Patent US4356787A successfully refreshed from Google Patents.
US4356787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Float construction
Assignee: Individual
•
Filing: 1977-12-30
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Granted: 1982-11-02
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Expires: 1997-12-30
Abstract
Abstract An improved float construction of the type primarily intended for use in supporting a seaplane and commonly referred to as a pontoon. More particularly, the present invention relates to an improved bottom configuration of a single step float.
Inventors
- 👤 Richard C. Harley
- 👤 Howard D. Harley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:57
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/16; B63B1/18; B63B1/20; B64; B64C; B64C25/00; B64C25/32; B64C25/54; B63B2001/202
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
186 words
A float construction of the type primarily intended for use in supporting a seaplane, said float comprising: a main body defining a major longitudinal dimension; a step extending across the bottom of said main body in substantially transverse relation to said major longitudinal dimension; a bow extending forwardly of said step, said bottom of said main body curving upwardly as it extends forwardly of said step along said bow, said bow defining a simple concave cross-section with regard to said major longitudinal dimension extending inwardly from the outboard edges of said bow with the apex of said cross-section defining the longitudinal midpoint of said bow; and a tail extending rearwardly of said step, said tail comprising a first tail section defining a simple concave cross-section with regard to said major longitudinal dimension and a second tail section defining a simple convex cross-section with regard to said major longitudinal dimension, wherein said first and said second tail sections each define congruent cross-sectional planes at their intersection, said first tail section extending rearwardly from said step and said second tail section extending rearwardly from said first tail section.
Claim 2
Dependent Claim
186 words
A float construction of the type primarily intended for use in supporting a seaplane, said float comprising: a main body defining a major longitudinal dimension; a step extending across the bottom of said main body in substantially transverse relation to said major longitudinal dimension; a bow extending forwardly of said step, said bottom of said main body curving upwardly as it extends forwardly of said step along said bow, said bow defining a simple concave cross-section with regard to said major longitudinal dimension extending inwardly from the outboard edges of said bow with the apex of said cross-section defining the longitudinal midpoint of said bow; and a tail extending rearwardly of said step, said tail comprising a first tail section defining a simple concave cross-section with regard to said major longitudinal dimension and a second tail section defining a simple convex cross-section with regard to said major longitudinal dimension, wherein said first and said second tail sections each define congruent cross-sectional planes at their intersection, said first tail section extending rearwardly from said step and said second tail section extending rearwardly from said first tail section.
Claim 3
Dependent Claim
25 words
A float as in claim 1 wherein said bottom of said main body tapers upwardly as it extends rearwardly of said step along said tail.
Claim 4
Dependent Claim
39 words
A float as in claim 2 wherein said upward taper is more acute along said first tail section and less acute along said second tail section, both with regard to a horizontal plane corresponding to said major longitudinal dimension.
Claim 5
Dependent Claim
35 words
A float as in claim 1 further comprising a substantially planar top portion extending along said main body major longitudinal dimension, whereby said float may be attached to the object it is intended to support.
Claim 6
Dependent Claim
44 words
A float as in claim 1 wherein said first tail section concave cross-section defines a substantially V-shaped groove extending inwardly from the outboard edges of said first tail section with the apex of said groove defining the longitudinal midpoint of said first tail section.
Claim 7
Dependent Claim
44 words
A float as in claim 1 wherein said second tail section convex cross-section defines a substantially V-shaped ridge extending inwardly from the outboard edges of said second tail section with the apex of said ridge defining the longitudinal midpoint of said second tail section.
Claim 8
Dependent Claim
44 words
A float as in claim 1 wherein said first tail section concave cross-section defines a substantially U-shaped groove extending inwardly from the outboard edges of said first tail section with the apex of said groove defining the longitudinal midpoint of said first tail section.
Claim 9
Dependent Claim
44 words
A float as in claim 1 wherein said second tail section convex cross-section defines a substantially U-shaped ridge extending inwardly from the outboard edges of said second tail section with the apex of said ridge defining the longitudinal midpoint of said second tail section.
Claim 10
Dependent Claim
19 words
A float as in claim 1 further comprising protective coating means disposed in surrounding relation to said main body.
Claim 11
Dependent Claim
12 words
A float as in claim 1 wherein said bow cross-section is V-shaped.
Claim 12
Dependent Claim
12 words
A float as in claim 1 wherein said bow cross-section is U-shaped.
Claim 13
Dependent Claim
39 words
A float as in claim 1 wherein the concavity defined by said bow cross-section is greatest adjacent the leading edge and least adjacent said step of said main body, said concavity decreasing from said leading edge to said step.
References Cited (Backward Citations)
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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) | 1985-11-01 | 1986-05-03 | 1986-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-01 | 1990-05-03 | 1990-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-01 | 1994-05-03 | 1994-11-02 | $7700.00 | Window Closed / Lapsed |