PERSONAL FLOTATION DEVICE

Abstract: A personal emergency rescue assembly comprising a container (400) attachable to a person with an automatically inflatable flotation device (413) stored in the container. The container (400) is readily opened by pull on a release (401) so that the flotation device (413) automatically inflates.

Description: DESCRIPTION PERSONAL FLOTATION DEVICE Prior Application This is a continuation-in-part of prior co-pending United States Application Serial Number 462,213, filed January 31, 1983. Technical Field This invention relates to emergency devices to assist in the rescue of persons who have fallen overboard in deep water. In particular it relates to flotation devices which can be sent into the water immediately after the emergency is discovered or worn by individuals. Background Of The Invention Prior art emergency devices have one or more dis¬ advantages such as time-consuming deployment and excessive weight. Personal flotation devices which have been described in the prior art are typically bulky, hot and uncomfortable to wear. One object of the present invention is to provide a compact, lightweight flotation device which can be worn by the person and readily and reliably deployed. Other objects and advantages of this invention will be apparent from the description and claims which follow, taken together with the appended drawings. Summary of the Invention The invention comprises broadly an assembly of an inflatable flotation device in a container mounted on the deck of a ship or worn by the individual. The ship-mounted container has a front flap which is releasably secured to the walls of the container. A pull on a strap attached to the flap opens the container and permits the stored device to fall into the water. Means are provided to automatically inflate the devices with a gas under pressure, as for example, carbon dioxide. The device worn by the individual person also has a front flap which is releasably secured to the walls of the container. A pull on the flap device by the person in the water opens the container and initiates the inflation of the stored flotation device. As the pressure and volume build up in the flotation device the device is forced out from the open container into the water. Adjustable snaps are provided to secure the flotation device to the person in a suitable position, the device at all time being tethered to the person. In its preferred form, the ship-mounted container holds both inflatable location and inflatable flotation devices tethered together. In addition, it is preferred that identification and signal devices be included, as for example, a strobe light, air horn, whistle, flares, dye marker, distress flag, radar reflector panels, helium balloon and sea anchor. Where appropriate, such identifica- tion and signal devices may also be tethered to the inflatable devices. In one particular form, the ship-mounted container is attached by straps to the rail on the deck of a ship. A release strap extends from the bottom of the front flap to the top of the container where it is connected to a line attached to the deck. Thus, a pull on the line immediately pulls up the front flap permitting the stored devices to fall into the water. The front panel is preferably releasably attached, as for example, with Velcro to an upward skirt extension of the bottom panel. When the front flap is pulled up, the skirt and bottom panel drop down. A metal snap between the front panel and the skirt insures that the container will not open accidentally but only when there is sufficient pull. The inflatable location device of the ship-mounted container is preferably a signal cone with a weight in the bottom to keep it vertical when inflated. Inflation of the devices is accomplished by releasing gas stored under f O pressure. Such release is accomplished either by the action of the water on the release mechanism or by mechanical release triggered by the pull on lines attached to the container as the contents fall into the water. In the latter instance, for example, a spring-loaded puncture pin is driven into the opening of the vessel under pressure, thus permitting inflation. The driving is accomplished by a pivoted arm, one end of which is connected to the container. As the devices fall, the pull causes the arm to pivot and then fall away. The inflation thus starts before the devices hit the water. Water-soluble releases can also be used since they are activated immediately upon striking the water. In the personal flotation device, a metal snap is also preferred to prevent accidental opening of the container. Brief Description of Drawings Figs. 1-11 illustrate a ship-mounted container, while Figs. 12-18 illustrate a container worn by an individual person. Fig. 1 is a view showing the container with stored flotation devices mounted on the rail of a boat and with its release line attached to the deck. Fig. 2 shows the same view as Fig. 1 after the devices have been dropped from the container. Fig. 3 shows the devices partially