Patent US3746431A successfully refreshed from Google Patents.
US3746431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sight glass assembly
Assignee: Individual
•
Filing: 1971-04-29
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Granted: 1973-07-17
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Expires: 1991-04-29
Abstract
Abstract A sight glass assembly generally including a housing structure having an opening therethrough, the opening having an enlarged section providing a shoulder, a face plate having an opening registered with the opening in the housing structure, detachably mounted on the housing structure in opposed relation to the shoulder, a lens disposed tin the enlarged section of the opening in the housing structure and interposed between the shoulder and the face plate, sealing means disposed in the enlarged section of the opening in the housing structure, between the lens and the housing structure, and means engageable with the sealing means for compressing the sealing means against the face plate to expand the sealing means laterally thereby providing a positive seal between the lens and the housing structure.
Inventors
- 👤 C Meginnis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:02
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
140 words
A sight glass assembly comprising a housing structure having an opening therethrugh, said opening having an enlarged section providing a shoulder, a face plate having an opening registered with the opening in said ousing structure, detachably mounted on said housing structure in opposed relation to said shoulder, a lens disposed in the enlarged section of the opening in said housing structure and interposed between said shoulder and said face plate, said face plate having a sub-stantially planar surface supporting said lens and engageable with said housing structure, sealing means disposed in the enlarged section of the opening in said housing structure, and means engageable with said sealing means for compressing said sealing means against said substantially planar surface of said face plate to expand said sealing means laterally thereby providing a positive seal between said lens and said housing structure.
Claim 2
Dependent Claim
140 words
A sight glass assembly comprising a housing structure having an opening therethrugh, said opening having an enlarged section providing a shoulder, a face plate having an opening registered with the opening in said ousing structure, detachably mounted on said housing structure in opposed relation to said shoulder, a lens disposed in the enlarged section of the opening in said housing structure and interposed between said shoulder and said face plate, said face plate having a sub-stantially planar surface supporting said lens and engageable with said housing structure, sealing means disposed in the enlarged section of the opening in said housing structure, and means engageable with said sealing means for compressing said sealing means against said substantially planar surface of said face plate to expand said sealing means laterally thereby providing a positive seal between said lens and said housing structure.
Claim 3
Dependent Claim
18 words
A sight glass assembly according to claim 1, wherein said face plate consists of a corrosive resistance material.
Claim 4
Dependent Claim
19 words
A sight glass assembl according to claim 1, wherein said face plate is coated with a corrosive resistance material.
Claim 5
Dependent Claim
34 words
A sight glass assembly according to claim 1, including a corrosive resistant liner permanently disposed on the wall of said enlarged section of said opening, interposed between said sealing means and said housing structure.
Claim 6
Dependent Claim
48 words
A sight glass assembly according to claim 1, wherein said compression means includes a rigid member disposed in the enlarged section of the housing structure, and enageable witl said sealing means, and wherein said housing structure includes threaded openings provided with set screws engageable with said rigid member.
Claim 7
Dependent Claim
32 words
A sight glass assembly according to claim 1, wherein the wall of the enlarged section of said opening in said housing structure is provided with a coating of a corrosive resistant material.
Claim 8
Dependent Claim
31 words
A sight Glass assembly according to claim 1, wherein the portion of said housing structure engaged by said sealing means and said face plate are coated with a corrosive resistant material.
Claim 9
Dependent Claim
15 words
A sight glass assembly according to claim 7, wherein said corrosive resistant material is glass.
Claim 10
Dependent Claim
84 words
A sight glass assembly according to claim 1, wherein the opening in said housing structure, the enlarged section of the opening in said housing structure and said lens are circular, and wherein said face plate and said sealing means are annular, whereby upon compressing said sealing means against said face plate, said sealing means is expanded radially relative to the axis of said lens to provide a positive seal between said lens and said housing structure, and said lens is placed in radial compression.
Claim 11
Dependent Claim
18 words
A sight glass assembly according to claim 9, wherein said face plate consists of a corrosive resistant material.
Claim 12
Dependent Claim
19 words
A sight glass assembl/ according to claim 9, wherein said face plate is coated with a corrosive resistant material.
Claim 13
Dependent Claim
35 words
A sight glass assembly according to claim 9, including a corrosive resistant annular liner permanently disposed on the wall of said enlarged section of said opening interposed between said sealing means and said housing structure.
Claim 14
Dependent Claim
31 words
A sight glass assembly according to claim 9,wherein the wall of the enlarged section of said opening in said housing structure is provided with a coating of a corrosive resistant material.
Claim 15
Dependent Claim
31 words
A sight glass assembly according to claim 9, wherein the portion of said housing structure engaged by said sealing means and said face plate are coated with a corrosive resistant material.
References Cited (Backward Citations)
GB141781A
Cited
US2942469A
Cited
US3340890A
Cited
US3345872A
Cited
US3438540A
Cited
US3625390A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |