Title:
Delivery board
Document Type and Number:
Japanese Patent JP6148097
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a pair of gap bridge plates improved in durability of its passage surfaces during repeated use.SOLUTION: There is provided a pair of gap bridge plates 3a, 3b whose top surfaces are passage surfaces on which a user can pass. Each of the gap bridge plates 3a, 3b comprises: a top plate material 13 and a back plate material 15 which are arranged opposite to each other; and a foamed resin-made intermediate plate material 17 which is interposed between the top and back plate materials 13, 15. The top plate material 13 consists of a thin plate at least a top surface constituting the passage surface of which, is made of a metal and which possesses a higher rigidity than that of the back plate material 15. The back plate material 15 consists of a thin plate which is made of a resin which possesses a higher toughness than that of the top plate material 13.
Inventors:
Maki Kuwaori
Masamitsu Sato
Masamitsu Sato
Application Number:
JP2013152303A
Publication Date:
June 14, 2017
Filing Date:
July 23, 2013
Export Citation:
Assignee:
GAP Co., Ltd.
International Classes:
A61G3/06; E04F11/06
Domestic Patent References:
| JP3171678U |
Foreign References:
| WO2011037203A1 |
Attorney, Agent or Firm:
Yuichi Sudo
Daisuke Sudo
Daisuke Sudo