Patent ID: 11891989
Assignee: BLUE-WHITE INDUSTRIES, LTD.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 8:
9. A diaphragm pump assembly comprising:
a first diaphragm chamber having an inlet, an outlet, and a first flexible wall; a second diaphragm chamber having an inlet, an outlet, and a second flexible wall; a housing defining a pump drive chamber positioned between the first diaphragm chamber and the second diaphragm chamber;
a drive yoke positioned within the pump drive chamber defining an interior of the drive yoke, the drive yoke defining a yoke pocket;
a motor;
a motor shaft connected to the motor and extending into the pump drive chamber within the interior of the drive yoke, the motor shaft having an axis;
an offset cam configured to rotate in response to rotation of the motor shaft and positioned within the interior of the drive yoke;
a first piston connected to the first flexible wall and to the drive yoke;
a second piston connected to the second flexible wall and to the drive yoke; and
a motor shaft support positioned on a side of the drive yoke opposite the motor, the motor shaft support having a first pair of arms which spans the drive yoke and is secured to the housing on either side of the pump drive chamber, and
wherein a portion of the motor shaft extends beyond the drive yoke opposite the motor and the motor shaft support resists translation of the portion of the motor shaft beyond the drive yoke opposite the motor in a direction perpendicular to the axis of the motor shaft.