inflated on the surface of the water. Fig. 4 shows the devices fully inflated with the survivor in position on the horseshoe. Fig. 5 is a partial perspective view of a preferred form of the invention in stowed condition mounted on the rail of a boat with its release line attached to the deck. Fig. 6 is an opposite perspective view of Fig. 5 showing the attachment of the front panel to the skirt extension of the bottom panel. Fig. 7 is a schematic cross-section along line 7-7 of Fig. 6 showing the packing of the inflatable devices in the container. Fig. 8 is an ' enlarged detailed view of the fully-inflated tethered devices in the water. Fig. 9 is a partial section along line 9-9 showing the bottom portion of the signal cone. Fig. 9A is a partial section showing an alternate construction of the signal cone. Fig. 10 is a schematic section showing the operation of the water soluble release mechanism for inflating with gas under pressure. Fig. 11 is a schematic section showing the mechanism for mechanically releasing the gas under pressure. Fig. 12 is a front perspective view of another embodiment of this invention, namely a personal flotation device adapted to be worn in stored condition by an individual. Fig. 13 is a rear perspective view. Fig. 14 is a vertical section. Fig. 15 illustrates how the device of Fig. 12 is worn by an inventor. Fig. 16 illustrates the device of Fig. 12 in the process of being actuated. Fig. 17 shows the individual with the fully deployed personal flotation device. Fig. 18 is a schematic diagram illustrating the method of inflation. Specific Examples of Invention Referring now to Figs. 1-11 in the drawings, a preferred embodiment 10 of this invention is shown attached to the rail 12 of vessel 11 with straps 97 and 98. The container 100 comprises a back wall 100a vertically attached to two side walls 100b. A top wall 100c has a foldable, flexible front extension lOOd. Extending from the bottom of back wall 100a is a bottom panel 102 attached only along one edge and having a foldable skirt extension 103a provided with a fastener means 102b as for example, Velcro. Front flexible panel lOOd has cooperating fastening means lOOdd. Panel lOOd also has an external metal snap 102a to which is attached strap lOOf extending through loop 109 to ring 101 attached to release line 14 which in turn is held on the deck 96 of the vessel. Pulling on the release line 14 causes the flexible front panel lOOd to be separated from the skirt 103a and pulled up. The skirt with the bottom panel 102 drops back and down and the contents of the container drop down to the water in a very rapid fashion. Stored within the container is a collapsed inflatable horseshoe flotation device 111, a collapsed inflatable signal cone 104, a weight 105 in the signal cone, carbon dioxide storage means 301 and carbon dioxide valve release means 300 associated with said carbon dioxide storage means. The signal cone and horseshoe flotation device are tethered together with lines 109 and 110. Also stored in the container are other rescue devices such as an air horn, whistle, dye marker, aerial flare, mini strobe light, signal light and personal light. Associated with the inflatable cone is a signal flag 108, a water-activated light 120, reflective panels 121 and a drogue 119. The container is preferably made with a vacuum-formed plastic inner liner covered with nylon pack cloth. When the release line 14 is pulled , the contents of the container 100 immediately fall out and the inflatable cone and horseshoe flotation device are automatically inflated as illustrated more particularly in Figs . 2 and 11 . Lanyards 104a are attached to cam-shaped levers 300a having cut-out 300b wh ich mount on pivot 302b . When the contents are dropped out of the container , the cam-shaped levers 300a rotate so as to drive puncture pin 302 into the carbon dioxide reservoir 301 and then separate from the pivot 30,2b. Inflation thus begins wh ile the cone and horseshoe device are still falling . An al ternative method of automatic inflation is to use as illustrated in Fig . 10 , a water-soluble release which permi ts spr ing 207 to drive puncture pin 202 into carbon dioxide container 201 , utilizing a fixed cam lever 203. Both OMPI ^r 31 devices have as a safety a manual activator 209 in the event that the automatic inflation fails. Signal cone 104 when inflated sits vertically in the water. Its weight compartment 105a has a zipper 106 for insertion of weight 105 and is separated from the carbon dioxide compartment. The cone 104 is preferably neoprene- coated nylon 107 with aluminized mylar coating 107a for radar reflection. It has connections 119b for lines 119a holding stabilizing sea anchor 119. A light 120 is mounted in the upper end and makes the reflective panels 121 visible. Power for the light 120 is provided by a water- activated battery 117. Signal flag 108 is mounted near the top of the cone. A manual inflation tube 118 is provided. The horseshoe flotation device also has a manual inflation tube 114, a pocket 113 for ancillary devices, and a line 115 which connects the snap 115b to snap 115a to hold the survivor 13 within the flotation device. Among the ancillary devices are a helium balloon 127, a strobe light 120b and a flare 120. An alternative structure for anchoring the signal cone, as illustrated in Fig. 9A, is to form the bottom of the inflation chamber 104a as an inverted cone 107b terminating in chamber 107b containing a lead weight 205b. Referring now to the embodiment of the invention illustrated in Figs. 12 to 18, a personal flotation device 400 is shown attached to the belt on clothing of a man 400a. The device has an outer case comprising side walls 400b and 400c, bottom wall 400d, rear wall 400e, top wall 418. The side walls, bottom wall, and back wall are firmly attached to one another. However, the front flap 418 is permanently attached only at its bottom. In stored condition the front flap 418 is detachably connected by snap 402 to snap 402a which is in a depending portion of the top wall 400f. Top wall 400f is permanently attached at its bottom to the top of rear wall 400e so that it also is a flap. Side walls 400b and 400c have have extensions 400bb and 400cc and front foldable extensions 400dd and 400ee. Accordingly when snap 402 is engaged with snap 402a flap 418 fits against flaps 400cc and 400dd and top flap 400f • covers side wall flaps 400bb and 400cc. There are preferably fastener means that are readily detachable as for example, hook and loop fabric means such as Velcro 422, 423 and 402b on the outer surfaces of the flaps to permit a smooth disengagement when the front is opened by the individual pulling pull tab 401. The rear wall 400e of the container has stitched loops 403 and 404 for attachment to belts or other suitable parts of clothing. Stored within the container is an inflatable horseshoe- shaped flotation device 413. Flotation device 413 is attached by lanyard 412 which in turn is connected by snap hook 411 to metal ring 410 which in turn is attached to the back wall 400e of the container by stitching 405. It can be thus seen that at all times the flotation device is connected to the container 400 which in turn is attached to the person 400a. Attached to the front pull flap 418 is an operating lanyard 406 which with clasp 407 is attached to one end of cam crank 419. When the tab 401 is pulled, it causes the cam-shaped lever 419 to rotate by its cut-out portion 424a on pin 424 so as to drive puncture pin 426 into the carbon dioxide reservoir 409 and then separate from pin 424. The carbon dioxide gas enters through valve opening 425 and valve 420 and quickly inflates the horseshoe-shaped flotation device 413. A mouth piece 414 is provided as a safety device for re-inflating the flotation device. The flotation device 413 is provided with a nylon belt 416 having an adjustable buckle 414, a belt handle 417, an eyelet 417a and a length-adjusting buckle 421. Thus, when the man equipped with the flotation device jumps into the water he can either before or after he hits the water actuate the device by pulling on the front flap 418 and be certain that at all times the inflated flotation device will be attached to him and readily adjustable for safety and comfort. An alternate method of automatic inflation is to use a water-soluble release. The release holds back a spring which when released drives the puncture pin 426 into the OMPI carbon dioxide reservoir 409. This could be of similar construction as shown in Fig. 10, including the manual activator 209. - ξjREAl C PI

Claims: CLAIMS 1. An emergency rescue assembly comprising a container attachable to a person, an inflatable flotation device stored within said container, automatic inflation means attached to said device, and release means attached to said container; said assembly being characterized in that pulling of said release means opens said container permitting said inflation means to inflate said device. 2. The assembly of Claim 1 wherein the container includes a front movable flexible wall and an upper movable wall having a foldable skirt extension; said front wall and extension being releasably secured to each other so that a downward pull on said front wall will detach it from said skirt permitting the inflatable device to inflate and leave the container. 3. The assembly of Claim 1 wherein said inflation means comprises stored gas under pressure having gas release means aσtuable by the pull on line means attached to said container. 4. An emergency rescue assembly comprising a container attachable to a person, an inflatable flotation device stored within said container, automatic inflation means attached to said device, and water-soluble release means; said assembly being characterized in that dissolving of said release means by water permits an inflation means to inflate said device. - RE O PI

Inventors: BURR KELSEY J, BURR, KELSEY, J.
Applicants: HALKEY ROBERTS CORP, HALKEY-ROBERTS CORPORATION
Application year: 1984
Main classification: B63C9
IPC codes: B63C9