Patents by Inventor Douglas S. Bensley
Douglas S. Bensley has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8864475Abstract: In general, a piston-type pump includes a wash flow path that allows a wash liquid such as water to pass through to provide washing and cleaning as the pump operates. The pump may be used in precision liquid dispensing systems and particularly with liquid solutions that have a tendency to precipitate solid particulate. By washing a portion of the pump piston, the liquid solution being dispensed and any solid particulates may be carried away and removed from the pump.Type: GrantFiled: May 28, 2010Date of Patent: October 21, 2014Assignee: Ivek CorporationInventor: Douglas S. Bensley
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Patent number: 8398934Abstract: A magnetic coupling system may be used in a fluid displacement apparatus to magnetically couple a drive shaft to a piston. The magnetic coupling system may include first and second magnetic couplers at the ends of the drive shaft and piston, respectively. The first magnetic coupler and second magnetic coupler may be configured to exert an attractive force. A bearing between the magnetic couplers reduces friction and side loading.Type: GrantFiled: August 6, 2012Date of Patent: March 19, 2013Assignee: Ivek CorporationInventor: Douglas S. Bensley
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Patent number: 8337782Abstract: A magnetic coupling system may be used in a fluid displacement apparatus to magnetically couple a drive shaft to a piston. The magnetic coupling system may include first and second magnetic couplers at the ends of the drive shaft and piston, respectively. The first magnetic coupler and second magnetic coupler may be configured to exert an attractive force. A bearing between the magnetic couplers reduces friction and side loading.Type: GrantFiled: October 16, 2008Date of Patent: December 25, 2012Assignee: Ivek CorporationInventor: Douglas S. Bensley
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Publication number: 20120294735Abstract: A magnetic coupling system may be used in a fluid displacement apparatus to magnetically couple a drive shaft to a piston. The magnetic coupling system may include first and second magnetic couplers at the ends of the drive shaft and piston, respectively. The first magnetic coupler and second magnetic coupler may be configured to exert an attractive force. A bearing between the magnetic couplers reduces friction and side loading.Type: ApplicationFiled: August 6, 2012Publication date: November 22, 2012Applicant: IVEK CORPORATIONInventor: Douglas S. Bensley
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Publication number: 20100301069Abstract: In general, a piston-type pump includes a wash flow path that allows a wash liquid such as water to pass through to provide washing and cleaning as the pump operates. The pump may be used in precision liquid dispensing systems and particularly with liquid solutions that have a tendency to precipitate solid particulate. By washing a portion of the pump piston, the liquid solution being dispensed and any solid particulates may be carried away and removed from the pump.Type: ApplicationFiled: May 28, 2010Publication date: December 2, 2010Applicant: IVEK CORPORATIONInventor: Douglas S. Bensley
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Patent number: 7690293Abstract: A magnetic coupling system may be used in a fluid displacement apparatus to magnetically couple a drive shaft to a piston. The magnetic coupling system may include first and second magnetic couplers at the ends of the drive shaft and piston, respectively. The second magnetic coupler is configured to magnetically engage the first magnetic coupler and configured to mechanically engage the first magnetic coupler if the couplers disengage magnetically.Type: GrantFiled: January 5, 2007Date of Patent: April 6, 2010Assignee: Ivek CorporationInventors: Douglas S. Bensley, Robert C. Demers, James V. Bruno
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Publication number: 20090120967Abstract: A magnetic coupling system may be used in a fluid displacement apparatus to magnetically couple a drive shaft to a piston. The magnetic coupling system may include first and second magnetic couplers at the ends of the drive shaft and piston, respectively. The first magnetic coupler and second magnetic coupler may be configured to exert an attractive force. A bearing between the magnetic couplers reduces friction and side loading.Type: ApplicationFiled: October 16, 2008Publication date: May 14, 2009Applicant: IVEK CORPORATIONInventor: Douglas S. Bensley
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Publication number: 20080166248Abstract: A magnetic coupling system may be used in a fluid displacement apparatus to magnetically couple a drive shaft to a piston. The magnetic coupling system may include first and second magnetic couplers at the ends of the drive shaft and piston, respectively. The second magnetic coupler is configured to magnetically engage the first magnetic coupler and configured to mechanically engage the first magnetic coupler if the couplers disengage magnetically.Type: ApplicationFiled: January 5, 2007Publication date: July 10, 2008Applicant: IVEK CORPORATIONInventors: Douglas S. Bensley, Robert C. Demers, James V. Bruno
