Robert A Dodson

US Patent:

42306450, Oct 28, 1980

Filed:

Jul 10, 1978

Appl. No.:

5/923214

Inventors:

Robert W. Dodson - Royal Oak MI

Assignee:

Colt Industries Operating Corp. - New York NY

International Classification:

F02M 3510

US Classification:

261 19

Abstract:

A carburetor is disclosed as being formed by die casting and in the process employing two opposed juxtaposed casting cores to form the induction passage and main venturi therein with the result that a flashing of die cast metal occurs as between the opposed juxtaposed cores generally transversely of the induction passage generally at the location of the throat of the venturi; after casting the carturetor, the carburetor is placed onto fixture means and a cutting and forming punch or tool is moved relative to the carburetor as to both cut through the said flashing and also seat against the metal of the upstream portion of the venturi in order to assure uniformity of contour thereof especially with respect to the venturi throat as cut and sized by the tool.

US Patent:

43064418, Dec 22, 1981

Filed:

Nov 9, 1979

Appl. No.:

6/093003

Inventors:

Robert W. Dodson - Royal Oak MI

Assignee:

Colt Industries Operating Corp - New York NY

International Classification:

B21K 2108

US Classification:

72327

Abstract:

A carburetor is disclosed as being formed by die casting and in the process employing two opposed juxtaposed casting cores to form the induction passage and main venturi therein with the result that a flashing of die cast metal occurs as between the opposed juxtaposed cores generally transversely of the induction passage generally at the location of the throat of the venturi; after casting the carburetor, the carburetor is placed onto fixture means and a cutting and forming punch or tool is moved relative to the carburetor as to both cut through the said flashing and also seat against the metal of the upstream portion of the venturi in order to assure uniformity of contour thereof especially with respect to the venturi throat as cut and sized by the tool.

US Patent:

43182143, Mar 9, 1982

Filed:

Nov 13, 1979

Appl. No.:

6/093047

Inventors:

Robert W. Dodson - Royal Oak MI

Assignee:

Colt Industries Operating Corp - New York NY

International Classification:

B22D 11126

US Classification:

295276

Abstract:

A carburetor is disclosed as being formed by die casting and in the process employing two opposed juxtaposed casting cores to form the induction passage and main venturi therein with the result that a flashing of die case metal occurs as between the opposed juxtaposed cores generally transversely of the induction passage generally at the location of the throat of the venturi; after casting the carburetor, the carburetor is placed onto fixture means and a cutting and forming punch or tool is moved relative to the carburetor as to both cut through the said flashing and also seat against the metal of the upstream portion of the venturi in order to assure uniformity of contour thereof especially with respect to the venturi throat as cut and sized by the tool.