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Tire slip preventing construction formed on floor plate
| Details |
Inventors: Iwami, Takaharu; Iwami, Geniti;
Assignee: Naigai Technica Co., Limited (Kyoto, JP)
Primary Examiner: Canfield; Robert
Assistant Examiner:
Attorney, Agent or Firm: Armstrong, Westerman, Hattori, McLeland & Naughton
A tire slip-preventing construction formed on a floor plate to be installed as a floor surface of a self-running type sky parking-place or as a surface of a road being repaired comprising a floor plate main body made of a rectangular steel plate. A plurality of slip preventing portions is formed on the upper surface of the floor plate main body as a slip preventing portion. The projection portion comprises a first projection and a second projection extending from a certain point disposed on the first projection toward a certain point disposed on the upper surface of the floor plate main body. Preferably, the first projection, the second projection, and the floor plate main body are integral with each other. As the slip preventing portion, a sheet-shaped slip preventing material layer comprising silica sand and a coating material may be formed on a concave formed in the floor plate main body. |
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DETAILED DESCRIPTION It is accordingly an object of the present invention to provide a tire slip-preventing construction, formed on a floor plate, which reliably prevents a tire of a car from slipping and is capable of preventing rainwater from dropping downstairs.
In accomplishing these and other objects of the present invention, there is provided a tire slip-preventing construction formed on a floor plate comprising a floor plate main body; and a slip preventing portion formed on an upper surface of the floor plate main body.
The slip preventing portion includes a plurality of projection portions.
A part of corners of each projection portion forms 90.
degree.
.
Preferably, the projection portion comprises a first projection formed on the upper surface of the floor plate main body; and a second projection formed on the upper surface of the first projection portion and that of the floor plate main body, with the second projection extending from a certain point disposed on one side of the first projection toward a certain point disposed on the upper surface of the floor plate main body.
The first projection may comprise a wide portion disposed on one side thereof and a narrow portion disposed on the other side thereof.
Both side surfaces of the narrow portion are inclined symmetrically.
Preferably, a plurality of the projection portions forming a group is arranged dot-symmetrically.
A plurality of the projection portions forming a group may be arranged dot-symmetrically, with the second projections directed toward the center of dot-symmetry.
Preferably, four projection portions forming a group is arranged dot-symmetrically, with the second projections directed toward the center of dot-symmetry.
Preferably, a plurality of groups each consisting of a plurality of the projection portions is formed at regular interval on the upper surface of the floor plate main body in a lengthwise direction thereof.
A plurality of the floor plate main bodies narrow and long is arranged to form a floor surface
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