Title:
FRAME OF MANHOLE
Document Type and Number:
Japanese Patent JPS58173228
Kind Code:
A
Abstract:
A frame, for a manhole/access cover and frame assembly, has outer peripheral portions which are generally of inverted U-shape in cross-section, and the outer surfaces of the peripheral portions, forming the outer limb of the inverted U, are formed with a plurality of apertures or cut-outs to facilitate the flow of concrete into the space within the peripheral portions to bed the frame securely into the concrete.
Inventors:
DEREKU FUAANZU
Application Number:
JP800483A
Publication Date:
October 12, 1983
Filing Date:
January 20, 1983
Export Citation:
Assignee:
SELFLEVEL COVERS AG
International Classes:
B65D90/10; E02D29/14; (IPC1-7): E02D29/14
Domestic Patent References:
| JP55178054B |
Attorney, Agent or Firm:
Kiyoshi Inomata