Patent US3571831A successfully refreshed from Google Patents.
US3571831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Float
Assignee: Individual
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Filing: 1968-10-04
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Granted: 1971-03-23
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Expires: 1988-10-04
Abstract
Abstract A float comprising one or more vessels of sheet material having a flat top and substantially vertical sides, with transversely placed brackets secured to the top for supporting stringers and a deck, the stringers bearing down upon the sides of the vessel under downward load, but bearing upward only upon the top thereof. The float may be completely disassembled when stored, or it may be constructed of two parts which may be transported and stored in side-by-side relation to occupy a minimum of space.
Inventors
- 👤 Elmer W Conklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:22
CPC Classifications
B; B63; B63B; B63B35/00; B63B35/58; B29; B29C; B29C35/00; B29C35/02; B29C35/04; B29C35/06; B29C48/00; B29C48/03; B29C48/06; B29C48/15; B29C48/25; B29C48/88; B29C48/91; B29C35/049; B29K; B29K2021/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
146 words
A float comprising a hollow, watertight vessel having a substantially flat top, spaced brackets disposed on the top of the vessel, means securing the brackets to the top, transverse stringers means securing the stringers to the brackets, and a platform secured to the stringers; said flat top comprising an individual flexible metal sheet secured along its sides to the vessel, said means securing the brackets to the top comprising fasteners disposed inwardly from the sides of the sheet to leave a flexible section of the sheet between the said sides and the fasteners, and said stringers extending over the vessel at both sides thereof and adapted to bear downward upon said sides of the vessel when under a load and to lift off the sides and be held by the fasteners upon a reversal of the load, whereby to provide a flexible support for said stringers.
Claim 2
Dependent Claim
146 words
A float comprising a hollow, watertight vessel having a substantially flat top, spaced brackets disposed on the top of the vessel, means securing the brackets to the top, transverse stringers means securing the stringers to the brackets, and a platform secured to the stringers; said flat top comprising an individual flexible metal sheet secured along its sides to the vessel, said means securing the brackets to the top comprising fasteners disposed inwardly from the sides of the sheet to leave a flexible section of the sheet between the said sides and the fasteners, and said stringers extending over the vessel at both sides thereof and adapted to bear downward upon said sides of the vessel when under a load and to lift off the sides and be held by the fasteners upon a reversal of the load, whereby to provide a flexible support for said stringers.
Claim 3
Dependent Claim
49 words
A float as described in claim 1, said stringers being each comprised of at least two sections, and means for separably joining said sections, said platform being divided into sections coextensive with the sections of the stringers, such that the float may be stored as two parts placed side-by-side.
Claim 4
Dependent Claim
31 words
A float as described in claim 2, said platform comprising two substantially identical rectangular sheets of plywood such that said two float parts are of substantially the same size and configuration.
Claim 5
Dependent Claim
49 words
A float as described in claim 1, said platform having a notch formed in a side thereof above a vessel and a handrail extending from the platform to the vessel adjacent the notch, the top of said vessel serving as a step by which to ascend to the platform.
Claim 6
Dependent Claim
33 words
A float as described in claim 1, a ladder disposed at the side of said float, and means for securing said ladder to said float for limited vertical movement relative to said float.
Claim 7
Dependent Claim
38 words
A float as described in claim 1, said platform comprising two substantially identical sheets of plywood, there being three stringers, and each sheet of plywood being secured individually and separably to one stringer and to the third stringer.
Claim 8
Dependent Claim
93 words
A float comprising a hollow, watertight vessel having a substantially flat top, spaced brackets disposed on the top of the vessel, means securing the brackets to the top, transverse stringers, means securing the stringers to the brackets, and a platform secured to the stringers; said vessel being comprised of sheet metal and having substantially flat spaced sides, a bottom which has a dihedral angle in cross section and closed ends, said sides and said top having overlapping and interlocked edges forming load-supporting rails for transmitting a load to the sides of said vessel.
Claim 9
Dependent Claim
93 words
A float comprising a hollow, watertight vessel having a substantially flat top, spaced brackets disposed on the top of the vessel, means securing the brackets to the top, transverse stringers, means securing the stringers to the brackets, and a platform secured to the stringers; said vessel being comprised of sheet metal and having substantially flat spaced sides, a bottom which has a dihedral angle in cross section and closed ends, said sides and said top having overlapping and interlocked edges forming load-supporting rails for transmitting a load to the sides of said vessel.
Claim 10
Dependent Claim
53 words
A float as described in claim 7, said brackets extending only over said top and said stringers extending beyond said brackets at said overlapped and interlocked edges, such that downward load exerted by said stringers is transmitted directly to said edges, and upward load on said stringers is transmitted only to said top.
Claim 11
Dependent Claim
93 words
A float comprising a hollow, watertight vessel having a substantially flat top, spaced brackets disposed on the top of the vessel, means securing the brackets to the top, transverse stringers, means securing the stringers to the brackets, a platform secured to the stringers, and a nose cone for said vessel, said nose cone having a skirt which fits snugly over the end of said vessel and a flange adapted to overlie the bracket and said means securing the stringers to the bracket also securing the nose cone flange to one of said brackets.
Claim 12
Dependent Claim
93 words
A float comprising a hollow, watertight vessel having a substantially flat top, spaced brackets disposed on the top of the vessel, means securing the brackets to the top, transverse stringers, means securing the stringers to the brackets, a platform secured to the stringers, and a nose cone for said vessel, said nose cone having a skirt which fits snugly over the end of said vessel and a flange adapted to overlie the bracket and said means securing the stringers to the bracket also securing the nose cone flange to one of said brackets.
Claim 13
Dependent Claim
127 words
A float comprising a hollow, watertight vessel having a substantially flat top, spaced brackets secured to the top of the vessel, a second hollow, watertight vessel spaced from the first and having a substantially flat top, spaced brackets secured to the top of said second vessel and aligned with the brackets on the first-mentioned vessel, transverse stringers extending across both vessels and supported thereby, means securing the stringers to the brackets, a platform secured to the stringers, a ladder disposed at the side of said float, spaced handrails secured to the float and having parallel portions adjacent the ladder, and means secured to the ladder and extending between said rails, said means having notches in the opposite ends thereof to receive the handrails for sliding movement thereon.
Claim 14
Dependent Claim
127 words
A float comprising a hollow, watertight vessel having a substantially flat top, spaced brackets secured to the top of the vessel, a second hollow, watertight vessel spaced from the first and having a substantially flat top, spaced brackets secured to the top of said second vessel and aligned with the brackets on the first-mentioned vessel, transverse stringers extending across both vessels and supported thereby, means securing the stringers to the brackets, a platform secured to the stringers, a ladder disposed at the side of said float, spaced handrails secured to the float and having parallel portions adjacent the ladder, and means secured to the ladder and extending between said rails, said means having notches in the opposite ends thereof to receive the handrails for sliding movement thereon.
Claim 15
Dependent Claim
29 words
A float as described in claim 10, said means secured to the ladder comprising an angular bracket having one leg overlying the platform to act as a downward stop.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |