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US3901167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterproof, airtight closure
Assignee: Individual
•
Filing: 1974-06-06
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Granted: 1975-08-26
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Expires: 1994-06-06
Abstract
Abstract A waterproof, airtight closure assembly consisting of a cylindrical door frame having an internal peripheral flange, and a door including a circular plate adapted to engage the flange and inwardly of the plate, a compressible rubber collar normally insertable through the flange, the door including mechanism operable to expand the collar radially to engage the flange, and to engage the frame inwardly of the flange, the collar having a specially preformed groove therein for insuring proper engagement thereof with the flange.
Inventors
- 👤 Dale C Reese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:40
CPC Classifications
E; E05; E05G; E05G1/00; E05G1/02; E05G1/026; E05Y; E05Y2600/00; E05Y2600/40; E05Y2600/41; E05Y2600/452
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
229 words
A closure assembly comprising: a. a tubular body member serving as a door frame and having an internal peripheral flange, said flange being provided with inner and outer surfaces parallel to the plane of the door, b. a closure door engageable in said body member and including a compressible collar member extending about the periphery of said door, said collar normally being insertable through said body member flange to a position in which it is disposed within and extends inwardly beyond said body member flange, and c. compressing means carried by said door and operable to compress said collar in a direction normal to the door plane, whereby said collar is bulged outwardly in a direction parallel to the door plane to engage said body member and its flange, said collar having a groove formed peripherally in the outer surface thereof operable to engage said body member flange as said collar is bulged outwardly, said collar groove providing a shoulder of said collar parallel to the door plane facing outwardly relative to said door, said groove being otherwise so configurated and positioned that as said collar is bulged outwardly parallel to the door plane by compressive force exerted thereon normally to the door plane, the engagement of said shoulder thereof with said inner surface of said body flange is the sole initial engagement between said collar and body member.
Claim 2
Dependent Claim
229 words
A closure assembly comprising: a. a tubular body member serving as a door frame and having an internal peripheral flange, said flange being provided with inner and outer surfaces parallel to the plane of the door, b. a closure door engageable in said body member and including a compressible collar member extending about the periphery of said door, said collar normally being insertable through said body member flange to a position in which it is disposed within and extends inwardly beyond said body member flange, and c. compressing means carried by said door and operable to compress said collar in a direction normal to the door plane, whereby said collar is bulged outwardly in a direction parallel to the door plane to engage said body member and its flange, said collar having a groove formed peripherally in the outer surface thereof operable to engage said body member flange as said collar is bulged outwardly, said collar groove providing a shoulder of said collar parallel to the door plane facing outwardly relative to said door, said groove being otherwise so configurated and positioned that as said collar is bulged outwardly parallel to the door plane by compressive force exerted thereon normally to the door plane, the engagement of said shoulder thereof with said inner surface of said body flange is the sole initial engagement between said collar and body member.
Claim 3
Dependent Claim
74 words
A closure as recited in claim 1 wherein said collar has a normally cylindrical outer surface of greater axial length than the thickness of said body member flange, said groove being formed in said external surface and being generally of V-shape, one wall thereof forming said shoulder generally normal to the collar axis and facing outwardly of said door, and the other wall thereof extending at an acute angle to said external collar surface.
Claim 4
Dependent Claim
58 words
A closure as recited in claim 2 wherein said groove shoulder is normally spaced apart from the inner surface of said body member flange in a direction inward from said flange, and wherein said other groove wall merges with said external collar surface at a position within the range of the axial thickness of said body member flange.
Claim 5
Dependent Claim
30 words
A closure as recited in claim 2 with the addition of means operable to prevent rotation of said door relative to said body member as said collar is bulged outwardly.
References Cited (Backward Citations)
US779388A
Cited
US2604225A
Cited
US2744559A
Cited
US3004680A
Cited
US3465820A
Cited
US3747541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |