US4113137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera housing optical sealing method and device
Assignee: Cohu Inc
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Filing: 1977-09-21
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Granted: 1978-09-12
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Expires: 1997-09-21
Abstract
Abstract A new and improved device and method for hermetically sealing a lens window to a camera housing, which permits removal of the window from a pressurized housing without danger to the technician due to rapid or explosive decompression. The device comprises a unique combination of an O-ring seal and a square or rectangular cross-section face seal ring with two snap-rings in such a manner that removal of the first snap-ring causes controlled decompression of the housing, while the lens window is retained by the second snap-ring.
Inventors
- 👤 Walter Jamison Wind
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:26
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/16; G02B23/22; G02B7/00; G02B7/007; G03; G03B; G03B17/00; G03B17/02; G03B17/08; Y; Y10; Y10S; Y10S277/00; Y10S277/925
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
82 words
An improved camera container sealing device of the type in which the container is closed by a removable end plate, wherein the improvement comprises: a seal retainer disposed within said container in close proximity to the inner surface of said container and end plate; a substantially rectangular cross-section seal disposed between said end plate and said seal retainer; a snap-ring groove disposed in the wall of said container; and at least two snap-rings fitted within said groove to retain said end plate.
Claim 2
Dependent Claim
82 words
An improved camera container sealing device of the type in which the container is closed by a removable end plate, wherein the improvement comprises: a seal retainer disposed within said container in close proximity to the inner surface of said container and end plate; a substantially rectangular cross-section seal disposed between said end plate and said seal retainer; a snap-ring groove disposed in the wall of said container; and at least two snap-rings fitted within said groove to retain said end plate.
Claim 3
Dependent Claim
24 words
The container sealing device according to claim 1 further comprising a second seal of substantially circular cross-section disposed between said container and said retainer.
Claim 4
Dependent Claim
13 words
The sealing device according to claim 1 wherein said seal is substantially square.
Claim 5
Dependent Claim
88 words
An improved device for sealing a removable end plate to a camera container having a shoulder and an enlarged end opening for accepting said end plate, comprising: a seal adapted to fit within said enlarged end and seat on said shoulder and disposed between said shoulder and said end plate; a groove disposed in the wall of said container and located in proximity to the outer surface of said end plate; and at least two snap-rings fitted within said groove for retaining said end plate against said seal.
Claim 6
Dependent Claim
88 words
An improved device for sealing a removable end plate to a camera container having a shoulder and an enlarged end opening for accepting said end plate, comprising: a seal adapted to fit within said enlarged end and seat on said shoulder and disposed between said shoulder and said end plate; a groove disposed in the wall of said container and located in proximity to the outer surface of said end plate; and at least two snap-rings fitted within said groove for retaining said end plate against said seal.
Claim 7
Independent Claim
42 words
A method for sealing a camera container, which comprises the steps of: installing a first seal into said container; compressing the first seal with an end plate; inserting a first end plate retaining ring; and inserting a second end plate retaining ring.
Claim 8
Independent Claim
42 words
A method for sealing a camera container, which comprises the steps of: installing a first seal into said container; compressing the first seal with an end plate; inserting a first end plate retaining ring; and inserting a second end plate retaining ring.
Claim 9
Dependent Claim
27 words
The method according to claim 5 further comprising the steps of: placing a second seal over a seal retainer; and sliding the seal retainer into said container.
Claim 10
Independent Claim
55 words
A method for opening a pressurized camera container having a removable end plate, which comprises the steps of: removing a first end plate retaining ring; unseating a seal between the container and end plate to permit internal pressure to escape; removing a second end plate retaining ring; and removing the end plate from the container.
Claim 11
Independent Claim
55 words
A method for opening a pressurized camera container having a removable end plate, which comprises the steps of: removing a first end plate retaining ring; unseating a seal between the container and end plate to permit internal pressure to escape; removing a second end plate retaining ring; and removing the end plate from the container.
Claim 12
Independent Claim
68 words
A method for hermetically sealing and opening a container having a removable end plate, which comprises the steps of: mounting a first seal on a seal retainer; sliding the seal retainer into the container; installing a second seal in the container against the seal retainer; compressing the second seal with the end plate; inserting a first end plate retaining ring; and inserting a second end plate retaining ring.
Claim 13
Independent Claim
68 words
A method for hermetically sealing and opening a container having a removable end plate, which comprises the steps of: mounting a first seal on a seal retainer; sliding the seal retainer into the container; installing a second seal in the container against the seal retainer; compressing the second seal with the end plate; inserting a first end plate retaining ring; and inserting a second end plate retaining ring.
Claim 14
Dependent Claim
46 words
The method according to claim 8 including the steps of: removing the second end plate retaining ring; unseating the second seal to permit pressure stabilization between the environment and the container; removing the first end plate retaining ring; and removing the end plate from the container.
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) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |