Title:
【発明の名称】運動場の或る範囲のためのカバー
Document Type and Number:
Japanese Patent JP3071821
Kind Code:
B2
Abstract:
PCT No. PCT/GB91/00303 Sec. 371 Date Sep. 2, 1992 Sec. 102(e) Date Sep. 2, 1992 PCT Filed Feb. 27, 1991 PCT Pub. No. WO91/13208 PCT Pub. Date Sep. 5, 1991.A cover unit 12 adapted to interlock with other such units having a top surface 14 capable of supporting persons. The unit 12 is formed of semi-opaque plastics material thereby providing for a required reduced amount of light to reach any plants located beneath the unit 12. A grid is provided by a plurality of recesses 18, 20 on the surface 14, the recesses 18, 20 accepting liquids thereby permitting evaporation and run-off of the liquids from the unit 12. A framework of ribs 22 is provided on the underside of each unit 12. Locating means may be provided on the ribs 22 in the form of spikes 24 or alternatively feet 224. The locating means are shaped to engage the ground beneath the unit 12 substantially without causing damage thereto. A plurality of ports 28 extend through the unit 12 enabling plants beneath the unit 12 to breathe. The ports 28 and recesses 18, 20 are of a size to be bridged by footwear.
Inventors:
Macleod, Ian Mackenzie
Application Number:
JP50498491A
Publication Date:
July 31, 2000
Filing Date:
February 27, 1991
Export Citation:
Assignee:
Terra Plus Limited
International Classes:
A63C19/12; E01C9/00; E01C9/08; (IPC1-7): A63C19/12; E01C9/08
Domestic Patent References:
| JP212242U |
Other References:
【文献】米国特許4917532(US,A)
【文献】米国特許4596731(US,A)
【文献】欧州特許出願公開224095(EP,A1)
【文献】米国特許4596731(US,A)
【文献】欧州特許出願公開224095(EP,A1)
Attorney, Agent or Firm:
Motohiro Kurauchi (1 outside)