Flow rate adjusting plate for a rotary nozzle type molten metal pouring unit

Description

FIG. 1 is a front view of a flow rate adjusting plate showing my new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The characteristic feature of my design is the octagonal body shape wherein two opposite sides of the octagon are of curvilinear form and merge into adjacent linear sides of the octagon to form parabolas and wherein two circular holes are provided which are essentially coaxial with the curvilinear sides, the holes being generally aligned with the axes at which the parabolas merge with the remaining straight sides which bracket the aforenoted holes, the holes being spaced from the associated parabolas by distances no less than the diameters of the holes.

Referenced Cited
U.S. Patent Documents
D371825 July 16, 1996 Yoshihara
2042462 June 1936 Hahn
2180622 November 1939 Vincent
2508793 May 1950 Miller
2948296 August 1960 Thoeburn
4354932 October 19, 1982 McNeil
4376501 March 15, 1983 Hafner
4431028 February 14, 1984 Hendrick
4577785 March 25, 1986 Wakabayashi
4728013 March 1, 1988 Winkelmann
Foreign Patent Documents
324301 April 1911 JPX
1-28345 February 1989 JPX
1-128346 August 1989 JPX
1-28343 August 1989 JPX
1-28344 August 1989 JPX
1-28342 April 1992 JPX
411298 April 1992 JPX
Patent History
Patent number: D386568
Type: Grant
Filed: Nov 20, 1995
Date of Patent: Nov 18, 1997
Assignees: NKK Corportion (Tokyo), Tokyo Yogyo Kabushiki Kaisha (Tokyo), Nippon Rotary Nozzle Co., Ltd. (Kawasaki), Kokan Kikai Kogyo Kabushiki Kaisha (Kawasaki)
Inventor: Tetsuya Yoshihara (Kanagawa-ken)
Primary Examiner: Louis S. Zarfas
Assistant Examiner: Eric Watterson
Law Firm: Ladas & Parry
Application Number: 0/46,888
Classifications
Current U.S. Class: Check (D23/237)
International Classification: 2301;