US3212111A - Inflatable dinghies - Google Patents

Inflatable dinghies Download PDF

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Publication number
US3212111A
US3212111A US283912A US28391263A US3212111A US 3212111 A US3212111 A US 3212111A US 283912 A US283912 A US 283912A US 28391263 A US28391263 A US 28391263A US 3212111 A US3212111 A US 3212111A
Authority
US
United States
Prior art keywords
buoyancy tube
dinghy
tube
gas
high pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US283912A
Other languages
English (en)
Inventor
Reffell Brian Richard Arnold
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Walter Kidde Ltd
Original Assignee
Walter Kidde Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Walter Kidde Ltd filed Critical Walter Kidde Ltd
Application granted granted Critical
Publication of US3212111A publication Critical patent/US3212111A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C9/00—Life-saving in water
    • B63C9/02—Lifeboats, life-rafts or the like, specially adapted for life-saving
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B7/00—Collapsible, foldable, inflatable or like vessels
    • B63B7/06—Collapsible, foldable, inflatable or like vessels having parts of non-rigid material
    • B63B7/08—Inflatable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C9/00—Life-saving in water
    • B63C9/02—Lifeboats, life-rafts or the like, specially adapted for life-saving
    • B63C9/04—Life-rafts
    • B63C2009/042—Life-rafts inflatable

Definitions

  • the unrolling or unfolding of the dinghy is effected by means of a high pressure tube or hose of small section which is secured to the buoyancy tube and to which gas is admitted under high pressure automatically when the dinghy is immersed in water.
  • Patent No. 3,080,582 there is described a system for the inflation of a dinghy operating on this principle.
  • the dinghy itself is provided with a normal peripheral buoyancy tube of relatively large section to which is secured a high pressure tube of relatively small section.
  • the unrolling of the dinghy is effected by inflation of the high pressure tube to a high pressure, say, 100 p.s.i. This causes the high pressure tube to straighten out as far as possible so as to assume a condition of maximum internal volume.
  • the buoyancy tube in the construction described in Patent No. 3,080,582 is inflated by release of gas from storage containers at a predetermined time interval after the initiation of the inflation of the high pressure tube, and, as is usual, only is inflated to a very low positive pressure.
  • the buoyancy tube is inflated by admission of gas at points on opposite sides of the dinghy.
  • the purpose of admitting gas at these spaced points was to overcome any tendency of the dinghy to overturn by reason of the two sides of the buoyancy tube becoming unequally inflated before completion of inflation.
  • the present invention is applicable to all personal-pack dinghies which are unrolled or unfolded automatically by the admission of gas under high pressure to a high pressure tube secured to a peripheral buoyancy tube, irrespective of whether the buoyancy tube is inflated from the same gas storage container as the high pressure tube or from a different gas storage container from the high pressure tube, as in the system described in Patent No. 3,080,582.
  • the present invention is furthermore applicable irrespective of Whether the high pressure tube is secured to the outer surface or the inner surface of the buoyancy tube.
  • the difliculty heretofore encountered is overcome by admitting gas to the buoyancy tube at one or more points at or close to one end of the dinghy and restricting the flow of gas in the buoyancy tube at both sides so that the buoyancy tube between the position or positions of gas entry and the points of restriction become fully inflated before the buoyancy tube becomes inflated towards the other end.
  • the buoyancy tube is evenly in flated at both sides of the dinghy and the risk of the dinghy overturning during inflation of the buoyancy tube is thereby greatly reduced.
  • the restriction in the buoyancy tube is preferably provided by means of a pair of baflles positioned approximately amidships on each side and each consisting of a truncated cone made of a flexible material and secured with its apex directed away from the inflation point.
  • cone restrictors may be used at a number of spaced positions along each side of the buoyancy tube, although a single restrictor at approximately the midpoint of each side or branch of the buoyancy tube is generally found to be sufficient to equalise the inflation of the two sides of the buoyancy tube.
  • the dinghy shown in the drawing is a conventional one-man dinghy carried as a personal pack and is intended for the head and shoulders of the occupant to be at the bow end and for his feet to be at the stern end.
  • the dinghy comprises a buoyancy tube 1 and a floor 2.
  • a small-diameter high-pressure tube 3 is secured to the outer surfaces of the buoyancy tube 1.
  • the tube 3 is provided with a means for inflating it to a high pressure automatically when it is immersed in water, but is not shown herein since it forms no part of the present invention.
  • the buoyancy tube 1 is inflated from a gas storage container 4.
  • the release of gas from the storage container 4 is initiated in a suitable manner, such as that described in detail in Patent No. 3,080,582, and is preferably initiated after the dinghy has been completely unfolded by infiation of the high pressure tube 3.
  • Gas from the storage container 4 enters the buoyancy tube 1 at an admission point 5 and commences to inflate the buoy ancy tube 1 which is still flattened.
  • the admisison point 15 is at about the midpoint of the stern.
  • each restrictor 6 which consists of a truncated cone of rubber or rubberized fabric.
  • the aperture at the apex of each restrictor 6 is preferably quite substantial, since the function of the restrictor is to check the flow of gas into the forward part of the buoyancy tube 1 so as to ensure that both sides of the buoyancy tube to the rear of the restrictors 6 is fully inflated before extensive inflation of the forward part of the buoyancy tube can take place at either side. To achieve this result, it is necessary that there be only a very slight pressure drop across the restrictors 6.
  • the restrictors 6 may be secured in the buoyancy tube by stitching or by means of adhesives or any other suitable means.
  • the conical restrictors are readily collapsed to a substantially flat condition when the dinghy is folded up and stowed within a pack cover in the manner conventional for personal pack dinghies.
  • An inflatable dinghy adapted to be carried on the person of an airman comprising a peripheral buoyancy tube having bow and stern ends and sides in gas flow communication, a high pressure tube secured to said buoyancy tube for the purpose of unfolding the dinghy automatically on the admission of gas under high pres sure to said high pressure tube, means for admitting gas to said buoyancy tube at the mid-point of one said end of the dinghy to introduce gas into both said sides of said buoyancy tube, and flow restricting means positioned in said buoyancy tube at corresponding positions at each side of the dinghy about midway between the ends thereof to ensure complete inflation of said buoyancy tube between said gas admission point and said restricting means before substantial inflation of said buoyancy tube beyond said restricting means takes place.
  • each restricting means is constituted by a truncated cone of flexible material having an opening at the apex thereof and being secured inside said buoyancy tube, the apex 11/58 Manhart 911.1 3/63 Reflell 92 FOREIGN PATENTS 504,897 12/54 Italy. 887,940 1/ 62 Great Britain. 891,300 3/62 Great Britain.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Toys (AREA)
US283912A 1962-06-01 1963-05-28 Inflatable dinghies Expired - Lifetime US3212111A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB21292/62A GB983046A (en) 1962-06-01 1962-06-01 Improvements in or relating to inflatable dinghies

