Throttle flap construction for an exhaust gas duct of an interna

Details Throttle flap construction for an exhaust gas duct of an interna Throttle flap construction for an exhaust gas duct of an interna

1993-08-27

1994-08-30

Fox, John C.

Valves and valve actuation

Rotary valves

Butterfly

137315, F16K 122

Patent

active

053420195

ABSTRACT:
A throttle flap construction (12) is installed in an exhaust gas duct (11). For the installation the duct wall is provided with a radially facing, axially extending narrow slot (20) centrally provided with a circular opening so that a flap disk (14) may pass radially inwardly through the slot while a bearing portion (17) of the flap disk (14) may pass through the central circular opening. During installation, the flap disk (14) extends vertically when the throttle unit is inserted, a cover (16) is bolted to a flange (11A) surrounding the slot (20) and the central opening (21). Thus, the duct (11) can be properly sealed without cutting entirely through the duct in a radial plane.

REFERENCES:
patent: 3314444 (1967-04-01), White, Jr.
patent: 3406903 (1962-10-01), Kidder
patent: 3704721 (1972-12-01), Schmitz et al.
patent: 3799434 (1974-03-01), Heidacker

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