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Patent number: 6322337Abstract: The present invention provides systems and methods of dispensing liquids. In one embodiment, the system includes a pump with a removable pump module with at least one displacement piston and at least one piston valve. A motor and base assembly provide the supporting components of the pump which can be used in environments where precise small volumes of ultra-pure liquids must be transferred from a reservoir to a point of use. The preferred embodiment of the system prevents contaminants and air bubbles from being introduced into the liquid to be dispensed by placing a filter across the discharge line downstream from the pump, and providing a separate drawback line for performing the drawback of the liquid in the dispensing nozzle.Type: GrantFiled: July 24, 1999Date of Patent: November 27, 2001Assignees: Ivek Corporation, Silicon Valley Group, Inc.Inventors: Douglas S. Bensley, John E. Barney, Frank Dimaggio, Mark Tanny, Dikran Babikian
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Patent number: 6302662Abstract: The present invention provides systems and methods of dispensing liquids. In one embodiment, the system includes a pump with a removable pump module with at least one displacement piston and at least one piston valve. A motor and base assembly provides the supporting components of the pump, which can be used in environments where precise small volumes of ultra-pure liquids must be transferred from a reservoir to a point of use. The preferred embodiment of the system prevents contaminants and air bubbles from being introduced into the liquid to be dispensed by placing a filter across the discharge line downstream from the pump, and providing a separate drawback line for performing the drawback of the liquid in the dispensing nozzle.Type: GrantFiled: March 9, 2000Date of Patent: October 16, 2001Assignees: Ivek Corporation, Silicon Valley Group, Inc.Inventors: Douglas S. Bensley, John E. Barney, Frank Dimaggio, Mark Tanny
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Patent number: 5996620Abstract: A liquid dispenser and control system includes a base member having an intake cavity with an axis for orientation in an upward direction, the intake cavity being sealingly mateable with a mouth opening of a replaceable liquid container which, when mated with the intake cavity, is in an inverted position for draining liquid through the mouth opening into the intake cavity. The intake cavity includes a sump into which liquid from the container can drain by gravity. The vent tube assembly has an intake end connectable to atmosphere or a source of gas, the vent tube assembly extending from the base member through the intake cavity, and has a venting end for positioning inside the container. A passageway extends through a portion of the base member, the passageway having an entry end and an exit end, the entry end connected to the sump, through which liquid from the sump can drain into the passageway.Type: GrantFiled: April 7, 1998Date of Patent: December 7, 1999Assignee: Mallinckrodt Inc.Inventor: Douglas S. Bensley
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Patent number: 5863187Abstract: A rotary reciprocating pumping apparatus is provided with a positive two position adjustment feature which allows the piston stroke to be increased to a maximum and repeatably, automatically, returned to a second calibrated dispensing position. Such rotary reciprocating pump is further provided with an adjustable liquid displacement velocity profile to maintain sufficient velocity of liquid flow at the end of the pump discharge cycle to enable injection of small volumes of liquid through a pump exhaust port, thereby eliminating the inaccurate and time consuming operation of touching off a small volume of liquid as a drop characterizing known rotary reciprocating pumping systems.Type: GrantFiled: February 10, 1997Date of Patent: January 26, 1999Assignee: Ivek CorporationInventors: Douglas S. Bensley, Mark Tanny
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Patent number: 5312233Abstract: A rotary/reciprocating liquid dispensing pump for dispensing liquids in the nanoliter range has a narrow radial slot extending longitudinally from an end of a reciprocating, rotating cylindrical piston sliding in a smooth cylindrical bore of a pump housing at a closed end thereof, which slot extends outwardly to the periphery of the piston. The piston is selectively positioned in alignment with one of a plurality of circumferentially spaced small diameter radial passages within the housing opening directly to the cylindrical bore in the path of rotation of said slot. The ports thereof opening to the cylindrical bore are spaced circumferentially a distance in excess of the width of the slot. A linear liquid dispensing pump apparatus including such pump includes a stepping motor and an electromagnetic clutch/braking mechanism concentrically surrounding a lead screw, and the lead screw is threadably engaged with a stepping motor tubular rotor shaft.Type: GrantFiled: February 25, 1993Date of Patent: May 17, 1994Assignee: Ivek CorporationInventors: Mark N. Tanny, Raymond A. LeBlanc, Douglas S. Bensley, Vernon W. Zeitz, John E. Barney