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US4137987A Expired / Lapsed US ⏱️ 0.0 years remaining

Stay supported membrane planing seal

Assignee: Rohr Inc
•
Filing: 1976-12-27
•
Granted: 1979-02-06
•
Expires: 1996-12-27
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Abstract

Abstract A planing seal for a vehicle having a hull with downward extending sidewalls. The seal comprises a plurality of juxtaposed supporting stays positioned parallel to and between the extended hull sidewalls. These supporting stays are connected to the hull at their forward end and remain free at their rearward end. A plurality of forming cables are attached to the hull at one of their ends and at least one of the plurality of cables attach to at least one of the supporting stays intermediate its ends. The cables have a length selected to provide a curvilinear form to the supporting member which allows independent freedom of movement of the stays toward the hull cable attach point. A flexible, non-permeable membrane extends the width of the hull between the sidewall extensions. The membrane has a spaced-apart sealed attachment to the hull fore and aft. The combination of the extended sidewalls and membrane hull attachments provide a pressurizable plenum chamber with seals supported by the stays.

Inventors

  • 👤 Michael J. Plackett

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-22 23:33
CPC Classifications
B; B60; B60V; B60V1/00; B60V1/16

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 143 words
A planing seal for a vehicle, said vehicle comprising a hull having downward extending sidewalls for forming a plenum chamber therebetween comprising: a plurality of juxtaposed elongated supporting members positioned parallel to and between said sidewalls, said supporting members have a stiff section intermediate forward and rearward flexible sections, the forward section being attached to said hull; at least one forming member being attached between said hull and said stiff section thereby providing freedom of movement of the flexible sections; and a flexible membrane extending the width of said hull between said sidewalls, said membrane having its forward and rearward surfaces spaced apart and fixedly attached in a sealed relationship to said hull and supported at least in part by said supporting members, said rearward surface of said membrane is attached to said hull forward of the hull attachment of said forming members.
Claim 2
Dependent Claim 143 words
A planing seal for a vehicle, said vehicle comprising a hull having downward extending sidewalls for forming a plenum chamber therebetween comprising: a plurality of juxtaposed elongated supporting members positioned parallel to and between said sidewalls, said supporting members have a stiff section intermediate forward and rearward flexible sections, the forward section being attached to said hull; at least one forming member being attached between said hull and said stiff section thereby providing freedom of movement of the flexible sections; and a flexible membrane extending the width of said hull between said sidewalls, said membrane having its forward and rearward surfaces spaced apart and fixedly attached in a sealed relationship to said hull and supported at least in part by said supporting members, said rearward surface of said membrane is attached to said hull forward of the hull attachment of said forming members.
Claim 3
Dependent Claim 22 words
The invention as defined in claim 1, wherein said supporting members are of unitary construction and have varying thickness along their length.
Claim 4
Dependent Claim 22 words
The invention as defined in claim 1, wherein said supporting members are of unitary construction and have varying width along their length.
Claim 5
Dependent Claim 24 words
The invention as defined in claim 1, wherein said supporting members are of unitary construction and have varying thickness and width along their length.
Claim 6
Dependent Claim 21 words
The invention as defined in claim 1, wherein the forward end of said supporting member is pivotally attached to said hull.
Claim 7
Dependent Claim 14 words
The invention as defined in claim 1, wherein said forming members are flat straps.

References Cited (Backward Citations)

US3204715A Cited
US3379270A Cited
US3288236A Cited
GB1089464A Cited
GB1220081A Cited
US3532180A Cited
US3536154A Cited
US3805913A Cited
US3866707A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1982-02-05 1982-08-07 1983-02-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1986-02-05 1986-08-07 1987-02-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1990-02-05 1990-08-07 1991-02-06 $7700.00 Window Closed / Lapsed

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