US4738563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Buoyant marine fence
Assignee: Individual
•
Filing: 1987-07-22
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Granted: 1988-04-19
•
Expires: 2007-07-22
Abstract
Abstract Partially submerged, buoyant portable marine fence has netting material attached to series of float-supported longitudinally spaced upright fence poles which extend from bottom of water to above the surface of water. Floats are attached to each pole at the low water elevation on each pole. When horizontal wind or water forces are exerted upon fence, poles pivot about detachable ballasts located at the base of each pole.
Inventors
- 👤 Stephen E. Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:11
CPC Classifications
E; E02; E02B; E02B5/00; E02B5/08; E02B3/00; E02B3/04; E04; E04H; E04H4/00; E04H4/14; E04H4/145
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
188 words
A marine fence comprising: a plurality of longitudinally spaced fence posts including intermediate and end fence posts; each of said fence posts having an upper end and a bottom end; a flexible mesh material extending from end to end of the fence and connected to each of said fence posts; a float attached intermediately along the length of each of said fence posts; each of said fence posts having a ballast weight disposed near the bottom end of said fence posts by which means the bottom of said fence post sinks in water; a float disposed intermediately along the length of each of said fence posts by which means said upper end of said fence post floats above said bottom end of said fence posts; said mesh material extending from the bottom of said fence post to an elevation above said float on said fence post; and a first cable attached to the bottom of each of said fence posts extending from end to end to said fence, whereby each of said fence posts pivots about its bottom end when horizontal force is applied to said fence post;
Claim 2
Dependent Claim
188 words
A marine fence comprising: a plurality of longitudinally spaced fence posts including intermediate and end fence posts; each of said fence posts having an upper end and a bottom end; a flexible mesh material extending from end to end of the fence and connected to each of said fence posts; a float attached intermediately along the length of each of said fence posts; each of said fence posts having a ballast weight disposed near the bottom end of said fence posts by which means the bottom of said fence post sinks in water; a float disposed intermediately along the length of each of said fence posts by which means said upper end of said fence post floats above said bottom end of said fence posts; said mesh material extending from the bottom of said fence post to an elevation above said float on said fence post; and a first cable attached to the bottom of each of said fence posts extending from end to end to said fence, whereby each of said fence posts pivots about its bottom end when horizontal force is applied to said fence post;
Claim 3
Dependent Claim
35 words
The fence according to claim 1 in which each of said floats is attached to said fence post near the mean low elevation of the surface of the water in which the fence is disposed.
Claim 4
Dependent Claim
30 words
The fence according to claim 2 further comprising a second cable attached intermediately along the length of each of said fence posts extending from end to end of said fence.
Claim 5
Dependent Claim
44 words
The fence according to claim 2 in which said mesh material extends from the bottom of said fence posts to an elevation on said fence posts above said floats and above the mean high elevation of the water in which the fence is disposed.
Claim 6
Dependent Claim
16 words
The fence according to claim 4 in which said ballast weight has a convex bottom surface.
Claim 7
Dependent Claim
34 words
The fence according to claim 4 further comprising a swivel connection means disposed between said ballast weight and the bottom of said pole by which means said pole may pivot relative to said weight.
Claim 8
Dependent Claim
39 words
The fence, according to claim 6, further comprising a cavity disposed within said ballast weight, said cavity having an opening in the top of said ballast weight, and said bottom of said pole being loosely disposed within said cavity.
Claim 9
Dependent Claim
20 words
The fence according to claim 6 in which said swivel connection means comprises a clevis and a removable clevis pin.
Claim 10
Dependent Claim
18 words
The fence according to claim 8 in which said pole is woven through openings in said mesh material.
Claim 11
Dependent Claim
23 words
The fence according to claim 9 further comprising a flexible sheath surrounding said pole, and said sheath being sewn to said mesh material.
Claim 12
Dependent Claim
15 words
The fence according to claim 4 in which said fence posts are elongated semi-rigid members.
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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) | 1991-04-19 | 1991-10-19 | 1992-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-19 | 1995-10-19 | 1996-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-19 | 1999-10-19 | 2000-04-19 | $7700.00 | Window Closed / Lapsed |