Patent US4379705A successfully refreshed from Google Patents.
US4379705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Life belt
Assignee: Individual
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Filing: 1981-08-19
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Granted: 1983-04-12
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Expires: 2001-08-19
Abstract
Abstract A life belt comprising a ring shaped tubular body which incorporates a device for fastening the tubular body around a waist of a person, a compressed gas containing capsule connected to the tubular body and an actuator for releasing the compressed gas into the tubular body to inflate the tubular body, in which the tubular body has a first portion and a second portion. The second portion is obliquely bent downward at about 120°-160° relative to the first portion.
Inventors
- 👤 Hikoji Saotome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:10
CPC Classifications
B; B63; B63C; B63C9/00; B63C9/08; B63C9/13; B63C9/15; B63C9/155
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
200 words
A life belt comprising an annular inflatable tubular body, means for releasably fastening said tubular body around the waist of a person, said means being releasable when said tubular body is inflated for use, a capsule containing therein compressed gas for inflating said tubular body, and an actuator for releasing the compressed gas into said tubular body to thereby inflate said tubular body, wherein said tubular body is made of two symmetrically extending sheet members, said sheet members each having a first longitudinal sheet portion and second sheet portions at the ends of said first sheet portion, said second sheet portions being inclined downwardly at about 120°-160° relative to the longitudinal direction of said first portion, said sheet members being sealed together at their circumference to form a life belt base in a symmetrical structure with a gas chamber formed therein, said life belt base being folded at its middle portion and connected at its ends together to thereby form an annular shape, strips being provided on the second sheet members and adjacent to said ends of said life belt base, thereby maintaining said second portions in a closely contacted manner to each other when said life belt is inflated.
Claim 2
Dependent Claim
200 words
A life belt comprising an annular inflatable tubular body, means for releasably fastening said tubular body around the waist of a person, said means being releasable when said tubular body is inflated for use, a capsule containing therein compressed gas for inflating said tubular body, and an actuator for releasing the compressed gas into said tubular body to thereby inflate said tubular body, wherein said tubular body is made of two symmetrically extending sheet members, said sheet members each having a first longitudinal sheet portion and second sheet portions at the ends of said first sheet portion, said second sheet portions being inclined downwardly at about 120°-160° relative to the longitudinal direction of said first portion, said sheet members being sealed together at their circumference to form a life belt base in a symmetrical structure with a gas chamber formed therein, said life belt base being folded at its middle portion and connected at its ends together to thereby form an annular shape, strips being provided on the second sheet members and adjacent to said ends of said life belt base, thereby maintaining said second portions in a closely contacted manner to each other when said life belt is inflated.
Claim 3
Dependent Claim
22 words
The life belt according to claim 1, in which said life belt has constrictions on the first portion at a predetermined interval.
Claim 4
Dependent Claim
27 words
The life belt according to claim 2, in which said tubular body has flanges on its upper and lower portions, said constrictions being formed at said flanges.
Claim 5
Dependent Claim
149 words
An inflatable life belt comprising: two sheet members each having a first middle portion and second end portions in a symmetrical shape, said second end portions being extended from said first middle portion in an opposite direction and inclined at about 120°-160° relative to a longitudinal direction of said first middle portion, said two sheet members being sealed together at their circumferences to form as upper flange, lower flange and two end flanges to thereby form a sealed gas chamber, said sheet members sealed together being folded such that said end flanges of the second portions are connected together to thereby form an annular inflatable tubular body, means for releasably fastening said tubular body around the waist of a person who uses the life belt, a capsule containing therein compressed gas for inflating said life belt, and an actuator for releasing the gas into said life belt for inflation.
Claim 6
Dependent Claim
149 words
An inflatable life belt comprising: two sheet members each having a first middle portion and second end portions in a symmetrical shape, said second end portions being extended from said first middle portion in an opposite direction and inclined at about 120°-160° relative to a longitudinal direction of said first middle portion, said two sheet members being sealed together at their circumferences to form as upper flange, lower flange and two end flanges to thereby form a sealed gas chamber, said sheet members sealed together being folded such that said end flanges of the second portions are connected together to thereby form an annular inflatable tubular body, means for releasably fastening said tubular body around the waist of a person who uses the life belt, a capsule containing therein compressed gas for inflating said life belt, and an actuator for releasing the gas into said life belt for inflation.
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) | 1986-04-11 | 1986-10-11 | 1987-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-11 | 1990-10-11 | 1991-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-11 | 1994-10-11 | 1995-04-12 | $7700.00 | Window Closed / Lapsed |