Title:
VENTILATION APPARATUS
Document Type and Number:
Japanese Patent JPS58181931
Kind Code:
A
Abstract:
A venting device for sanitary conduits comprising a first edge 12 and a second edge 10 bounding an air passage 7. One side of a valve 8 of flexible material is retained on the upper side of first edge 12, the other side provided with a downwardly extending ledge 13 moveably engages the top 15 of second edge 10. The valve 8 is provided with a thinned portion 9 near the first edge 12.
Inventors:
GIISUBUREHITO HENDORIKU YOHANB
Application Number:
JP3172483A
Publication Date:
October 24, 1983
Filing Date:
February 25, 1983
Export Citation:
Assignee:
DEIPATSUTO NV
International Classes:
E03C1/28; E03C1/122; E03C1/295; (IPC1-7): E03C1/12
Attorney, Agent or Firm:
Yaichi Watanabe
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