US3674974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating & fusing device
Assignee: Argus International
•
Filing: 1970-10-09
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Granted: 1972-07-04
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Expires: 1990-10-09
Abstract
Abstract A heating device comprised of an elongated source of radiant energy and a reflector having a concave reflective surface whose cross-sectional configuration is substantially elliptical. The elongated energy source is positioned substantially coincident with the primary focus of the elliptical cylindrical reflector so as to cause radiant energy striking the reflective concave surface to be focused at the image focus of the elliptical surface. The reflector is a cylindrical member having planar highly reflective end portions which act to compensate for end losses and provide substantially uniform intensity of radiation along the entire line image.
Inventors
- 👤 Bernard J Costello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:32
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/005
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
208 words
Heating apparatus comprising: an elongated source of radiant energy; an elongated cylindroidal reflector having a truncated crosssectional configuration, the concave surface of said reflector being highly reflective to the radiant energy emitted from said source; the ends of said reflector being polished plane surfaces arranged substantially normal to said source and extending to the plane of truncation of said reflector; the longitudinal axis of said source being substantially coincident with the primary focus of said reflector whereby said reflector is adapted to focus the radiant energy emitted from said source and impinging upon said reflective surface along the image focus of said reflector to form an image of focused radiation; polished plane surfaces being highly reflective to the radiant energy emitted from said source and herein referred to as ''''blinders,'''' lying substantially in the plane of said ends extending toward or beyond the image focus of said reflector, to obtain a substantially uniform intensity distribution of radiant energy between said end extensions and along said image said ''''blinders'''' being adapted to support said apparatus upon a supporting surface and thereby the plane of truncation of said reflector lies a substantial distance above said supporting surface to facilitate insertion and removal of items to be heated by said apparatus.
Claim 2
Dependent Claim
208 words
Heating apparatus comprising: an elongated source of radiant energy; an elongated cylindroidal reflector having a truncated crosssectional configuration, the concave surface of said reflector being highly reflective to the radiant energy emitted from said source; the ends of said reflector being polished plane surfaces arranged substantially normal to said source and extending to the plane of truncation of said reflector; the longitudinal axis of said source being substantially coincident with the primary focus of said reflector whereby said reflector is adapted to focus the radiant energy emitted from said source and impinging upon said reflective surface along the image focus of said reflector to form an image of focused radiation; polished plane surfaces being highly reflective to the radiant energy emitted from said source and herein referred to as ''''blinders,'''' lying substantially in the plane of said ends extending toward or beyond the image focus of said reflector, to obtain a substantially uniform intensity distribution of radiant energy between said end extensions and along said image said ''''blinders'''' being adapted to support said apparatus upon a supporting surface and thereby the plane of truncation of said reflector lies a substantial distance above said supporting surface to facilitate insertion and removal of items to be heated by said apparatus.
Claim 3
Dependent Claim
13 words
The apparatus of claim 1 wherein the cross-section of said reflector is elliptical.
Claim 4
Dependent Claim
19 words
The apparatus of claim 1 wherein said image is a line of substantially the same dimension as said source.
Claim 5
Dependent Claim
24 words
The heating apparatus of claim 1 wherein the lower edges of said blinders are substantially coplanar with an imaginary plane containing said line image.
Claim 6
Dependent Claim
45 words
The heating apparatus of claim 1 wherein said blinders are spaced a greater distance apart than the spacing between said reflector ends to increase the effective length of the line image beyond said reflector ends without undue loss of intensity uniformity along said line image.
Claim 7
Dependent Claim
32 words
The apparatus of claim 3 wherein said increase in distance between said blinders is a maximum of 1 inch or 15 percent of the distance between said reflector ends, whichever is greater.
Claim 8
Dependent Claim
41 words
The apparatus of claim 1 wherein said blinders are aligned transversely to an imaginary plane coincident with the ends of said reflector adjacent said blinders to form a predetermined angle commensurate with the desired intensity and length of said line image.
Claim 9
Dependent Claim
46 words
The apparatus of claim 1 wherein said blinders are pivotally mounted to said reflector to enable said blinders to be aligned transversely to an imaginary plane coincident with the ends of said reflector adjacent said blinders to adjust the intensity and length of said line image.
References Cited (Backward Citations)
US2221318A
Cited
US2298175A
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US2967603A
Cited
US3283124A
Cited
US3374531A
Cited
US3509317A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |