Fixing structure and method for fixing upper cup muffler

Details Fixing structure and method for fixing upper cup muffler Fixing structure and method for fixing upper cup muffler

2006-03-24

2010-12-14

Kramer, Devon C (Department: 3746)

Pumps

With muffler acting on pump fluid

C417S902000

Reexamination Certificate

active

07850436

ABSTRACT:
A structure and method for fixing an upper cup muffler to an upper bearing portion. The upper bearing portion includes a step portion having an upper, lower and side surfaces. A peripheral edge portion between the upper and side surfaces of the upper bearing portion is declined outwardly to have a slant surface. The upper cup muffler includes a bottom surface and a peripheral side surface lower portion that extends downwardly from the edge portion of the bottom surface. The peripheral side surface lower portion gets across the slant surface of the upper bearing portion and is brought into linear or planar contact with at least one of the outer side surface and the lower surface of the step portion when the bottom surface of the upper cup muffler and the upper surface of the upper bearing portion are fixed to each other.

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