GB2390638A - Pin preventing accidental release of lifeboat supporting hook - Google Patents

Pin preventing accidental release of lifeboat supporting hook Download PDF

Info

Publication number
GB2390638A
GB2390638A GB0216190A GB0216190A GB2390638A GB 2390638 A GB2390638 A GB 2390638A GB 0216190 A GB0216190 A GB 0216190A GB 0216190 A GB0216190 A GB 0216190A GB 2390638 A GB2390638 A GB 2390638A
Authority
GB
United Kingdom
Prior art keywords
lifeboat
hook
release
hooks
items
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.)
Withdrawn
Application number
GB0216190A
Other versions
GB0216190D0 (en
Inventor
John Diamond
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB0216190A priority Critical patent/GB2390638A/en
Publication of GB0216190D0 publication Critical patent/GB0216190D0/en
Publication of GB2390638A publication Critical patent/GB2390638A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B23/00—Equipment for handling lifeboats or the like
    • B63B23/40—Use of lowering or hoisting gear
    • B63B23/42—Use of lowering or hoisting gear with braking equipment
    • B63B23/46—Use of lowering or hoisting gear with braking equipment in the boat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B45/00—Hooks; Eyes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

A lifting hook 1 attached to a lifeboat on a ship or offshore installation is prevented from being released accidentally by a pin 11. The pin 11 extends through holes in the cheek plates 03 of the hook 1 to prevent rotation of the hook 1 even if the hook release mechanism is activated. Removal of the pin 11, which can be retro fitted to existing installations, allows the hook 1 to be operated normally.

Description

DESCRIPTION
A device to prevent the accidental release of a lifeboat on a ship or offshore installations, fixed or mobile. This device is to ensure that the lifeboats lifting hooks are properly closed and cannot accidentally open when the boat is being lifted on board the ship or offshore installation. The device will also allow safe maintenance to the lifeboat hooks without the risk of accidental release. The device will also ensure the lifeboat hooks do not open while the boat is being lowered to the water during drills or emergency evacuation. The device consists of a steel locking pin known as the SURELOCK PIN, which will be inserted through a suitable size hole drilled through the cheek plates and hooks preventing the hook from opening under any load condition. The steel locking pin known as the SURELOCK PIN will prevent the hooks from being released even if the on-load release system is operated.
The steel locking pin known as the SURELOCK PIN will be removed when the lifeboat is hilly waterborne allowing the hooks lo be released and -he lifeboat to manoeuvre away from the vessel or installation.
DRAWINGS
Figure 1 This figure shows the present system fitted to most ships and oil rig lifeboats and is known as the on-load release hook. Items 03 and 09 are the fore and aft lifting hooks These hooks are the attachment of the lifeboat to the lifting appliance on the ship or offshore installation. This system allows the hooks to be opened by over-riding the internal locking mechanism item 05 by lifting indicator lever item 06 and by pushing release lever item 07 the release cables items 04 and 07, turn cam items 02 and 10 allowing both hooks items 01 and 08 to pivot thus allowing both hooks items 01 and 08 to open.
Figure 2 This figure shows the device Items 11 and 12 fitted preventing the hooks from being opened The device will not allow the hooks items 01 and 08 to pivot thus preventing the hooks from being released. The device items 11 and 12 will prevent the hooks items 01 and 08 from opening even if the internal locking mechanism 05 is over-
ridden by lifting the indictor lever item 06 and pushing the release lever 07.
Figure 3 This figure shows the present system fitted to most ships and offshore installations.
Items 03 and 09 represent the forward and aft hook mounted in most lifeboats installed on ships and offshore installations. These are operated by a release lever as shown in figure l items 05, 06 and 07. Once the release lever has been operated even if the craft is manned and suspended on the ship or offshore installation the hooks, items 01 and 08 will open and the lifeboat will fail to the sea. This procedure of releasing the hooks while still suspended from the vessel is known as "onload release". To accidentally or deliberately perform the procedure when the boat is out of the water will all most certainly result in personal injury or even death.
Figure 4 This figure shows the device items 11 and 12 installed through the lifting hook items 03 and 09 and through the release hooks items 01 and 08. When the device items 11 and 12 are installed the release hook items 01 & 08 cannot rotate and therefore cannot open. If the on-load release option is performed by over-riding the internal locking mechanism figures, item 05 by lifting indicator lever item 06 and by pushing release lever item 07 the release cables items 04 and 07 turn cam items 02 and 10 the release hook items 01 and 08 will not pivot thus the lifeboat will not be released.
- List of item numbers for figures 1 to 4 ITEM NO. 12
1. Aft Release Hook 2. Aft Release Cam 3. Aft Lifting Hook 4. Aft Hook Releases Cable 5. Release Mechanism 6. Release Over-ride Lever 7. Release Lever 8. Forward Release Hook 9. Forward Lifting Hook 10. Forward Release Cam 11. Aft Safelock Safely Pin 12. Fwd Safelock Safety Pin

Claims (6)

1. A device to prevent accidental release of the lifting hook of a lifeboat during recovery, hoisting, lowering and stowage aboard a ship or offshore installation.
2. A device which can be quickly removed when the lifeboat has been lowered to the water.
3. A device which will allow safe maintenance of lifeboat lifting hooks when the boat is suspended from a ship of offshore installation.
4. A device which can easily be retro-fitted to existing lifeboats.
5. A device which can easily be removed to allow on-load release of a lifeboat.
6. A device which will ensure the lifeboat lifting hooks are correctly locked before lifting or lowering of the lifeboat.
h
GB0216190A 2002-07-12 2002-07-12 Pin preventing accidental release of lifeboat supporting hook Withdrawn GB2390638A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0216190A GB2390638A (en) 2002-07-12 2002-07-12 Pin preventing accidental release of lifeboat supporting hook

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0216190A GB2390638A (en) 2002-07-12 2002-07-12 Pin preventing accidental release of lifeboat supporting hook

Publications (2)

Publication Number Publication Date
GB0216190D0 GB0216190D0 (en) 2002-08-21
GB2390638A true GB2390638A (en) 2004-01-14

Family

ID=9940316

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0216190A Withdrawn GB2390638A (en) 2002-07-12 2002-07-12 Pin preventing accidental release of lifeboat supporting hook

Country Status (1)

Country Link
GB (1) GB2390638A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20091014A1 (en) * 2009-12-21 2011-06-22 Bg Safe S R L SYSTEM FOR LIFTING AND AMMAIN OF A RESCUE LANCE PROVIDED WITH AN ANTI-FALL DEVICE

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1793401A (en) * 1930-01-25 1931-02-17 Seth H Hopkins Davit-tackle hook
GB2078291A (en) * 1980-06-16 1982-01-06 Whittaker Corp Disengaging apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1793401A (en) * 1930-01-25 1931-02-17 Seth H Hopkins Davit-tackle hook
GB2078291A (en) * 1980-06-16 1982-01-06 Whittaker Corp Disengaging apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20091014A1 (en) * 2009-12-21 2011-06-22 Bg Safe S R L SYSTEM FOR LIFTING AND AMMAIN OF A RESCUE LANCE PROVIDED WITH AN ANTI-FALL DEVICE
EP2338784A1 (en) 2009-12-21 2011-06-29 BG Safe S.r.l. Lifeboat hoisting and lowering apparatus provided with a fall preventing device

Also Published As

Publication number Publication date
GB0216190D0 (en) 2002-08-21

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)