US3782809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sight glass assembly
Assignee: CYCLOPS IND Inc
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Filing: 1972-02-23
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Granted: 1974-01-01
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Expires: 1992-02-23
Abstract
Abstract An improved sight glass has been devised for an annular lens container featuring a shelf between its two ends. The sight glass is constructed in such a manner that metal corroding contents of reaction vessels do not contact any metal elements of the sight glass. The shelf feature of the sight glass construction also enhances the strength and safety of the entire apparatus.
Inventors
- 👤 L Shropshire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:20
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/007
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
220 words
A sight glass for cooperation with an opening in a vessel, said sight glass comprising: a. An annular lens holding shelf having an inwardly projecting continuous shelf between the two ends of said sleeve, the diameter of one end of said annular lens holding sleeve being in excess of that of the opening in said vessel; b. A lens received within said sleeve and substantially filling the same, but not projecting therebeyond, the level of the lens further being slightly recessed from the level of the end of the lens holding sleeve nearest the wall of the vessel; c. A mounting support having an inwardly projecting annular flange at its outer end and adapted to receive the lens holding sleeve, said support also adapted to secure this lens and lens holding sleeve in fixed engagement with the walls of said reaction vessel and in alignment with said opening such that the end of the lens holding sleeve nearest the wall of said vessel is the end of the lens holding sleeve having a diameter in excess of that of the opening in said vessel; and d. A resilient gasket Mounted around the edge of the opening of the vessel and in contact with the lens in the lens holding sleeve and sealing the space between the opening and the lens.
Claim 2
Dependent Claim
220 words
A sight glass for cooperation with an opening in a vessel, said sight glass comprising: a. An annular lens holding shelf having an inwardly projecting continuous shelf between the two ends of said sleeve, the diameter of one end of said annular lens holding sleeve being in excess of that of the opening in said vessel; b. A lens received within said sleeve and substantially filling the same, but not projecting therebeyond, the level of the lens further being slightly recessed from the level of the end of the lens holding sleeve nearest the wall of the vessel; c. A mounting support having an inwardly projecting annular flange at its outer end and adapted to receive the lens holding sleeve, said support also adapted to secure this lens and lens holding sleeve in fixed engagement with the walls of said reaction vessel and in alignment with said opening such that the end of the lens holding sleeve nearest the wall of said vessel is the end of the lens holding sleeve having a diameter in excess of that of the opening in said vessel; and d. A resilient gasket Mounted around the edge of the opening of the vessel and in contact with the lens in the lens holding sleeve and sealing the space between the opening and the lens.
Claim 3
Dependent Claim
24 words
A sight glass as in claim 1 wherein a resilient gasket is interposed between the shelf of the lens holding sleeve and the lens;
Claim 4
Dependent Claim
37 words
A sight glass as in claim 2 wherein a layer of high shear strength cohesive is interposed between the edges of the lens and the walls of the lens holding sleeve bonding the lens to the sleeve.
Claim 5
Dependent Claim
31 words
A sight glass as in claim 3 wherein a resilient gasket is interposed between and seals the space between the inwardly projecting annular flange of said mounting support and the lens.
Claim 6
Dependent Claim
53 words
A sight glass as in claim 4 wherein the lens comprises at least two discs of tempered glass shielded by a disc of chemically resistant glass, and a layer of non-rigid bond inter-posed between and extending throughout the entire area of each of the opposed faces of said discs to form a laminate;
Claim 7
Dependent Claim
41 words
A sight glass as in claim 5 wherein the chemically resistant glass substantially fills that portion of the lens holding sleeve below the shelf and contacts the resilient gasket interposed between the shelf of the lens holding sleeve and the lens;
Claim 8
Dependent Claim
25 words
A sight glass as in claim 6 wherein the lens and lens holding sleeve are in fixed engagement with a nozzle opening on the vessel.
Claim 9
Dependent Claim
25 words
A sight glass as in claim 6 wherein the lens and lens holding sleeve are in fixed engagement with a welding pad on the vessel.
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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |