Importance

Loading Importance Indicators...

Abstract

A central-vacuum power unit is provided having a molded rubber gasket which seals and vibrationally isolates a vacuum motor. The power unit includes a canister forming a hollow interior and a plate dividing the hollow interior into first and second chambers. The vacuum motor is located within the first chamber and has an inlet in fluid communication with the second chamber through an opening in the plate. The molded rubber gasket encircles the plate opening and seals the vacuum motor to the plate. The gasket also forms a seat for the vacuum motor and supports the vacuum motor against the plate. The gasket includes a ring-shaped main wall, a protrusion extending from the main wall and engaging an end surface of the vacuum motor, and an outer wall extending from the main wall and engaging the outer periphery of the vacuum motor. Distinct primary and secondary seals are formed by the protrusion and outer wall. The outer wall is shaped so that a seal can be obtained over a relatively short longitudinal length. The protrusion is shaped so that the end surface of the vacuum motor can be either flat or concave.

Loading the Abstract Image...

First Claim