GB2165198A - Inflatable sea anchor - Google Patents

Inflatable sea anchor Download PDF

Info

Publication number
GB2165198A
GB2165198A GB08425331A GB8425331A GB2165198A GB 2165198 A GB2165198 A GB 2165198A GB 08425331 A GB08425331 A GB 08425331A GB 8425331 A GB8425331 A GB 8425331A GB 2165198 A GB2165198 A GB 2165198A
Authority
GB
United Kingdom
Prior art keywords
collar
drogue
sea anchor
inflatable
anchor
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.)
Granted
Application number
GB08425331A
Other versions
GB2165198B (en
GB8425331D0 (en
Inventor
Leo William Risbridger
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 GB08425331A priority Critical patent/GB2165198B/en
Publication of GB8425331D0 publication Critical patent/GB8425331D0/en
Publication of GB2165198A publication Critical patent/GB2165198A/en
Application granted granted Critical
Publication of GB2165198B publication Critical patent/GB2165198B/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/24—Anchors
    • B63B21/48—Sea-anchors; Drogues

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Piles And Underground Anchors (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

A sea anchor has a collar 2 which is attached to the wide end of the drogue 1 the collar being inflatable by means of valve 3 for immediate use. A ballast weight 4 is provided attached to the bottom of the drogue in order that the sea anchor will float just below the water surface for maximum drag, and prevent drogue rotation and fowling on the sea bed. <IMAGE>

Description

SPECIFICATION Inflatable sea anchor This invention relates to an inflatable sea anchor.
Sea anchors are used to keep boats headed into the wind when they have lost their means of propulsion, thus they prevent the boat taking in water.
A sea anchor consists of a drogue towed on a line behind the boat.
The front end of the drogue is usually kept open against the water pressure by the use of a rigid iron collar. This however makes the anchor cumbersome and thus they are not often carried by boats especially small ones.
According to the present invention there is provided an inflatable collar secured to the drogue of the sea anchor. The collar is capable of being inflated or deflated through a valve by means of an air pump or gas cylinder. The drogue is also fitted with a balast weight which with the inflated collar provides neutral buoyancy.
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawing in which: Figure 1 shows in perspective, the sea anchor with the collar fully inflated.
Referring to the drawing the sea anchor comprises a drogue 1 and an inflatable collar 2 which is secured to the wide end of the drogue. A balast weight 4 is provided secured to the bottom of the drogue. In order to deflate the anchor the valve 3 is opened and the collar 2 colapses. To reflate the anchor an air pump or gas cylinder is attached to the valve 3 until the collar 2 becomes rigid again.
In order that the sea anchor will float just below the surface of the water, the balast weight 4 is of such a weight as to provide neutral buoyancy when the collar 2 is inflated.
1. An inflatable sea anchor comprising an inflatable collar secured to the drogue of the sea anchor. The collar is capable of being inflated or deflated through a valve by means of an air pump or gas cylinder.
2. An inflatable sea anchor as claimed in claim 1 wherein a balast weight is provided, which with the inflated collar gives neutral buoyancy, in order that the sea anchor may float just below the water surface horizontal to the towing craft and in order that the drogue may not rotate.
New claims or amendments to claims filed on 28.2.85 Superseded claims 1 and 2 New or amended claims 1. An inflatable sea anchor comprising an inflatable collar secured to a drogue fitted with a balast weight, which when the collar is inflated gives neutral buoyancy, in order that the sea anchor may float just below the water surface horizontal to the towing craft and in order that the drogue may not rotate.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (1)

