1
E Dale Hartley: Triple discharge pump. Product Research and Development, Gordon L Peterson, September 9, 1986: US04610605 (95 worldwide citation)

A pump comprising a housing and a flexible diaphragm mounted in the housing. A first region of the diaphragm partially defines a first pumping chamber, and the pumping chamber has an inlet and an outlet. A wobble plate drive is coupled to the first region of the diaphragm to provide a pumping action ...


2
E Dale Hartley: Diaphragm pump with ball bearing drive. Product Research and Development, Gordon L Peterson, August 2, 1983: US04396357 (31 worldwide citation)

A diaphragm pump comprising a supporting structure, a rotatable input member and first and second bearings mounted on the input member so that the rotation of the input member causes the second bearing to nutate. Each of the bearings have outer races, and the outer race of the first bearing is coupl ...


3
E Dale Hartley, F Scott Hartley: Ratio pump and method. Product Research and Development, Gordon L Peterson, August 4, 1987: US04684332 (21 worldwide citation)

A ratio pump for delivering first and second liquid beverage components in a desired ratio comprising a motor and a pump driven by the motor. The first beverage component is pressurized and is used as the driving fluid for the motor. The second beverage component is pumped by the pump. The first bev ...


4
E Dale Hartley, F Scott Hartley: Reciprocable device with switching mechanism. Shurflo Pump Manufacturing Co, April 9, 1996: US05505593 (20 worldwide citation)

A reciprocable device comprising a reciprocable member mounted for reciprocating movement within a chamber and a valve system for controlling the supply of fluid under pressure to the reciprocable member to bring about reciprocation of the member. The valve system comprises a spool valve, a coupling ...


5
E Dale Hartley, F Scott Hartley: Venting apparatus. Shurflo Pump Manufacturing Co, Gordon L Peterson, January 10, 1995: US05379795 (18 worldwide citation)

A venting apparatus comprising a housing having a chamber, an inlet through which fluid can be supplied to the chamber, a liquid outlet through which liquid can leave the chamber and a gas vent through which gas can leave the chamber. The apparatus also includes a pivot arm and a valve element for o ...


6
E Dale Hartley: Liquid dispensing system and automatic selector therefor. Product Research And Development, Gordon L Peterson, January 15, 1985: US04493435 (17 worldwide citation)

A dispensing system comprising first and second collapsible storage containers, a pump and a pressure responsive selector coupled to both of the storage containers and to the intake side of the pump. The selector includes a valve movable between a first position in which the selector provides commun ...


7
E Dale Hartley: Double diaphragm pump. Gordon L Peterson, December 30, 1980: US04242061 (17 worldwide citation)

A pump having first and second pumping chambers and a double-acting reciprocating piston which partly defines the pumping chambers. The piston is reciprocated by a rotatable drive member which may include an eccentric. The rotatable drive member has a peripheral surface which engages first and secon ...


8
E Dale Hartley: Pump with expandable chamber. Gordon L Peterson, December 15, 1981: US04305702 (17 worldwide citation)

A pump for pumping an incompressible liquid comprising a housing having an inlet and an outlet, a pumping chamber in said housing, and a positive displacement pumping member mounted for movement in the pumping chamber. The housing has an inlet passage which leads from the inlet to the pumping chambe ...


9
E Dale Hartley, F Scott Hartley: Bilge pump. Gordon L Peterson, February 24, 1987: US04645426 (15 worldwide citation)

A pump operable in response to the level of the liquid to be pumped comprising an impeller, a motor for rotating the impeller, a discharge passage for receiving the liquid pumped by the impeller, and a sensing chamber communicating with the discharge passage between the impeller and the pump outlet ...


10
E Dale Hartley, F Scott Hartley: Reciprocable device. Product Research and Development, Gordon L Peterson, September 9, 1986: US04610192 (12 worldwide citation)

A reciprocable device comprising a reciprocable member mounted for reciprocating movement within a chamber and a valve system for controlling the supply of fluid under pressure to the reciprocable member to bring about reciprocation of such member. The valve system includes first and second valve el ...