Ships – Anchor – Sea anchor
Patent
1984-07-23
1986-01-07
Blix, Trygve M.
Ships
Anchor
Sea anchor
441 13, B63B 2148
Patent
active
045627886
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
(1) Field of the Invention
This invention relates to an improved sea-anchor or like device.
(2) Brief Description of the Prior Art
Sea-anchors or drag-anchors have long been known and made in a wide variety of forms, such a device being attached to a hawser paid out from a ship or boat to check the leeway of a drifting vessel or to prevent it from broaching-to.
SUMMARY OF THE PRESENT INVENTION
The general object of the present invention is to provide a device of this general character which may be used for the foregoing purposes and also to apply more or less constant restraint to a vessel running before a sea, and to serve as emergency steering means. A further object achievable in preferred embodiments of the invention is to provide such a device which may operate as an effective distress buoy with signaling means to assist and guide searchers.
With the foregoing and other objects in view the invention resides broadly in a sea-anchor or like device including a body; attachment means for attaching a hawser to the body; movable members on the body, and actuating means so connecting the attachment means to the movable members that when the application of predetermined tension through a hawser to the attachment means, the movable members are moved to increase the resistance of the body to passage through water. Preferably the body is hollow, with a number of ports therein, the movable members being closures therefor, the attachment means being movable longitudinally relative to the body, spring-loading means urging the closure to closed position, the actuating means acting to move the closures to open position against the action of the spring-loading means. As a restraint against spinning of the body in the water, preferably the body has water flow through passages from its front to its rear, and behind its rear an assembly of fins. Other features of the invention will become apparent from the following description.
BRIEF DESCRIPTION OF THE DRAWINGS
A preferred embodiment of the invention is shown in the accompanying drawings, wherein:
FIG. 1 is a side elevational view of a device according to the invention with its port closure plates fully closed,
FIG. 2 is a longitudinal sectional view of the device shown in FIG. 1,
FIG. 3 is a front end view of the device,
FIG. 4 is a rear end view of the device,
FIG. 5 is a sectional view similar to FIG. 2, but showing the port closure plates of the device fully opened,
FIG. 6 is a cross-sectional view of the device taken along line 6--6 in FIG. 5, and
FIG. 7 is a side elevational view of the device to reduced scale, in a vertical rather than horizontal position, to serve as a distress signalling device as well as a sea-anchor.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The device shown in the drawings includes a body 10 and a nose cone 11. The body 10 comprises a front part 12 and a rear part 13, the nose cone 11 when in normal retracted position as shown in FIGS. 1 and 2 forming, with the front part 12 of the body, a conical assembly increasing in diameter from front to rear, the rear part 13 of the body being of frusto-conical shape diminishing in diameter from front to rear. The nose cone 11 is preferably of stainless steel, but the front and rear parts 12 and 13 of the body may be of a tough moulded plastics material secured coaxially together in any suitable manner.
The nose cone 11 is fixed on the front end of a shaft 14 which is closely engaged in the axial bore of an internal boss 15 in the nose cone and secured by a diametral locking bolt 16. The nose cone shaft 14 enters the body 10 coaxially by way of a fore-end bush 17 passing through a central hole in the front of the body front part 12 and threadedly engaged in the front part of an axial tube 18 through the body 10, its rear end being engaged in a central hole in the back of the rear part 13 of the body and secured by a locking plug 19 screwed into the rear end of the axial tube and bearing on the back of the rear part 13 of the body.
The axial tube 18 is formed
REFERENCES:
patent: 2491564 (1949-12-01), Iversen
patent: 2940411 (1960-06-01), Bartels et al.
patent: 3755836 (1973-09-01), Milazzo
patent: 4096818 (1978-06-01), Wameling
Blix Trygve M.
Sotelo Jesus D.
LandOfFree
Sea anchor or changeable drag does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sea anchor or changeable drag, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sea anchor or changeable drag will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-106825