Douglas E Flemming

6550573, Apr 22, 2003

Aug 31, 2001

09/945383

Wayne M. Wagner - Apple Valley MN
Marty A. Barris - Lakeville MN
Douglas E. Flemming - Rosemount MN
James C. Rothman - Burnsville MN
Peter A. Betts - Prior Lake MN

Donaldson Company, Inc. - Minneapolis MN

F01N 100

181255, 181272, 60299

An apparatus for modifying an exhaust stream of a diesel engine is provided. The apparatus includes a muffler arrangement having an exhaust inlet and an exhaust outlet in construct and arrange for sound attenuation therein. The apparatus also includes a catalytic converter arrangement positioned within the muffler arrangement between the exhaust inlet and exhaust outlet. During operation, the exhaust flow is directed both through the muffler arrangement and the catalytic converter arrangement, to advantage.

6892854, May 17, 2005

Apr 11, 2003

10/412742

Wayne M. Wagner - Apple Valley MN, US
Marty A. Barris - Lakeville MN, US
Douglas E. Flemming - Rosemount MN, US
James C. Rothman - Burnsville MN, US
Peter A. Betts - Prior Lake MN, US

Donaldson Company, Inc. - Minneapolis MN

F01N003/10
F01N001/08

181258, 181255, 181272, 181249, 60302

An apparatus for modifying an exhaust stream of a diesel engine is provided. The apparatus includes a muffler arrangement having an exhaust inlet and an exhaust outlet in construct and arrange for sound attenuation therein. The apparatus also includes a catalytic converter arrangement positioned within the muffler arrangement between the exhaust inlet and exhaust outlet. During operation, the exhaust flow is directed both through the muffler arrangement and the catalytic converter arrangement, to advantage.

20050223703, Oct 13, 2005

Jan 3, 2005

11/029176

Wayne Wagner - Apple Valley MN, US
Marty Barris - Lakeville MN, US
Douglas Flemming - Rosemount MN, US
James Rothman - Burnsville MN, US
Peter Betts - Prior Lake MN, US

Donaldson Company, Inc. - Minneapolis MN

F01N007/00
F01N003/10
F02B027/02

060324000, 060299000, 060312000

An apparatus for modifying an exhaust stream of a diesel engine is provided. The apparatus includes a muffler arrangement having an exhaust inlet and an exhaust outlet in construct and arrange for sound attenuation therein. The apparatus also includes a catalytic converter arrangement positioned within the muffler arrangement between the exhaust inlet and exhaust outlet. During operation, the exhaust flow is directed both through the muffler arrangement and the catalytic converter arrangement, to advantage.

58280138, Oct 27, 1998

Nov 4, 1996

8/743516

Wayne M. Wagner - Apple Valley MN
Marty A. Barris - Lakeville MN
Douglas E. Flemming - Rosemount MN
James C. Rothman - Burnsville MN
Peter A. Betts - Prior Lake MN

Donaldson Company, Inc. - Minneapolis MN

F01N 100

181255

An apparatus for modifying an exhaust stream of a diesel engine is provided. The apparatus includes a muffler arrangement having an exhaust inlet and an exhaust outlet in construct and arrange for sound attenuation therein. The apparatus also includes a catalytic converter arrangement positioned within the muffler arrangement between the exhaust inlet and exhaust outlet. During operation, the exhaust flow is directed both through the muffler arrangement and the catalytic converter arrangement, to advantage.

47905743, Dec 13, 1988

Jan 16, 1987

7/003947

Wayne M. Wagner - Apple Valley MN
Douglas E. Flemming - Rosemount MN
Gary J. Rocklitz - Burnsville MN
Timothy Bethke - Apple Valley MN

Donaldson Company, Inc. - Minneapolis MN

F16L 2106

285419

A clamp suitable for joining a pair of tubular members, e. g. , commercial truck exhaust pipes. One clamp (70) according to the invention includes an S-shaped band (72) having a pair of forward curved portions (76) on either side of a reverse curved portion (78). Attached to each forward curved portion (76) is a reinforcing bar (74) preferably forming a pair of D-shaped holes (75) suitable for receiving "half-carriage" bolts (100). The band (72) is preferably formed from Type 409 stainless steel to reduce costs. A fully preformed (cylindrical) embodiment (120) and flat embodiment (130) are also disclosed.

54262690, Jun 20, 1995

Mar 2, 1993

8/025058

Wayne M. Wagner - Apple Valley MN
Marty A. Barris - Lakeville MN
Douglas E. Flemming - Rosemount MN
James C. Rothman - Burnsville MN
Peter A. Betts - Prior Lake MN
John S. Wiese - Lakeville MN
David E. Winnes - Bloomington MN

Donaldson Company, Inc. - Minneapolis MN

F01N 702

181232

An apparatus for modifying an exhaust stream of a diesel engine is provided. The apparatus includes a muffler arrangement having an exhaust inlet and an exhaust outlet in construct and arrange for sound attenuation therein. The apparatus also includes a catalytic converter arrangement positioned within the muffler arrangement. During operation, the exhaust flow is directed both through the muffler arrangement and the catalytic converter arrangement, to advantage.

48995401, Feb 13, 1990

Oct 15, 1987

7/109155

Wayne M. Wagner - Apple Valley MN
Douglas E. Flemming - Rosemount MN

Donaldson Company, Inc. - Minneapolis MN

F01N 302

60274

Muffler-filter apparatus for reducing both sound and particulates from exhaust gases from an engine. The apparatus includes resonating chambers, flow distribution means and a cellular ceramic core filter module. Filter regeneration mechanism includes a heating element for heating the carbon on the inlet end of the ceramic core to combustion temperature. Particulate ignition resulting in regeneration occurs when combustion air is provided. In alternate embodiments, combustion air first flows through a preheater system. A processor unit with particular logic controls the apparatus. The particular method of regeneration depends on the application in which the muffler-filter is used.

48326615, May 23, 1989

Oct 31, 1988

7/266298

Wayne M. Wagner - Apple Valley MN
Douglas E. Flemming - Rosemount MN

Donaldson Company, Inc. - Minneapolis MN

F16H 900

474 69

A mechanism which maintains a required power level for an electrical use device even though the power level would otherwise drop below that which is necessary at engine idle or alternator speed would increase beyond an acceptable maximum at engine hi idle. The apparatus includes a variator pulley along with mechanism for moving the pulley between first and second positions thereby increasing or decreasing the ratio of alternator speed to engine speed.