US3763595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal for hatch cover or the like
Assignee: Johnson Rubber Co
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Filing: 1972-09-07
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Granted: 1973-10-09
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Expires: 1992-09-07
Abstract
Abstract An elastomeric seal is disclosed which is particularly suited for forming a fluid-tight seal between a closure member and a structure extending around the opening to be closed such as the seal required between marine hatch cover and hatchway. The seal includes a generally U-shaped base section which supports a seal section. The seal section includes a bridging wall and a sealing wall supported by the bridging wall by spaced side legs and a center leg. Compression of the seal causes bowing of the bridging wall into the U-shaped base section and collapse of the side walls of the seal section. A resilient bumper is provided on the base wall to engage the bridging wall to maintain the level of compression force resisting further compression. As the seal is initially compressed, the compression force required builds rapidly to insure a proper seal with small seal compression. The seal is compressible through an additional substantial range without greatly increasing the required force of compression. Therefore, a proper seal is obtained through substantial ranges of seal compression without encountering excessive compressive forces.
Inventors
- 👤 J Sudyk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:55
CPC Classifications
E; E06; E06B; E06B7/00; E06B7/16; E06B7/22; E06B7/23; E06B7/2305; E06B7/2307; E06B7/2309
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
192 words
A seal comprising an elongated unitary body of elastomeric material, said body including a generally U-shaped base section and a seal section, said base section including a base wall and a pair of legs extending from the sides of said base wall, said seal section including a bridging wall substantially parallel to said base wall supported at its edges by said base legs and a seal wall substantially parallel to and spaced from said bridging wall, said seal wall being supported by said bridging wall by a pair of side legs and a central leg, and a resilient bumper formed on said body between said base wall and bridging wall, initial compression of said seal causing movement of said seal wall toward said base wall causing buckling of said side legs and bowing of said bridging wall without deformation of said bumper, continued compression causing further buckling of said side legs and continued bowing of said bridging wall until the bumper is engaged and deformed to resist further compression, said seal resisting compression with a force which builds rapidly and thereafter increases at a slower rate through a substantial range of compression.
Claim 2
Dependent Claim
192 words
A seal comprising an elongated unitary body of elastomeric material, said body including a generally U-shaped base section and a seal section, said base section including a base wall and a pair of legs extending from the sides of said base wall, said seal section including a bridging wall substantially parallel to said base wall supported at its edges by said base legs and a seal wall substantially parallel to and spaced from said bridging wall, said seal wall being supported by said bridging wall by a pair of side legs and a central leg, and a resilient bumper formed on said body between said base wall and bridging wall, initial compression of said seal causing movement of said seal wall toward said base wall causing buckling of said side legs and bowing of said bridging wall without deformation of said bumper, continued compression causing further buckling of said side legs and continued bowing of said bridging wall until the bumper is engaged and deformed to resist further compression, said seal resisting compression with a force which builds rapidly and thereafter increases at a slower rate through a substantial range of compression.
Claim 3
Dependent Claim
31 words
A seal as set forth in claim 1 wherein said bumper is formed on said base wall and is engaged by the side of said bridging wall opposite said central leg.
Claim 4
Dependent Claim
28 words
A seal as set forth in claim 2 wherein said bumper is formed by a wall projecting from said base wall which cooperates therewith to define an opening.
Claim 5
Dependent Claim
17 words
A seal as set forth in Claim 3 wherein said bumper is formed by a semi-cylindrical wall.
Claim 6
Dependent Claim
29 words
A seal as set forth in claim 4 wherein said base is provided with diagonal walls joining said base wall and said base legs adjacent to said bridging wall.
Claim 7
Dependent Claim
26 words
A seal as set forth in claim 5 wherein said side legs are spaced apart by a distance less than the spacing between said base leg.
Claim 8
Dependent Claim
26 words
A seal as set forth in claim 6 wherein said side legs are formed with hinge sections of reduced thickness and said side legs buckling inwardly.
Claim 9
Dependent Claim
26 words
A seal as set forth in claim 7 wherein said slower rate results in a substantially constant force of compression through said substantial range of compression.
Claim 10
Dependent Claim
70 words
A seal as set forth in claim 8 wherein said seal is mounted on a first member to form a seal with a surface provided by a second member, said members being movable toward each other to cause engagement between said seal wall and said surface and subsequent compression of said seal, and stop means limit movement of said members toward each other to limit the compression of said seal.
Claim 11
Dependent Claim
22 words
A seal as set forth in claim 9 wherein said members are provided by a marine hatchway and a cooperating hatch cover.
Claim 12
Dependent Claim
36 words
A seal as set forth in claim 1 wherein said bumper is formed by a semicylindrical wall formed between said base wall or said bridging wall and cooperating with one of them to form an opening.
Claim 13
Dependent Claim
29 words
A seal as set forth in claim 1 wherein said base is provided with diagonal walls joining said base wall and said base legs adjacent to said bridging wall.
Claim 14
Dependent Claim
26 words
A seal as set forth in claim 1 wherein said side legs are formed with hinge sections of reduced thickness and said side legs buckle inwardly.
References Cited (Backward Citations)
US2899721A
Cited
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Cited
US2622286A
Cited
US2705655A
Cited
US3104643A
Cited
DE1509167A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |