Patent US3720420A successfully refreshed from Google Patents.
US3720420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasket
Assignee: Parker Hannifin Corp
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Filing: 1971-03-19
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Granted: 1973-03-13
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Expires: 1991-03-19
Abstract
Abstract A gasket comprising a set of rigid cover sections overlying a set of rigid base sections, the sections carrying a resilient sealing element, the cover sections having endwise joints therebetween that are offset from endwise joints between the base sections and each cover section being attached to two base sections that it overlies so as to form a unitary gasket assembly.
Inventors
- 👤 J Jelinek
- 👤 E Reinsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:32
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/104
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
99 words
A gasket comprising a set of relatively rigid base sections combined endwise with intermediate parting lines therebetween to define a predetermined outline, a set of relatively rigid cover sections combined endwise with intermediate parting lines therebetween and a deformable sealing element carried by said sets of sections, the parting lines between said cover sections being displaced from the parting lines between said base sections so that each cover section overlies two base sections, and each cover section being rigidly attached to the base sections that it overlies whereby all the sections are joined to form a unitary gasket assembly.
Claim 2
Dependent Claim
99 words
A gasket comprising a set of relatively rigid base sections combined endwise with intermediate parting lines therebetween to define a predetermined outline, a set of relatively rigid cover sections combined endwise with intermediate parting lines therebetween and a deformable sealing element carried by said sets of sections, the parting lines between said cover sections being displaced from the parting lines between said base sections so that each cover section overlies two base sections, and each cover section being rigidly attached to the base sections that it overlies whereby all the sections are joined to form a unitary gasket assembly.
Claim 3
Dependent Claim
99 words
A gasket comprising a set of relatively rigid base sections combined endwise with intermediate parting lines therebetween to define a predetermined outline, a set of relatively rigid cover sections combined endwise with intermediate parting lines therebetween and a deformable sealing element carried by said sets of sections, the parting lines between said cover sections being displaced from the parting lines between said base sections so that each cover section overlies two base sections, and each cover section being rigidly attached to the base sections that it overlies whereby all the sections are joined to form a unitary gasket assembly.
Claim 4
Dependent Claim
99 words
A gasket comprising a set of relatively rigid base sections combined endwise with intermediate parting lines therebetween to define a predetermined outline, a set of relatively rigid cover sections combined endwise with intermediate parting lines therebetween and a deformable sealing element carried by said sets of sections, the parting lines between said cover sections being displaced from the parting lines between said base sections so that each cover section overlies two base sections, and each cover section being rigidly attached to the base sections that it overlies whereby all the sections are joined to form a unitary gasket assembly.
Claim 5
Dependent Claim
33 words
The gasket of claim 1 wherein said sealing element has a sealing portion laterally offset from said sections and projecting axially therebeyond for direct engagement with members to be sealed by said gasket.
Claim 6
Dependent Claim
30 words
The gasket of claim 2 wherein said sealing element has a mounting flange integrally connected to said sealing portion, said mounting flange being clamped between said cover and base sections.
Claim 7
Dependent Claim
30 words
The gasket of claim 3 wherein the base sections are formed to provide a channel to receive said mounting flange and the cover sections form one side of said channel.
Claim 8
Dependent Claim
39 words
The gasket of claim 4 wherein said mounting flange includes a portion projecting transversely therefrom and said channel includes a groove to receive said projecting portion to provide a mechanical interlock for retaining the sealing element on said sections.
Claim 9
Dependent Claim
18 words
The gasket of claim 5 wherein said mounting flange and said channel are of complementary T-shaped cross section.
Claim 10
Dependent Claim
13 words
The gasket of claim 1 wherein said sealing element is formed in sections.
Claim 11
Dependent Claim
16 words
The gasket of claim 7 wherein said sealing element sections are coextensive with said base sections.
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) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |