Patents by Inventor Arthur J. Heiser, Jr.

Arthur J. Heiser, Jr. 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).

  • Battery capacity and usage system
    Patent number: 7015822
    Abstract: A battery capacity and usage system, applied to an electric powered boat. A battery monitor is controlled by a micro-controller which includes a non-volatile memory for storing a lookup table. The lookup table comprises a database of characteristics of various batteries, including a relationship between the capacity and the charged voltage, the driving current and remaining hours of usage. The load of the battery is measured by a hall effect device. By monitoring the current micro-controller calculates the remaining time of the battery is obtained from the lookup table and displays the results on a digital readout installed on dashboard of the electric powered boat.
    Type: Grant
    Filed: June 21, 2004
    Date of Patent: March 21, 2006
    Assignee: Duffield Marine, Inc.
    Inventors: Arthur J. Heiser, Jr., James F. Calvagna
  • High precision fluid pump with separating diaphragm and gaseous purging means on both sides of the diaphragm
    Patent number: 5947702
    Abstract: A high precision fluid pump for accurately delivering desired amounts of processing fluids, particularly for use in semiconductor processing and semiconductor processors. The fluid is dispensed by a piston driven by a stepper motor with precise electronic control. A rolling diaphragm isolates the stepper motor from the fluid, fumes or gas. To provide a clean environment for high purity applications, the pump is preferably made of PTFE and nitrogen purging is provided on both sides of the rolling diaphragm to reduce particle count and maintain the motor and controller temperature.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: September 7, 1999
    Assignee: Beco Manufacturing
    Inventors: Clifford Biederstadt, Gerald B. Costello, Arthur J. Heiser, Jr.
  • Dispenser for chemicals
    Patent number: 4770859
    Abstract: A device for dispensing a caked composition into a liquid employs a container filled to a desired level with a cake of the composition to be dispensed, and an upwardly opening vessel over which to place the container telescopically so that the cake surface is disposed over the vessel mouth. A support structure is included upon which the vessel is mounted in a position enabling placement of the container over the vessel, the support structure serving to support the vessel so that the vessel mouth is facing upwardly and the rim portion is disposed horizontally. Liquid coupling components couple a flow of liquid from a separate source through an inlet opening in the vessel, so that with the cake surface disposed over the vessel mouth, the liquid fills the vessel, washes across the cake surface to dispense the composition from the cake, and then discharges over the rim portion.
    Type: Grant
    Filed: October 21, 1986
    Date of Patent: September 13, 1988
    Assignee: Onshore Technology, Inc.
    Inventor: Arthur J. Heiser, Jr.