Patents by Inventor Robert J. Bland

Robert J. Bland 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: 7237389
    Abstract: Aspects of the invention relate to a system for attaching a ceramic liner to a non-ceramic combustor head-end component while accommodating different rates of thermal expansion of these components. One end of the liner can be received within a slot formed by the combustor head-end component. The liner can be held in place by a plurality of pins with each pin passing through a pair of aligned openings in the liner and the head-end component. The end of the liner can be spaced from each of the walls of the slot so as to form a series of gaps in fluid communication. The gaps and the pins can accommodate differential thermal expansion between the liner and combustor head-end component. If desired, at least some of the gaps can be tightly controlled so as to regulate air leakage around the end of the liner.
    Type: Grant
    Filed: November 18, 2004
    Date of Patent: July 3, 2007
    Assignee: Siemens Power Generation, Inc.
    Inventors: William R. Ryan, Robert J. Bland
  • Patent number: 4620108
    Abstract: A circuit for combining independently controlled AC and DC voltages in which AC and DC voltages are respectively applied to different inputs of a first amplifier, its output is connected to a first output terminal, the DC voltage is applied to the input of a second amplifier, its output is connected to a second output terminal that is grounded for AC, a voltage divider is connected between said output terminals and the gains of the amplifiers for DC are the same.
    Type: Grant
    Filed: June 4, 1985
    Date of Patent: October 28, 1986
    Assignee: Hewlett-Packard Company
    Inventor: Robert J. Bland
  • Patent number: 4055791
    Abstract: A switching type power supply is provided which includes a first and a second SCR with a diode connected in reverse across each of them. The first SCR-diode pair in response to a clock pulse charges a capacitor which when fully charged causes the first SCR current to return to zero, forward biases the first diode and commutates the first SCR off for at least the required minimum turn-off time of the SCR. After the capacitor reaches the peak charge value, the second SCR is selectively triggered to couple the desired portion of the stored energy to the power supply load via a transformer. After the currents in the secondary windings of the transformer reverse, and the capacitor achieves a peak charge of the opposite polarity, the current through the second SCR becomes zero, the second diode is forward biased, and the second SCR is commutated off.
    Type: Grant
    Filed: September 8, 1975
    Date of Patent: October 25, 1977
    Assignee: Hewlett-Packard Company
    Inventors: Robert J. Bland, Winfried Seipel