Title:
SECONDARY AIR FEEDER
Document Type and Number:
Japanese Patent JPS58155215
Kind Code:
A
Abstract:
PURPOSE:To enable the simple manufacturing of a secondary air feeder capable of cleaning air up, by providing an annular filtering member bent in a prescribed procedure, and a check valve in an identical casing. CONSTITUTION:To manufacture a filtering member 2 for cleaning air up, a filtering material 8 shaped as a trapezoidal band is repeatedly folded along lines B-B', C-C',..., K-K', between which the same width is set. The filtering member 2 has such a wavy longitudinal section that the member has plural top edges and plural bottom edges. After the folding, the filtering material 8 is annularly curved so that its minor edge is located inside. The side edges of the material 8 are then integrally coupled to each other by plastic 9. The filtering member 2 is arranged together with a check valve 3 in a cylindrical casing 1 made of synthetic resin. A desired secondary air feeder is thus constructed. The air is filtered by the member 2 through the check valve 3 which is opened when exhaust negative pressure is caused. The filtered air is conducted to an exhaust line to purify exhaust gas.
Inventors:
FUNAE KEIZOU
FUKUDA TOSHIAKI
FUKUDA TOSHIAKI
Application Number:
JP3862982A
Publication Date:
September 14, 1983
Filing Date:
March 11, 1982
Export Citation:
Assignee:
NIPPON DENSO CO
International Classes:
B01D46/52; F01N3/34; F02M35/024; (IPC1-7): B01D25/00; F01N3/34
Attorney, Agent or Firm:
Hideto Asamura