Patent US1084598A successfully refreshed from Google Patents.
US4094028A
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US
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Automatic inflating lifesaving buoy
Assignee: NOF Corp
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Filing: 1977-03-25
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Granted: 1978-06-13
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Expires: 1997-03-25
Abstract
Abstract An automatically inflating lifesaving buoy device having a gas generating device in which the gas generating composition is ignited by an electric ignition device powered by a water-activated electric cell or battery. The gas then generated is cooled as it flows into an inflatable bag to form the lifesaving buoy.
Inventors
- 👤 Hikaru Fujiyama
- 👤 Tsuneo Kasama
- 👤 Shigenobu Higuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:33
CPC Classifications
B; B01; B01J; B01J7/00; B01J7/02; B63; B63C; B63C9/00; B63C9/08; B63C9/18
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
160 words
An automatic inflating lifesaving buoy comprising a gas generating device, an inflatable bag and an electric cell or battery, the gas generating device being provided with the electric cell or battery at the rearward end and the inflatable bag at the forward end, the gas generating device being a substantially hollow body in which an electric ignition device is arranged adjacent to the electric cell or battery and/is electrically connected with the electric cell or battery and surrounded with a gas generating composition, and a spacer provided in contact with and in the forward direction of the gas generating composition, a multi-perforated partition plate provided in contact with or integrated with the spacer, another multi-perforated partition plate provided in the forward direction of the first multi-perforated partition plate and at an appropriate distance to form a chamber wherein a cooling agent is charged, and an outlet for supplying generated gas to the inflatable bag through the second multi-perforated partition plate.
Claim 2
Dependent Claim
160 words
An automatic inflating lifesaving buoy comprising a gas generating device, an inflatable bag and an electric cell or battery, the gas generating device being provided with the electric cell or battery at the rearward end and the inflatable bag at the forward end, the gas generating device being a substantially hollow body in which an electric ignition device is arranged adjacent to the electric cell or battery and/is electrically connected with the electric cell or battery and surrounded with a gas generating composition, and a spacer provided in contact with and in the forward direction of the gas generating composition, a multi-perforated partition plate provided in contact with or integrated with the spacer, another multi-perforated partition plate provided in the forward direction of the first multi-perforated partition plate and at an appropriate distance to form a chamber wherein a cooling agent is charged, and an outlet for supplying generated gas to the inflatable bag through the second multi-perforated partition plate.
Claim 3
Dependent Claim
46 words
The automatic inflating lifesaving buoy as claimed in claim 1, wherein said gas generating composition is a solid gas generating composition consisting of at least one metal azide selected from the group consisting of alkali metal azide and alkaline earth metal azide, and manganese (IV) oxide.
Claim 4
Dependent Claim
24 words
The automatic inflating lifesaving buoy as claimed in claim 2, wherein said solid gas generating composition consists of sodium azide and manganese (IV) oxide.
Claim 5
Dependent Claim
40 words
The automatic inflating lifesaving buoy as claimed in claim 1, wherein said cooling agent is at least one kind of inorganic oxide particles selected from the group consisting of aluminum oxide, silicon oxide and minerals consisting mainly of these substances.
Claim 6
Dependent Claim
47 words
The automatic inflating lifesaving buoy as claimed in claim 1, wherein the inflatable bag is a buoy-shaped flexible composite sheet obtained by laminating at least one of flexible covering substances selected from the group consisting of natural rubber, synthetic rubbers and synthetic resins, and a woven fabric.
Claim 7
Dependent Claim
28 words
The automatic inflating lifesaving buoy as claimed in claim 5, wherein the inflatable bag is a flexible composite sheet consisting of a urethane resin and nylon woven fabric.
Claim 8
Dependent Claim
42 words
The automatic inflating buoy as claimed in claim 1, wherein the gas generating device comprises an electric ignition device provided therein with a fuse head which is ignited by supplying an electric current and an ignition charge arranged around the fuse head.
Claim 9
Dependent Claim
18 words
The automatic inflating buoy as claimed in claim 1, wherein the electric cell or battery is sea water-activated.
Claim 10
Dependent Claim
46 words
The automatic inflating buoy as claimed in claim 1, wherein the electric cell or battery is sea water-activated and is provided with a vessel enclosing an electrolyte composition consisting mainly of sodium chloride, which dissolves in fresh water and actuates the sea water-activated cell or battery.
Claim 11
Dependent Claim
48 words
The automatic inflating lifesaving buoy of claim 1, wherein a partition wire gauze is provided in the forward direction of the second multi-perforated partition plate and in contact with the rear end of the outlet for supplying the gas to form a chamber wherein a filter is charged.
Claim 12
Dependent Claim
18 words
The automatic inflating lifesaving buoy of claim 1, wherein the gas generating device is surrounded by insulating paper.
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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) | 1981-06-12 | 1981-12-12 | 1982-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-12 | 1985-12-12 | 1986-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-12 | 1989-12-12 | 1990-06-13 | $7700.00 | Window Closed / Lapsed |