Patents by Inventor John Shipman

John Shipman 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: 10086620
    Abstract: In one example, a flexible circuit for a fluid cartridge includes a single flexible substrate, an integrated circuit connected to the single flexible substrate, and an electrical connector pad array arranged in a constant pattern on the single flexible substrate for connection to a host controller. The electrical connector pad array includes first electrical connector pads connected to the integrated circuit and second electrical connector pads for connection to a fluid dispensing die.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: October 2, 2018
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Iain Campbell-Brown, Mark Walsh, John Oliver, Jefferson P. Ward, Amy Shipman
  • Publication number: 20170370799
    Abstract: Methods and apparatuses are provided for evaluating or testing stiction in Microelectromechanical Systems (MEMS) devices utilizing a mechanized shock pulse generation approach. In one embodiment, the method includes the step or process of loading a MEMS device, such as a multi-axis MEMS accelerometer, into a socket provided on a Device-Under-Test (DUT) board. After loading the MEMS device into the socket, a series of controlled shock pulses is generated and transmitted through the MEMS device utilizing a mechanized test apparatus. The mechanized test apparatus may, for example, repeatedly move the DUT board over a predefined motion path to generate the controlled shock pulses. In certain cases, transverse vibrations may also be directed through the tested MEMS device in conjunction with the shock pulses. An output of the MEMS device is then monitored to determine whether stiction of the MEMS device occurs during each of the series of controlled shock pulses.
    Type: Application
    Filed: June 22, 2016
    Publication date: December 28, 2017
  • Publication number: 20060156804
    Abstract: A system for precisely measuring muzzle exit velocity of a “muzzle loaded” mortar projectile fired from a mortar tube using two back-biased Hall effect sensors for projectile gas ring channel detection. The system includes a back-biased Hall effect sensor block, a digital resolver electronic circuit and a computer software interface. The back-biased Hall effect sensors are located in a calibrated sensor block attached to a mortar tube. As the projectile metal casing passes a face of the sensors, the sensors trigger and release, providing two electronic pulses. The pulse edges are captured in the resolver electronics, containing a discriminator circuit for filtering all input pulses to distinguish between a projectile loading event and a projectile firing event. Once a valid firing event is detected, an output of precision timers is presented serially to a computer where it is processed and displayed by a computer software interface.
    Type: Application
    Filed: January 14, 2005
    Publication date: July 20, 2006
    Inventors: John Shipman, Eric Judkins, J. Martin, Daniel Burkholder
  • Publication number: 20060144216
    Abstract: An isolation system for a sensitive component or apparatus affixed to a mortar tube comprising a barrel mount assembly which supports two parallel shafts. A plate parallel with each axis of the two shafts positions four bearing carrier blocks, two each containing a sleeve bearing which rides on each of the shafts to allow the plate assembly to slide freely along the length of the shafts and support an isolated cage. During firing, the travel vector is decoupled from the cage by the shafts as they move with the barrel through the bearings leaving the cage assembly in free space. The cage then accelerates under the force of gravity over the distance of the displaced travel of the shafts back to its rest position landing on steel springs or dampers, each on a shaft and seated against the lower flange end of the barrel mount assembly.
    Type: Application
    Filed: November 30, 2005
    Publication date: July 6, 2006
    Inventors: John Shipman, Eric Judkins, Glen Mantych, Daniel Burkholder