Irvy T Barker

US Patent:

46405364, Feb 3, 1987

Filed:

Feb 27, 1986

Appl. No.:

6/833544

Inventors:

Frederick H. Printiss - Stoughton WI
Irvy T. Barker - Stoughton WI

Assignee:

Nelson Industries, Inc. - Stoughton WI

International Classification:

F16L 1902

US Classification:

285367

Abstract:

A clamp assembly for clamping unslotted overlapping ends of metal tubes in an exhaust system. The clamp assembly includes a metal ring having a generally circular cross section and the ends of the ring are in overlapping contacting relation. One leg of a generally U-shaped bracket is secured to each overlapping end, while the other leg of the bracket engages the outer surface of the other end of the ring to urge the overlapping ends of the ring into contacting relation. A bolt extends through the aligned openings in the brackets, and the axis of the bolt is in a plane passing through the line of contact between the overlapping ends. The head of the bolt bears against the side edge of one bracket while a nut threaded on the opposite end of the bolt bears against the side edge of the other bracket. By threading down the bolt, the ring is contracted in diameter to provide a low cost, strong, 360. degree. closure for clamping the tubes.

US Patent:

46976680, Oct 6, 1987

Filed:

Jan 13, 1986

Appl. No.:

6/818782

Inventors:

Irvy T. Barker - Stoughton WI

Assignee:

Nelson Industries Inc. - Stoughton WI

International Classification:

F01N 114

US Classification:

181262

Abstract:

An aspirating muffler having a simplified venturi construction. The muffler includes a body having an inlet pipe connected to the exhaust system of an engine and having an outlet pipe. The upstream end of the outlet pipe is rolled inwardly to provide the end with a reduced cross sectional area which defines a venturi. An aspirating tube which is connected to an air cleaner pre-cleaner for the engine communicates with the venturi and flow of exhaust gas through the venturi end of the outlet pipe creates an aspirating action to draw solid particles from the pre-cleaner and discharge the particles through the outlet pipe to the atmosphere.