JPS5844852Y2 - reinforced float - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a novel float.

Floats made from various materials are already known.

Among them, hollow floats like glass bottles are vulnerable to shocks.
Synthetic resin foams, particularly polystyrene foams, are lightweight and have excellent buoyancy, making them suitable for floats, but they have the drawbacks of low strength, easy breakage, and poor durability.

Although ferrocement has excellent impact resistance and durability and is a suitable material for floats, it is not possible to obtain strong hollow objects using this material without using a core material.

As a result of research to obtain a strong float by taking advantage of the excellent properties of ferrocement, the present inventor discovered that an extremely suitable reinforced float can be made by coating the surface of a specific hollow core material with a layer of ferrocement. This led to the completion of this invention.

In the present invention, a lid made of synthetic resin foam with a spherical outer surface is attached to both ends of a pipe made of paper, metal, or synthetic resin, and a fitting that forms a through hole is tightly attached to the lid. The object of the present invention is to provide a reinforced float characterized in that the entire outer layer except the through holes is coated with ferrocement.

The pipes used in the reinforced float of the present invention are made of steel, aluminum, alumite, other metals, or alloys thereof, or synthetic resins such as polyvinyl chloride, polystyrene, polyethylene, and polypropylene, or foams thereof, or cardboard pieces, corrugated paper, Other so-called stiff papers are used.

These pipes constitute a support when a layer of ferrocement is coated on the surface thereof, and only need to have sufficient shape retention, so it is sufficient to have an extremely thin thickness.

Both ends of the pipe are covered with lids made of synthetic resin foam.

This synthetic resin foam is made by foaming resins such as polystyrene, polyethylene, polypropylene, rigid polyurethane, polyvinyl chloride, copolymers of these resins, or mixed resins, and is a synthetic resin with closed cells. Resin foam is preferably used.

Preferably, the outer surface of the synthetic resin foam when the lid is closed is formed into a spherical shape.

This makes it easy to uniformly coat the surface with ferrocement, and the float has strong resistance to impact, which is effective in reducing resistance to wind waves and the like.

Ferrocement uses wire mesh as a reinforcing material, and cement and
It is a composite material coated with mortar and has excellent properties such as impact resistance and corrosion resistance.

If the reinforced float of the present invention is explained with reference to the drawings, 1 is a pipe made of hard polyvinyl chloride.

2 is polystyrene foam. polystyrene foam 2
constitutes a lid that is fitted and closed on both ends of the pipe 1, and the outer surface of the lid is formed into a spherical shape.

A ferrocement layer 4 is coated on the outer surface of the core material of the hollow 3, which has lids on both ends of the pipe 1.

5 is a through hole for fixing with a string, rope, etc.

The fitting 6 that forms the through hole 5 is made of synthetic resin such as polyethylene, polypropylene, polyvinyl chloride, polyester resin, or nylon, or a metal that is not eroded by seawater, and is in close contact with the surface of the polystyrene foam 2. By covering the adhesion surface with a layer of ferrocement at the same time as the surface of the polystyrene foam 2, firm attachment is achieved.

Reference numeral 7 denotes a recess provided in a band shape around the float for fastening a rope. When this recess 7 is provided, it is not necessarily necessary to attach the fixture 4 to form the through hole 5. do not have.

The thickness of the ferrocement layer 4 can be freely increased by repeating coating.

The ferrocement layer has good impact resistance and excellent corrosion resistance, so there is no need to make it very thick.

Usually, a thickness of several mm to 10-odd mm is sufficient.

The reinforced float of the present invention has both ends of a pipe 1 covered to form a hollow 3, and is extremely lightweight and has strong buoyancy.

Moreover, the surface of the core material made of the covered pipe is coated with a layer of ferrocement, forming a strong float with excellent impact resistance and corrosion resistance.

Ferrocement is strong and has no risk of hardening, but even if it cracks, water will not seep into the interior, and by applying multiple coats, the cracks will not reach the inner layers. Furthermore, by coating the ferrocement layer with paint, cracks and the like can be easily repaired.

The reinforced float of the present invention is strong and has strong buoyancy as described above, and is extremely suitable as a buoyancy for fishing, tagging, and aquaculture rafts or fixed nets.

[Brief explanation of the drawing]

The drawings illustrate the reinforced float of the present invention, and FIG. 1 is a sectional view of the reinforced float. The main symbols in the drawings are as follows. 1...Pipe, 2...Polystyrene foam, 3...Hollow, 4...Ferrocement layer, 5...Through hole, 6...Mounting tool, 7...Recess.

Claims (4)

[Scope of utility model registration request] (1) A lid made of synthetic resin foam with a spherical outer surface is placed on both ends of a pipe made of paper, metal, or synthetic resin, and a fitting that forms a through hole is tightly attached to the lid. ,
A reinforced float characterized in that the entire outer layer except the through holes is coated with ferrocement. (2) Claims for utility model registration in which the pipe is made of paper or a metal made of iron, copper, aluminum, alumite, or an alloy thereof, or a synthetic resin such as polyvinyl chloride, polystyrene, polyethylene, or polypropylene. Reinforced float described in item 1. (3) Synthetic resin foam is polystyrene, polyethylene,
The reinforced float according to claim 1, which is a foam of polypropylene, polyurethane, polyvinyl chloride, or a copolymer or mixed resin of these resins. (4) The reinforced float according to claim 1, wherein the attachment is made of polyethylene, polypropylene, polyvinyl chloride, polyester resin, or a metal that is not eroded by seawater.