Patents by Inventor Michael J. Dougherty

Michael J. Dougherty 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: 5630026
    Abstract: A method and apparatus for conserving a substance dispensed by a printer engine for forming print on a media. As an example, the method stores a plurality of bits in a memory, the plurality of bits representing a cumulative pattern to be printed by reproducing the bits on the media. Each bit is either in a first memory state or a second memory state. The method further selects a subset of the plurality of bits, wherein the subset forms a first pattern and has a center bit. If each of the plurality of bits of the subset is in the first memory state, the method outputs to the printer engine a print bit corresponding to the center bit and in a print state which is opposite the memory state of the center bit. If, however, at least one of the plurality of bits of the subset is in the second memory state, the method outputs to the printer engine a print bit corresponding to the center bit and in a print state the same as the memory state of the center bit.
    Type: Grant
    Filed: November 23, 1994
    Date of Patent: May 13, 1997
    Assignee: Compaq Computer Corporation
    Inventors: Thomas M. Ogletree, Michael J. Dougherty, Stephen M. Zaudtke
  • Patent number: 5596684
    Abstract: A method processes a plurality of bits stored in a first memory and representing an image to be printed by reproducing the bits in a fast scan direction. The method includes the step of reading a plurality of groups from the first memory into a second memory, wherein each of the groups comprises a number of bits greater than one bit and is stored in the second memory in the fast scan direction, and wherein each group is read one group at a time. Further, the method includes copying a predetermined number of bits from each of the plurality of groups to a sample storage area. After the copying step, the method samples the bits of the copied groups wherein the sampled bits form a pattern having a center bit having a binary state. Finally, after the sampling step, the method outputs a print signal representative of the binary state if the pattern does not match a predetermined pattern, or outputs a print signal different than the binary state if the pattern matches a predetermined pattern.
    Type: Grant
    Filed: November 23, 1994
    Date of Patent: January 21, 1997
    Assignee: Compaq Computer Corporation
    Inventors: Thomas M. Ogletree, Michael J. Dougherty
  • Patent number: 5329214
    Abstract: To improve the reliability and lower the cost of electronic control circuits for direct current (DC) motors, the need for external mechanical sensors is eliminated through the use of low cost, highly reliable voltage comparator circuits. A motor driver integrated circuit provides for electronic storage of data, automatic execution of computer programs, and input/output transfer of various electronic signals used in the control of the DC motor. The voltage comparator circuits sense the operating state of the DC motor by comparing the motor current sense voltage, which is proportional to the torque of the motor, to threshold fixed reference voltages to determine whether the DC motor is running normally or is stalled. The motor driver IC stops or reverses the DC motor when it is stalled, thereby preventing damage and providing for fully automatic operation without external sensors.
    Type: Grant
    Filed: August 28, 1992
    Date of Patent: July 12, 1994
    Assignee: Compaq Computer Corporation
    Inventors: Ralph K. Williamson, Michael J. Dougherty, Phillip M. O'Hara
  • Patent number: 4836806
    Abstract: An improved pin connector system comprising a compliant pin that effects a resilient interference fit within a complementary circular aperture of a printed circuit board. The pin utilizes an improved three beam configuration that optimizes electrical continuity, load distribution and mechanical stability, yet minimizes insertion force. The compliant pin exhibits improved contact wiping upon insertion and superior anti-torque and retention force characteristics after insertion.
    Type: Grant
    Filed: May 19, 1988
    Date of Patent: June 6, 1989
    Assignee: Microdot Inc.
    Inventors: Michael J. Dougherty, Alan S. Olshansky
  • Patent number: 4789343
    Abstract: An improved electrical connector system for connecting an electronic control system to electrically adjustable automotive suspension components, such as shock absorbers and MacPherson struts, features ease of connectibility and serviceability, superior electrical insulation, fewer individual components, and increased reliability. More specifically, the connector assembly features recessed, axially elongated contacts; integral latching strain relief caps; positive keying surfaces to ensure proper connector orientation; latching arms for removably attaching the connector system to the suspension component; and at least one seal radially disposed between the connector system and suspension component housing to prevent moisture penetration thereinto.
    Type: Grant
    Filed: October 6, 1987
    Date of Patent: December 6, 1988
    Assignee: Microdot Inc.
    Inventors: Michael J. Dougherty, Robert E. MacMullin
  • Patent number: 4756078
    Abstract: A tool to extract an integrated circuit package from a socket with minimal damage to package or socket.
    Type: Grant
    Filed: May 4, 1987
    Date of Patent: July 12, 1988
    Assignee: Microdot Inc.
    Inventors: Michael J. Dougherty, Robert E. MacMullin
  • Patent number: T997001
    Abstract: A gasoline dispensing system having vapor removal means associated therewith incorporating a pressure-actuated switch for detecting increased gas pressure in said vapor removal means when a liquid blockage occurs therein. When the gas pressure exceeds a predetermined amount, said pressure switch energizes an electrical circuit comprising an alarm.
    Type: Grant
    Filed: January 18, 1979
    Date of Patent: August 5, 1980
    Inventor: Michael J. Dougherty