Gm Global Technolgoy Operations, Inc.

Joseph L Tengowski

Steven F Baker

Brent R Behrman

Albert D Johnston

Edward W Molloy

Ronald L Dorski

John Liddell Turner

Ernest G Steele

A channel type vehicle water pump drip collector provides improved efficiency and capacity and a simple installation. The internal volume enclosed by a retainer that is snap fitted onto the housing is filled with an absorbent material. Leaking coolant is soaked up, rather than puddling at the bottom of the channel. Therefore, a leak proof, welded connection is not needed. In the embodiment disclosed, a retainer for the ring is attached by flexible teeth, and the spaces between the teeth provide air vents through which absorbed coolant may gradually evaporate to the outside.

Coolant pump drip collector with improved capacity

A vehicle water pump seal has a specially designed gasket interposed between the retainer flange that the spring bears on and the sealing ring that transmits the spring force evenly in spite of bowing in the retainer flange.

Water pump seal with improved seal force distribution

A slinger ring for a vehicle water pump shaft is given a scalloped outer lip, which causes the lip to undulate back and forth past vent holes in the bearing race as the pump shaft rotates. This provides a continual vent hole cleaning and scraping action.

Vehicle water pump with improved slinger

A water pump face seal assembly uses a wave spring stamped from flat stock with drive tabs which, besides providing contact force and wear take up, also serves to maintain a square, concentric contact interface and to transfer torque with almost no lost motion, isolating a joint between an elastomer seal and a seal casing from twisting stress.

Water pump face seal assembly

A thrust type one-way roller clutch includes a means to assure that the centrifugal force of rotation does not destabilize the ready position of the rollers. The cam ramp surfaces are angularly offset from a radial line in a direction opposite to the allowed direction of relative race rotation. The energizing springs bias the rollers toward a ready position of light engagement with the cam ramp surfaces, thus maintaining the rollers with their individual axes similarly angularly offset. As a consequence, the centrifugal force of rotation will cause the rollers to move in a direction toward ready position only.

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Norwalk, OH, United States of America

Joseph L Tengowski