Patent ID: 7373910

Claim:
A housing sealing cover mounted on a housing, the housing comprising at least a first cavity and a second cavity; the cover comprising: a central hole holding a gasket for a shaft which is adapted to extend in an axial direction through the gasket in an installed state; at least first and second hollow-cylindrical protuberances which project in the axial direction relative to areas of the cover directly surrounding the at least first and second hollow-cylindrical protuberances, the first hollow-cylindrical protuberance being positioned in the first cavity of the housing and the second hollow-cylindrical protuberances being positioned in the second cavity of the housing; the first protuberance possessing an outer peripheral surface, with the outer peripheral surface of the first protuberance being accurately fit without play into the first cavity of the housing; and the second protuberance being configured relative to the second cavity of the housing such that the second protuberance is freely positioned within the second cavity in a direction along a line connecting center points of the first and second protuberances, with the second protuberance adjoining at least one point of an inner peripheral surface of the second cavity in a diametrical direction of the second cavity which is perpendicular to the line.