Publications (1)

Publication Number Publication Date
US3212111A true US3212111A (en) 1965-10-19

Family

ID=10160424

Family Applications (1)

Application Number Title Priority Date Filing Date
US283912A Expired - Lifetime US3212111A (en) 1962-06-01 1963-05-28 Inflatable dinghies

Country Status (4)

Country Link
US (1) US3212111A (de)
DE (1) DE1235765B (de)
DK (1) DK104667C (de)
GB (1) GB983046A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11548601B2 (en) 2019-11-04 2023-01-10 Crusoe Survival, Llc Multi-chamber inflatable device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007050675A1 (de) * 2007-07-12 2009-01-15 Jutta Biedermann Schwimmbrett-bag aufblasbar

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2859457A (en) * 1955-07-05 1958-11-11 Charles E Manhart Life rafts
GB887940A (en) * 1959-02-23 1962-01-24 Rfd Co Ltd Improvements in or relating to life-rafts and like articles intended to be inflated on water
GB891300A (en) * 1957-10-10 1962-03-14 Kidde Walter Co Ltd Improvements in or relating to inflatable dinghies
US3080582A (en) * 1959-11-30 1963-03-12 Kidde Walter Co Ltd Inflatable dinghies

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE559905A (de) *
US2639750A (en) * 1951-03-07 1953-05-26 Wingfoot Corp Inflating means
FR1179844A (fr) * 1957-07-25 1959-05-28 Frankenstein & Sons Manchester Radeau de sauvetage
GB837094A (en) * 1957-11-13 1960-06-09 Frankenstein & Sons Manchester Improvements in or relating to inflatable structures
FR1222851A (fr) * 1958-02-04 1960-06-14 Ballonfabrik Augsburg Canot pneumatique de sauvetage
FR1274287A (fr) * 1959-11-30 1961-10-20 Kidde Walter Co Ltd Canot pneumatique à dépliage automatique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2859457A (en) * 1955-07-05 1958-11-11 Charles E Manhart Life rafts
GB891300A (en) * 1957-10-10 1962-03-14 Kidde Walter Co Ltd Improvements in or relating to inflatable dinghies
GB887940A (en) * 1959-02-23 1962-01-24 Rfd Co Ltd Improvements in or relating to life-rafts and like articles intended to be inflated on water
US3080582A (en) * 1959-11-30 1963-03-12 Kidde Walter Co Ltd Inflatable dinghies

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11548601B2 (en) 2019-11-04 2023-01-10 Crusoe Survival, Llc Multi-chamber inflatable device

Also Published As

Publication number Publication date
DE1235765B (de) 1967-03-02
DK104667C (da) 1966-06-13
GB983046A (en) 1965-02-10

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