US4667618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removable connection of a rigid deck and rigid keel to the covers of an inflatable boat
Assignee: Individual
•
Filing: 1985-08-29
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Granted: 1987-05-26
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Expires: 2005-08-29
Abstract
Abstract A device for releasably connecting a rigid deck and a rigid hull to the covers of the bladders of an inflatable boat comprises an assemblage of two rigid plates joined together along their edges to form a sealed chamber which is fastened to the covers of the bladders, or directly to these latter, through bolts acting through the intermediary of suitable pressure elements. Holes passing through the edges of the two rigid plates are provided for the bolts.
Inventors
- 👤 Edoardo Cigognetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:43
CPC Classifications
B; B63; B63B; B63B7/00; B63B7/06; B63B7/08; B63B7/082
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
133 words
A device for releasably connecting a rigid deck and a rigid hull to an outer layer of an inflatable boat comprising a sealed chamber composed of a substantially rectangular rigid upper plate having peripheral edges and forming the deck of the inflatable boat, and a bent rigid lower plate having peripheral edges and concave towards said upper plate, forming the hull of the boat, said upper and lower plates each having a plurality of holes passing through their respective peripheral edges, the holes of the upper plate being aligned with corresponding holes of the lower plate; said device comprising a plurality of bolts each passing through said outer layer and an aligned pair of said plurality of holes; and at least one sealing gasket interposed between said outer layer and said upper plate.
Claim 2
Independent Claim
133 words
A device for releasably connecting a rigid deck and a rigid hull to an outer layer of an inflatable boat comprising a sealed chamber composed of a substantially rectangular rigid upper plate having peripheral edges and forming the deck of the inflatable boat, and a bent rigid lower plate having peripheral edges and concave towards said upper plate, forming the hull of the boat, said upper and lower plates each having a plurality of holes passing through their respective peripheral edges, the holes of the upper plate being aligned with corresponding holes of the lower plate; said device comprising a plurality of bolts each passing through said outer layer and an aligned pair of said plurality of holes; and at least one sealing gasket interposed between said outer layer and said upper plate.
Claim 3
Dependent Claim
91 words
Device according to claim 1, and pressure elements adapted to be interposed between said outer layer and said plurality of bolts, said pressure elements comprising suitably perforated rigid blocks being inscribable in elongated parallelepipeds and having substantially straight axes, each of which blocks comprises opposite ends in the form of a V-shaped projection and a reversed-V-shaped groove respectively, thereby permitting each pressure element to be partially inserted in the adjoining pressure element in order to equalize the pressure applied by the bolts over a relatively large surface of said outer layer.
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) | 1990-05-25 | 1990-11-24 | 1991-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-25 | 1994-11-24 | 1995-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-25 | 1998-11-24 | 1999-05-26 | $7700.00 | Window Closed / Lapsed |