Exhaust system pressure control - Thomas, William E.

Title:

Exhaust system pressure control

United States Patent D360178

Inventors:

Thomas, William E. (413 Robinson Cir., Placentia, CA, 92670)

Application Number:

D/017294

Publication Date:

07/11/1995

Filing Date:

01/07/1994

Export Citation:

Primary Class:

D12/194

Field of Search:

D12/114, D12/194, D8/71, D9/302, 181/227, 181/228, 181/238, 181/247, 181/257, 181/266, 60/312, 60/314, 60/315, 60/317, 60/272, 60/274, 60/323

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US Patent References:

5282361	Device for facilitating exhaust action of an internal combustion engine	February, 1994	Sung	60/315
5248859	Collector/muffler/catalytic converter exhaust systems for evacuating internal combustion engine cylinders	September, 1993	Borla	181/257
5173576	Muffler for an internal combustion engine	December, 1992	Feuling	181/247
5044464	Active acoustic attenuation mixing chamber	September, 1991	Bremigar	60/312
5033581	Muffler for an internal combustion engine	July, 1991	Feuling	181/257
4912927	Engine exhaust control system and method	April, 1990	Billington	60/315
4834214	Muffler for an internal combustion engine	May, 1989	Feuling	181/249
4796426	High efficiency transition element positioned intermediate multi-cylinder exhaust system and secondary pipe assemblies	January, 1989	Feuling	60/313
4712643	Particulate trap exhaust muffler	December, 1987	Iles et al.	181/257
4390079	Muffler and exhaust extractor	June, 1983	Brill	181/228
4206600	Exhaust system for four-stroke internal combustion engines	June, 1980	Feuling	60/312
3983696	Combustion engine having at least one outlet passage	October, 1976	Pflugfelder	60/272
3946558	Exhaust system and method	March, 1976	Beekhuis, Jr.	60/274
3716992	ADAPTOR FOR EXHAUST MANIFOLD	February, 1973	Stahl	60/323
D212447	N/A	October, 1968	Kaser	D8/71
2168528	Exhaust passage of two-stroke internal combustion engines	August, 1939	Kadenacy	60/314
2147200	Internal combustion engine	February, 1939	Kadenacy	60/314

Primary Examiner:

Word, Hugo A.

Assistant Examiner:

Brown M.

Attorney, Agent or Firm:

Knobbe, Martens, Olson & Bear

Claims:

1. The ornamental design for the exhaust system pressure control, as shown anddescribed.

Description:

FIG. 1 is a perspective view of an exhaust system pressure control showing my new design;

FIG. 2 is a front view of the exhaust system pressure control of FIG. 1;

FIG. 3 is a cross-sectional view taken along 3--3 of FIG. 2;

FIG. 4 is a back view of the exhaust system pressure control of FIG. 1; and,

FIG. 5 is a side view of the exhaust system pressure control of FIG. 1.