Pump

A pump, comprising:

• a pump housing;
• first and second valves housed within the pump housing, each valve comprising:
• a valve body defining an inner chamber in fluid communication with a valve inlet and a valve outlet;
• a valve head positioned within the inner chamber, the valve head moveable between a first position and a second position;
• a valve seal defining an aperture in fluid communication with the valve inlet and having a sealing surface;
• a bi-directional sealing member positioned between the valve head and the valve seal, the bi-directional sealing member movable between a first closed position where the bi-directional sealing member engages with the sealing surface of the valve seal to seal the aperture and a second open position where the bi-directional sealing member disengages from the sealing surface of the valve seal to allow flow through the aperture of the valve seal;
• and
• a cam engaged with a first surface of the valve head, whereby rotation of the cam causes movement of the valve head between the first position and the second position and whereby movement of the valve head to the first position holds the bi-directional sealing member in the first closed position;
• a piston and a piston chamber, the piston chamber in fluid communication with the outlet of the first valve and the inlet of the second valve above the piston;
• a cam shaft comprising first and second cams, with the first cam engaging a valve head of the first valve and the second cam engaging a valve head of the second valve, the first and second cams oriented to open the first valve when the second valve is closed and to close the second valve when the first valve is open;
• and
• a crankshaft coupled to the piston for moving the piston within the piston chamber, the crankshaft configured to move the piston in a first direction when the first valve is open and the second valve is closed to draw fluid through the first valve and into the piston chamber and to move the piston in a second direction when the second valve is open and the first valve is closed to force the fluid from the piston chamber through the second valve, the crankshaft comprising a crank arm coupled thereto with the crank arm coupled to a crank member at a distal end of the crankshaft, the crank member extending from the crankshaft at a position offset from a center axis of the crankshaft so that as the crankshaft rotates, the crank arm moves in a circular motion, which motion is determined by a radial distance the crank member is from a center of rotation of the crankshaft.

A pump, comprising:

• a pump housing;
• first and second valves housed within the pump housing, each valve comprising:
• a valve body defining an inner chamber in fluid communication with a valve inlet and a valve outlet:
• a valve head positioned within the inner chamber, the valve head moveable between a first position and a second position;
• a valve seal defining an aperture in fluid communication with the valve inlet and having a sealing surface;
• a bi-directional sealing member positioned between the valve head and the valve seal, the bi-directional sealing member movable between a first closed position where the bi-directional sealing member engages with the sealing surface of the valve seal to seal the aperture and a second open position where the bi-directional sealing member car disengages from the sealing surface of the valve seal to allow flow through the aperture of the valve seal;
• and
• a cam engaged with a first surface of the valve head, whereby rotation of the cam causes movement of the valve head between the first position and the second position and whereby movement of the valve head to the first position holds the bi-directional sealing member in the first closed position;
• a piston and a piston chamber, the piston chamber in fluid communication with the outlet of the first valve and the inlet of the second valve above the piston;
• a cam shaft comprising first and second cams, with the first cam engaging a valve head of the first valve and the second cam engaging a valve head of the second valve, the first and second cams oriented to open the first valve when the second valve is closed and to close the second valve when the first valve is open;
• and
• a crankshaft coupled to the piston for moving the piston within the piston chamber, the crankshaft configured to move the piston in a first direction when the first valve is open and the second valve is closed to draw fluid through the first valve and into the piston chamber and to move the piston in a second direction when the second valve is open and the first valve is closed to force the fluid from the piston chamber through the second valve, wherein the crankshaft further comprises a crank arm coupled thereto with the crank arm coupled to a crank member at a distal end of the crankshaft;
• and
• a priming pump in fluid communication with the inlet of the first valve;
• and
• a lever member pivotally attached to the pump housing, a first side of the lever coupled to a distal end of the crank arm, and further comprising a perpendicularly extending rod extending from the distal end of the crank arm, the rod engaging with a lever bar attached to and perpendicularly extending from a proximal end of the lever, the distal end of the lever being coupled to a body of a piston of the priming pump so that actuation of the priming pump is synchronized with the movement of the cam shaft.