  1. **WARNING** start of CLMS field may overlap end of DESC **.
    SPECIFICATION Inflatable sea anchor This invention relates to an inflatable sea anchor.
    Sea anchors are used to keep boats headed into the wind when they have lost their means of propulsion, thus they prevent the boat taking in water.
    A sea anchor consists of a drogue towed on a line behind the boat.
    The front end of the drogue is usually kept open against the water pressure by the use of a rigid iron collar. This however makes the anchor cumbersome and thus they are not often carried by boats especially small ones.
    According to the present invention there is provided an inflatable collar secured to the drogue of the sea anchor. The collar is capable of being inflated or deflated through a valve by means of an air pump or gas cylinder. The drogue is also fitted with a balast weight which with the inflated collar provides neutral buoyancy.
    A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawing in which: Figure 1 shows in perspective, the sea anchor with the collar fully inflated.
    Referring to the drawing the sea anchor comprises a drogue 1 and an inflatable collar 2 which is secured to the wide end of the drogue. A balast weight 4 is provided secured to the bottom of the drogue. In order to deflate the anchor the valve 3 is opened and the collar 2 colapses. To reflate the anchor an air pump or gas cylinder is attached to the valve 3 until the collar 2 becomes rigid again.
    In order that the sea anchor will float just below the surface of the water, the balast weight 4 is of such a weight as to provide neutral buoyancy when the collar 2 is inflated.
    1. An inflatable sea anchor comprising an inflatable collar secured to the drogue of the sea anchor. The collar is capable of being inflated or deflated through a valve by means of an air pump or gas cylinder.
    2. An inflatable sea anchor as claimed in claim 1 wherein a balast weight is provided, which with the inflated collar gives neutral buoyancy, in order that the sea anchor may float just below the water surface horizontal to the towing craft and in order that the drogue may not rotate.
    New claims or amendments to claims filed on 28.2.85 Superseded claims 1 and 2 New or amended claims
    1. An inflatable sea anchor comprising an inflatable collar secured to a drogue fitted with a balast weight, which when the collar is inflated gives neutral buoyancy, in order that the sea anchor may float just below the water surface horizontal to the towing craft and in order that the drogue may not rotate.
GB08425331A 1984-10-08 1984-10-08 Inflatable sea anchor Expired GB2165198B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08425331A GB2165198B (en) 1984-10-08 1984-10-08 Inflatable sea anchor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08425331A GB2165198B (en) 1984-10-08 1984-10-08 Inflatable sea anchor

Publications (3)

Publication Number Publication Date
GB8425331D0 GB8425331D0 (en) 1984-11-14
GB2165198A true GB2165198A (en) 1986-04-09
GB2165198B GB2165198B (en) 1988-02-03

Family

ID=10567840

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08425331A Expired GB2165198B (en) 1984-10-08 1984-10-08 Inflatable sea anchor

Country Status (1)

Country Link
GB (1) GB2165198B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988006117A1 (en) * 1987-02-17 1988-08-25 William John Abernethy Improved sea anchor or drogue
AU620323B2 (en) * 1987-02-17 1992-02-20 William John Abernethy Improved sea anchor or drogue
US5241922A (en) * 1991-11-07 1993-09-07 Allen Susie M Collapsible sea anchor
US6694909B1 (en) * 2002-08-08 2004-02-24 The United States Of America As Represented By The Secretary Of The Navy Hydraulic activated toroidal aperture generation system
WO2013165329A1 (en) 2012-05-02 2013-11-07 Goegues Arif Alpay An anchor for the vessels

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1104726A (en) * 1965-04-16 1968-02-28 Tatsusaburo Hibi Parachute assemblies mounted on an aircraft
GB1552152A (en) * 1975-11-24 1979-09-12 Bucker H O Inflatable parachute
GB2122149A (en) * 1982-06-24 1984-01-11 David Sydney Smith Parachute and hang glider safety device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1104726A (en) * 1965-04-16 1968-02-28 Tatsusaburo Hibi Parachute assemblies mounted on an aircraft
GB1552152A (en) * 1975-11-24 1979-09-12 Bucker H O Inflatable parachute
GB2122149A (en) * 1982-06-24 1984-01-11 David Sydney Smith Parachute and hang glider safety device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988006117A1 (en) * 1987-02-17 1988-08-25 William John Abernethy Improved sea anchor or drogue
AU620323B2 (en) * 1987-02-17 1992-02-20 William John Abernethy Improved sea anchor or drogue
US5241922A (en) * 1991-11-07 1993-09-07 Allen Susie M Collapsible sea anchor
US6694909B1 (en) * 2002-08-08 2004-02-24 The United States Of America As Represented By The Secretary Of The Navy Hydraulic activated toroidal aperture generation system
WO2013165329A1 (en) 2012-05-02 2013-11-07 Goegues Arif Alpay An anchor for the vessels

Also Published As

Publication number Publication date
GB2165198B (en) 1988-02-03
GB8425331D0 (en) 1984-11-14

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19921008