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Publication numberUS3495565 A
Publication typeGrant
Publication dateFeb 17, 1970
Filing dateJun 11, 1968
Priority dateJun 11, 1968
Publication numberUS 3495565 A, US 3495565A, US-A-3495565, US3495565 A, US3495565A
InventorsGustavii Erik Verner
Original AssigneeGustavii Erik Verner
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Post intended for mooring boats or for analogous purposes
US 3495565 A
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Description  (OCR text may contain errors)

United States Patent O 3 495,565 POST INTENDEDFOR MOORING BOATS OR FOR ANALOGOUS PURPOSES Erik Verner Gustavii, 25 Bymarksgatan, 552 59 Jonkoping, Sweden Filed .lune 11, 1968, Ser. No. 736,207 Int. Cl. B631) 21/00; E02b 3/22 U.S. Cl. 114-230 3 Claims ABSTRACT OF 'IHE DISCLOSURE The present invention relates to a post for mooring a boat, for example.

Mooring posts should withstand the vertically acting forces of ice which forms in many harbors, instead of allowing these forces to act on the posts which is the disadvantage of most conventional mooring posts.

An object of the present invention is to provide a post intended for mooring a boat or for analogous purposes in which the above disadvantage is reduced or eliminated.

According to the present invention, there is provided a post for mooring boats and analogous purposes, the combination of a first part for implanting in a surface below the water level and a second part above the first part and cooperable therewith to be displaceable relative to said iirst part whereby when said first part is implanted so that said second part is capable of projecting above a water surface, a volumetric displacement of the portion of said second part below said water level is smaller than the total weight of said second part so that said second part drops to a predetermined position when a lifting force ceases.

The invention will now be described in more detail by way of example with reference to the accompanying drawings, in which:

FIGURE 1 is an elevation of one example of a post according to the invention, surrounded by ice, and

FIGURE 2 is a cross-section of another example of a post according to the invention.

1n both examples of the invention a mooring post comprises a portion 1, having a pointed lower end 2 so that it may be driven into the ground. Near the upper end of the portion 1 there is secured, by welding for example, an annulus 3 of flat or circular section. The section above the annulus is received in the bore of a tubular upper portion 5 of the post, the bore of which is of larger cross-sectional area than the lower portion 1 so that the upper portion 5 is capable of moving relatively to the lower portion 1 but the diameter of which is less than the diameter of the annulus 3.

The upper portion 5 is arranged to project above the surface level of water and is so dimensioncd that the ICC volumetric displacement of the parts situated below the surface of the water is smaller than its total weight.

If the upper portion 5 is frozen solid with ice in the winter, the upper portion 5 can move relatively to the lower portion 1 with vertical movement of the ice. After the portion 5 has been freed from the ice, for example when the ice breaks up, the portion 5 drops again to its planned position relative to the portion 1 implanted below the surface of the water.

To facilitate vertical movement of the upper portion 5, a helical spring 4, may be provided on the portion 1 seating on the annulus 3 and on which bears the lower end of the portion 5.

A mooring bracket is secured on the upper portion as shown at 7.

The invention may be modified within the scope of its principle as shown in FIGUR-E 2. Instead of employing a coil spring 4 resting on an annulus 3, the spring may be situated on the top of the portion 1 and within the upper tubular portion 5, which latter may be solid above the spring as shown in FIGURE 2. In a post of this kind, the portions 1 and 5 possess a core 8 and 9, respectively, which is sheathed with a tube 10 and 11, respectively, made of plastic material, for example. As shown, the upper portion has its lower part encased in a plastic tube 12 into which the lower portion is partially inserted. In this case, the spring 4 is situated within the tube 12 and on the top of the lower portion 1. The spring 4 and the bracket 7 may be coated with plastic material. The upper portion may be ballasted by means of a concrete core 13.

I claim:

1. A post for mooring boats and analogous purposes, comprising a first part for implanting in a surface below the water level, and a second part above said first part and cooperable therewith to be displaceable relative to said lirst part whereby when said first part is implanted so that said second part is capable to projecting above a water surface, a volumetric displacement of the portion of said second part below the water level is smaller than the total weight of said second part so that said second part drops to a predetermined position when a lifting force ceases.

2. The combination as claimed in claim 1, including resilient means operably related to said first and second parts for biasing said second part relative to said first part.

3. The combination as claimed in claim 2, wherein said resilient means is seated on annular means surrounding and secured to said first part.

References Cited UNITED STATES PATENTS 2,581,676 1/1952 Loaney 114--230 3,180,099 4/ 1965 Mikolajczyk et al 61-54 3,188,816 6/1965 Koch 61-54 X TRYGVE M. BLIX, Primary Examiner U.S. Cl. X. R. 61-54

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2581676 *Aug 11, 1948Jan 8, 1952Loaney William TBoat mooring apparatus
US3180099 *May 27, 1963Apr 27, 1965Piatkowski Frank JPile protector
US3188816 *Sep 17, 1962Jun 15, 1965Koch & Sons Inc HPile forming method
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4110989 *May 16, 1977Sep 5, 1978Thomas SelkirkPiling fabricated from synthetic material
US4721418 *Dec 15, 1986Jan 26, 1988Queen Frankie A RFriction barrier pile jacket
US4726313 *Apr 19, 1985Feb 23, 1988Harry NealMooring boats
US4923336 *Jul 19, 1988May 8, 1990Schmidt Industries, Inc.Dock supporting apparatus
US5650224 *Oct 3, 1996Jul 22, 1997Seaward International, Inc.Elongated structural member and method and appartus for making same
US5658519 *Jun 7, 1995Aug 19, 1997Seaward International, Inc.Reinforced plastic piling and method and apparatus for making same
US5806453 *May 2, 1997Sep 15, 1998Cook; Thomas E.For waterborne craft
Classifications
U.S. Classification114/230.1, 405/211
International ClassificationE02B3/20, E02B3/24
Cooperative ClassificationE02B3/24
European ClassificationE02B3/24