in the assembly. The mounting bracket for accomplishing this purpose is a flat metal stamping having a web with distal apertures bearing upstanding peripheral flanges about each aperture, and two pairs of bendable tabs. The bracket is installed with one aperture received about the conventional flame sensor assembly of the pilot burner, and the bendable tabs are bent about the supporting structure to secure the bracket and to support the additional electrode required by this conversion at a predetermined spacing relative to the pilot burner where the electrode tip can be readily bent to the proper air gap for spark ignition.
Inventors
- 👤 Richard E. Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:24
CPC Classifications
F; F23; F23Q; F23Q9/00; F23Q9/02; F23Q9/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
113 words
A bracket for retro-fit conversion of a continuous to an intermittent operating gas pilot burner having a pilot burner and a flame sensor mounted in side-by-side alignment on a support member which comprises: (a) a flat web with first and second spaced-apart distal apertures and upstanding peripheral flanges about said apertures; (b) stiffening rib means in the central portion of said web between, and parallel to the alignment of, said apertures; (c) a pair of bendable tabs laterally projecting from said web adjacent one of said apertures; and (d) a second pair of bendable tabs projecting from opposite side edges of the central portion of said web toward the other of said apertures.
Claim 2
Dependent Claim
113 words
A bracket for retro-fit conversion of a continuous to an intermittent operating gas pilot burner having a pilot burner and a flame sensor mounted in side-by-side alignment on a support member which comprises: (a) a flat web with first and second spaced-apart distal apertures and upstanding peripheral flanges about said apertures; (b) stiffening rib means in the central portion of said web between, and parallel to the alignment of, said apertures; (c) a pair of bendable tabs laterally projecting from said web adjacent one of said apertures; and (d) a second pair of bendable tabs projecting from opposite side edges of the central portion of said web toward the other of said apertures.
Claim 3
Dependent Claim
24 words
The bracket of claim 1 wherein said one of said apertures is of a diameter to receive a mounting sheath surrounding said flame sensor.
Claim 4
Dependent Claim
24 words
The bracket of claim 1 wherein said second pair of bendable tabs project to a predetermined lateral spacing from said other of said apertures.
Claim 5
Dependent Claim
49 words
The bracket of claim 1 in combination with an electrode assembly comprising an insulator sleeve of a diameter to be received in the other of said apertures, an electrode received in one end thereof and an insulated conductor in the other end thereof in electrical continuity to said electrode.
Claim 6
Dependent Claim
130 words
A retrofitted pilot burner assembly comprising: (a) a pilot burner and a flame sensor carried in side-by-side alignment on a support bracket; (b) the bracket of claim 1 overlying the support bracket with said one aperture received about said flame sensor and secured thereto by fastener means engaging said sensor; (c) an electrode assembly comprising an electrode and an insulated conductor in electrical continuity received within an insulator sleeve mounted in the other of said apertures with said electrode bent toward, but separated by a predetermined air gap from, one of said pilot burner and flame sensor; and (d) bendable tabs of said first and second pairs of bendable tabs of said bracket projecting past and folded under the edges of said support member to restrain said member against movement.
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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) | 1982-12-03 | 1983-06-04 | 1983-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-03 | 1987-06-04 | 1987-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-03 | 1991-06-04 | 1991-12-04 | $7700.00 | Window Closed / Lapsed |