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    • 1. 发明专利
    • DRAINAGE MATERIAL FOR WORK
    • JPH08199548A
    • 1996-08-06
    • JP1301895
    • 1995-01-30
    • TOYO BOSEKISENI DOBOKU KAIHATSU KKOHBAYASHI CORP
    • NISHIDA TAKASHISHIMIZU MASARUNISHIBAYASHI KIYOSHIGETAKAHASHI SHINICHI
    • E02B11/00E01C9/08E02D3/10E02D17/18E02D29/02
    • PURPOSE: To maintain a sufficient drainage function and loading durability over an extended period of time and to make it possible to easily endure water flowability by providing a coarse meshed filter material capable of passing through fine particles of surface soil to the surface of a core material with compressive strength capable of bearing upper mounted load, water flowability and thickness. CONSTITUTION: Water or rain water contained in surface soil or ground water permeated from a bedrock is made to flow inside a core material 16 of which a drainage material is formed, and it flows down to drain toward a drainage equipment through the core material 16. By providing the core material with specific compressive strength and thickness, even if upper mounted load such as the surface soil like filling, subbase course material, etc., or car, etc., for work passing on a temporary road is loaded, water section is maintained without being damaged. By a meshed filter material 17 on the surface of the core material 16, fine particles from the surface soil or the peripheral bedrock pass through inside that core material 16, and stoppage of fine particles is avoided to prevent loading. A filter protection material 18 is also provided to the surface of the filter material 17, or the filter material 17 is infiltrated with synthetic resin as well as the application of the synthetic resin is made thereto and is reinforced to prevent damage, and durability of the drainage material 10 is promoted.
    • 5. 发明专利
    • NET BAG FOR FOOT PROTECTION
    • JPH1150428A
    • 1999-02-23
    • JP22313597
    • 1997-08-05
    • SENI DOBOKU KAIHATSU KKTOYO BOSEKIDAIKA SANGYO KKTOMEN KK
    • SASAKI SHIRONISHIDA TAKASHIKASAI SHIRONUMATA TADASHI
    • E02B3/08
    • PROBLEM TO BE SOLVED: To increase the strength of the nearby position of the bottom of a net and regulate the stacked height, by turning back two edge sides oppositely arranged at the bottom of a bag that a net formed with synthetic resin threads is sewed cylindrically, so that the edges are superposed with each other at the center of the bottom, and integrally sewing them to form a multiple bottom. SOLUTION: A double-structural net of net cloth made of twisted threads of long nylon fiber is cylindrically sewed together to form a bag body 1 with the bottom. And two edge sides 3, 4 oppositely positioned at the bottom are turned back so as to superpose the end edges 6, 7 at the bottom center and integrally sew them and constitute a multiple bottom 8. The bottom 2 is placed falt to turn back and form the turning-back part of the two edge sides 3, 4 and three net cloths are superposed in the zones 3, 4 and double net cloths are superposed in the zones 11, 12, in the multiple bottom 8. Crushed stones or the like are contained in the bag body 1. Since the multiple bottom 8 occupies the half of the lower external periphery and the bottom external periphery on which the largest load acts when it is hung, the danger of breakage is reduced by half. And hence, the strength of the nearby position of the bottom of the net is increased and the stacked height of crushed stones can be regulated.