Title:
CEILING INSPECTION HOLE DEVICE
Document Type and Number:
Japanese Patent JP3145995
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent a heat-insulative internal cover from being chipped off when attaching the internal cover to a fitting frame and enhance air-tightness and improve heat insulation efficiency.
SOLUTION: In this ceiling inspection hole device, a heat-insulative internal cover 4 is arranged at the upper side of an inspection cover 14 opening or closing an opening 1 provided in a ceiling. The fitting frame 2 is attached to the opening 1 and a heat-insulative external frame 3 is attached to the fitting frame 2 and further, the heat-insulative internal cover 4 covering the upper side of the inspection cover 14 is attached to the inside of the heat-insulative external frame 3, and the external frame 3 is formed of a material softer than the internal cover 4.
Inventors:
Koji Hori
Yozo Oisai
Kenji Kusano
Ryoichi Matsushima
Yozo Oisai
Kenji Kusano
Ryoichi Matsushima
Application Number:
JP18089599A
Publication Date:
March 12, 2001
Filing Date:
June 25, 1999
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS,LTD.
International Classes:
E04F19/08; (IPC1-7): E04F19/08
Attorney, Agent or Firm:
Keisei Nishikawa (1 person outside)