Dispenser

• US 3,237,571 A
• Filed: 12/16/1963
• Issued: 03/01/1966
• Est. Priority Date: 12/16/1963
• Status: Expired due to Term

• Current Assignee: Douglas F. Corsette
• Original Assignee: Douglas F. Corsette
• Inventors: Corsette, Douglas F.
• Application Number:
  US04/336,092
• Time in Patent Office: 806 Days
• US Class Current: 417/513
• CPC Class Codes: B05B 11/1023 having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
• CPC Class Codes: B05B 11/1066 Pump inlet valves B05B11/1018, B05B11/1019, B05B11/1064 take precedence
• CPC Class Codes: B05B 11/107 Gate valves; Sliding valves

Claims

1. A RECIPROCATING PUMP COMPRISING A PUMP CYLINDER HAVING AN INLET PORT COMMUNICATING WITH ONE END THEREOF, AN ANNULAR PISTON DISPOSED FOR AXIAL RECIPROCATION IN SAID CYLINDER IN FLUID TIGHT FRICTIONAL SLIDING ENGAGEMENT WITH THE INNER WALL OF SAID CYLINDER, SAID PISTON AND THE CLOSED END OF SAID CYLINDER JOINTLY DEFINING A VARIABLE VOLUME PUMP CHAMBER, A TUBULAR PLUNGER ROD EXTENDING COAXIALLY THROUGH SAID PISTON RECIPROCATION IN SAID CYLINDER AND DEFINING A PUMP OUTLET PASSAGE, SAID PLUNGER ROD BEING FORMED WITH AN OUTLET PORT POSITIONED TO ESTABLISH COMMUNICATION BETWEEN SAID PUMP CHAMBER AND SAID OUTLET PASSAGE, SAID PISTON HAVING AN OUTLET VALVE AFFIXED THERETO FOR L IMITED AXIAL SLIDING MOVEMENT ON SAID PLUNGER ROD BETWEEN OPEN AND CLOSED POSITIONS WITH RESPECT TO SAID OUTLET PORT, COOPERATING MEANS POSITIONS WITH RESPECT TO SAID SAID PISTON FOR LIMITING SAID ROD AND PISTON TO RELATIVE MOVEMENT BETWEEN SAID OPEN AND CLOSED POSITION, AND INLET VALVE DISPOSED IN SAID PUMP CHAMBER FOR AXIAL MOVEMENT TO AND FROM CLOSING RELATION WITH RESPECT TO SAID INLET PORT, MEANS YIELDABLY INTERCONNECTING SAID INLET VALVE AND SAID PLUNGER ROD FOR AXIAL MOVEMENT TOGETHER, AND MEANS IN SAID CYLINDER FOR LIMITING THE AXIAL MOVEMENT OF SAID INLET VALVE AWAY FROM CLOSING RELATION WITH RESPECT TO SAID INLET PORT.