Butterfly valve with injection-molded shaft

Details Butterfly valve with injection-molded shaft Butterfly valve with injection-molded shaft

2005-06-07

2005-06-07

Hirsch, Paul J. (Department: 3753)

Fluid handling

Processes

Cleaning, repairing, or assembling

C029S890127, C137S315220, C251S305000

Reexamination Certificate

active

06901942

ABSTRACT:
The invention relates to a method for producing a throttle valve unit for installation into a flow conduit through which a gas flow passes. A flap shaft of the throttle valve unit is affixed to a stamped insert part inside a fastening region. The stamped insert part, which includes an insert border, is molded into a housing. At the same time as the stamped insert part is molded into the housing, the flap shaft affixed to the stamped insert part is molded-in inside the fastening region. A planar region of the stamped insert part connected to the flap shaft is cut out from this stamped insert part.

REFERENCES:
patent: 2586927 (1952-02-01), Fantz
patent: 3318567 (1967-05-01), Gifford
patent: 3537164 (1970-11-01), Williams
patent: 3750698 (1973-08-01), Walchle et al.
patent: 3804366 (1974-04-01), Rubright
patent: 4038734 (1977-08-01), Goldman
patent: 4243203 (1981-01-01), Mack
patent: 4786031 (1988-11-01), Waldrop
patent: 5177866 (1993-01-01), Bennett et al.
patent: 5275375 (1994-01-01), Semence
patent: 5503544 (1996-04-01), Platusich
patent: 5531248 (1996-07-01), Pearson et al.
patent: 5666988 (1997-09-01), Becker
patent: 6354267 (2002-03-01), Kotchi et al.
patent: 6598854 (2003-07-01), Jessberger et al.

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