Patents by Inventor Andrew F. Zaayenga

Andrew F. Zaayenga 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).

  • Patent number: 6896848
    Abstract: A microplate cover assembly which is compatible with manual workstations or robotic handling systems used for high throughput screening. The cover assembly includes a cover, a pressure plate and a layer of sealing material. The cover is shaped such that when it is engaged with a microplate, the cover exerts a compressive force on the pressure plate, which in turn disperses the force in a substantially uniform manner across the layer of sealing material. The cover and pressure plate also include laterally-extending tabs which allow it to be engaged with or disengaged from a microplate in a fully automated fashion.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: May 24, 2005
    Assignee: TekCel, Inc.
    Inventors: Julian D. Warhurst, Andrew F. Zaayenga
  • Publication number: 20040126209
    Abstract: An apparatus for transporting and an apparatus for conveying microplates between two locations are provided. The transport includes a pair of rails, a microplate transport carriage for moving along the rails, a rotary platter for loading and unloading microplates on the carriage, a controller for generating signals for controlling the position of the carriage on the rails and the rotation of the platter on the carriage, and a servo for moving the carriage or rotating the platter in response to a control signal. The transport moves microplates along the rails in accord with any of several methods for performing different tasks. The conveyor includes an extendable support frame, a pair of oppositely disposed tensioning elements arranged within the frame, a conveyor belt which wound around the elements and extends as the support frame is extended, and a motor for driving the conveyor belt.
    Type: Application
    Filed: December 15, 2003
    Publication date: July 1, 2004
    Inventors: Julian D. Warhurst, Andrew F. Zaayenga, Paul Quitzau
  • Patent number: 6663334
    Abstract: An apparatus for random access storage and retrieval of a plurality of microplates is provided. The apparatus includes a plurality of microplate racks arranged in a stack. Each of the racks is mechanically engaged with a plurality of support columns and each of the columns has a plurality of locking devices corresponding to the plurality of racks. The apparatus also includes a lift, coupled to the support columns, for moving the stack or a portion thereof, and a controller, coupled to the lift and the locking devices. The controller is responsive to a signal to access a desired rack or microplate to cause actuation of one or more of the locking devices corresponding to the rack adjacent to the desired rack or microplate, followed by actuation of the lift, thereby moving a portion of the stack a sufficient distance to allow access to the desired rack or microplate.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: December 16, 2003
    Assignee: TekCel Inc.
    Inventors: Julian D. Warhurst, Andrew F. Zaayenga, Paul Quitzau
  • Publication number: 20030059287
    Abstract: An apparatus for random access storage and retrieval of a plurality of microplates is provided. The apparatus includes a plurality of microplate racks arranged in a stack. Each of the racks is mechanically engaged with a plurality of support columns and each of the columns has a plurality of locking devices corresponding to the plurality of racks. The apparatus also includes a lift, coupled to the support columns, for moving the stack or a portion thereof, and a controller, coupled to the lift and the locking devices. The controller is responsive to a signal to access a desired rack or microplate to cause actuation of one or more of the locking devices corresponding to the rack adjacent to the desired rack or microplate, followed by actuation of the lift, thereby moving a portion of the stack a sufficient distance to allow access to the desired rack or microplate.
    Type: Application
    Filed: July 16, 2002
    Publication date: March 27, 2003
    Inventors: Julian D. Warhurst, Andrew F. Zaayenga, Paul Quitzau
  • Publication number: 20020102149
    Abstract: An apparatus for random access storage and retrieval of a plurality of microplates is provided. The apparatus includes a plurality of microplate racks arranged in a stack. Each of the racks is mechanically engaged with a plurality of support columns and each of the columns has a plurality of locking devices corresponding to the plurality of racks. The apparatus also includes a lift, coupled to the support columns, for moving the stack or a portion thereof, and a controller coupled to the lift and the locking devices. The controller is responsive to a signal to access a desired rack or microplate to cause actuation of one or more of the locking devices corresponding to the rack adjacent to the desired rack or microplate, followed by actuation of the lift, thereby moving a portion of the stack a sufficient distance to allow access to the desired rack or microplate.
    Type: Application
    Filed: January 26, 2001
    Publication date: August 1, 2002
    Applicant: TekCel, Inc.
    Inventors: Julian D. Warhurst, Andrew F. Zaayenga, Paul Quitzau