Abstract: A piston coupling for a micro-liter range liquid dispensing system for connecting a piston to a piston drive shaft generally includes a U-shaped body portion having a U-shaped arm and an annular barrel-shaped bearing seated in the U-shaped body portion and retained by the U-shaped arm. The bearing includes an axial bore for receiving the piston, wherein the annular barrel-shaped bearing is designed for balancing the forces applied to the piston by the piston drive shaft symmetrically about the centerline of the piston.
Type:
Grant
Filed:
October 10, 2006
Date of Patent:
April 15, 2008
Assignee:
Oyster Bay Pump Works, Inc.
Inventors:
Patrick Gaillard, Peter Kurzyna, Drasko Vukicevic
Abstract: A system and method for transferring micro-amounts of liquids at accurately controlled rates and volume through the use of independent precision rotary and linear motion mechanisms. The system generally includes a pump module, an indexing module for incrementally translating at least one nozzle mounted thereto and a programmable controller for controlling the pump module and the indexing module. The pump module generally includes a chambered block, a piston drive assembly having a piston, a first motor mechanically coupled to the piston drive assembly for rotating the piston and a second motor mechanically coupled to the piston drive assembly for axially translating the piston. The chambered block has a liquid chamber, an inlet port in fluid communication with the liquid chamber and a discharge port in fluid communication with the liquid chamber. The inlet port of the chambered block is radially spaced from the discharge port.
Type:
Grant
Filed:
April 25, 2002
Date of Patent:
October 24, 2006
Assignee:
Oyster Bay Pump Works, Inc.
Inventors:
Patrick Gaillard, Peter Kurzyna, Drasko Vukicevic
Abstract: A system and method for transferring micro-amounts of liquids at accurately controlled rates and volume through the use of independent precision rotary and linear motion mechanisms. The system generally includes a pump module, an indexing module for incrementally translating at least one nozzle mounted thereto and a programmable controller for controlling the pump module and the indexing module. The pump module generally includes a chambered block, a piston drive assembly having a piston, a first motor mechanically coupled to the piston drive assembly for rotating the piston and a second motor mechanically coupled to the piston drive assembly for axially translating the piston. The chambered block has a liquid chamber, an inlet port in fluid communication with the liquid chamber and a discharge port in fluid communication with the liquid chamber. The inlet port of the chambered block is radially spaced from the discharge port.
Type:
Application
Filed:
April 25, 2002
Publication date:
October 31, 2002
Applicant:
Oyster Bay Pump Works, Inc.
Inventors:
Patrick Gaillard, Peter Kurzyna, Drasko Vukicevic