US3786637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil fence
Assignee: Bridgestone Corp
•
Filing: 1972-03-07
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Granted: 1974-01-22
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Expires: 1992-03-07
Abstract
Abstract An oil fence comprising an elongated resilient belt member and a float secured to it for keeping at least a part of the belt member floating above water level. The floating portion of the belt member is kept substantially upright by a weight means and reinforcing means. The oil fence so flexes as to conform with the profile of water surface.
Inventors
- 👤 T Muramatsu
- 👤 K Aramaki
- 👤 Y Kondo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:34
CPC Classifications
E; E02; E02B; E02B15/00; E02B15/04; E02B15/08; E02B15/0814; Y; Y02; Y02A; Y02A20/00; Y02A20/20; Y02A20/204
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
259 words
An oil fence comprising a single sheet of elongated resilient belt member having two parallel longitudinal edges, each edge being flexible in the longitudinal direction of the belt member independently of the other edge, a plurality of resilient straps bonded to said belt member at uniform intervals, a flexible reinforcing means secured to said belt member to reinforce the belt member in a direction transverse of the belt member consisting of a plurality of resilient bar members each being sandwiched between said belt member and one of said resilient straps, a pair of tubular flexible float means connected to opposing surfaces of said belt member only at the positions of said resilient straps so as to extend in the longitudinal direction of said belt member at a central position between said two edges, the length between adjacent connections between the resilient straps and the tubular flexible float means being shorter than the spacing between the adjacent resilient strap measured along the longitudinal surface of said elongated belt member, so as to uniformly slacken the belt member between the adjacent straps while holding the slackened belt between The two floats, and a weight means secured to one of said two edges so as to be distributed along the entire length of the belt member such that upon placing the oil fence in water said tubular flexible float means maintains the other of said two edges above water level and holds said belt member substantially vertically and such that the belt member is able to flex along the water surface profile.
Claim 2
Dependent Claim
259 words
An oil fence comprising a single sheet of elongated resilient belt member having two parallel longitudinal edges, each edge being flexible in the longitudinal direction of the belt member independently of the other edge, a plurality of resilient straps bonded to said belt member at uniform intervals, a flexible reinforcing means secured to said belt member to reinforce the belt member in a direction transverse of the belt member consisting of a plurality of resilient bar members each being sandwiched between said belt member and one of said resilient straps, a pair of tubular flexible float means connected to opposing surfaces of said belt member only at the positions of said resilient straps so as to extend in the longitudinal direction of said belt member at a central position between said two edges, the length between adjacent connections between the resilient straps and the tubular flexible float means being shorter than the spacing between the adjacent resilient strap measured along the longitudinal surface of said elongated belt member, so as to uniformly slacken the belt member between the adjacent straps while holding the slackened belt between The two floats, and a weight means secured to one of said two edges so as to be distributed along the entire length of the belt member such that upon placing the oil fence in water said tubular flexible float means maintains the other of said two edges above water level and holds said belt member substantially vertically and such that the belt member is able to flex along the water surface profile.
Claim 3
Dependent Claim
26 words
An oil fence according to claim 1, wherein said weight means consists of a plurality of metallic blocks embedded in said belt member at uniform intervals.
Claim 4
Dependent Claim
47 words
An oil fence according to claim 1, wherein said reinforcing means consists of a plurality of flexible bars secured to said belt member at uniform intervals, and said weight means consists of a plurality of metallic blocks, each being secured to one end of said flexible bars.
Claim 5
Dependent Claim
24 words
An oil fence according to claim 1 and further comprising a handling rope secured to the belt member adjacent said tubular flexible float means.
References Cited (Backward Citations)
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US3592005A
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US3638430A
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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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |