Patent ID: 8702180
Filing Date: 2014-04-22
Classification: B60T,F04B

Abstract:
1. A motor and pump assembly for providing pressure to a brake actuating device of a motor vehicle brake system, said assembly comprising: an electric motor; a double diaphragm pump including a pump housing, two opposed working diaphragms, and crank drives each being coupled between the electric motor and a respective diaphragm for moving the respective diaphragm, said crank drives capable of being driven by the electric motor, each diaphragm of the pump being compressed between the pump housing and a working chamber cover thereby delimiting a working chamber defined between the pump housing and the working chamber cover, each working chamber including an inlet channel, an inlet valve associated with the inlet channel, an outlet channel, and an outlet valve associated with the outlet channel, wherein the outlet channels are defined in the covers of the working chamber and in the pump housing to direct air displaced from the working chambers into an inside space of the pump housing; and an air outlet unit for exhausting the air from the inside space, wherein the air outlet unit includes means for absorbing sound and the crank drive includes eccentrics and connecting rods.