Patents by Inventor Robert Brent

Robert Brent 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: 4873617
    Abstract: A power supply for an arc lamp. It includes a DC converter which has an input, an output, and a circuit for increasing the voltage received at the input and for supplying the increased voltage to its output. A current sensing circuit is provided for controlling the amount of current delivered to the output. An output "H" bridge is coupled to the output of the DC converter for generating a squarewave in response thereto. The power supply is capable of quickly igniting and re-igniting arc lamps, is relatively inexpensive to manufacture and it relatively light in weight. The power supply can accept either an AC or DC source over a wide voltage range and increases or decreases the input voltage compared to the output voltage.
    Type: Grant
    Filed: August 10, 1987
    Date of Patent: October 10, 1989
    Assignee: Camera Platforms International, Inc.
    Inventors: William Fredrick, Robert Brent, Peter Baldwain
  • Patent number: 4005541
    Abstract: A fishing leader tender having an elongated base and a pair of hook engaging blocks attached near one end of said base and tension spring means attached near the other end is disclosed. The fishing leader tender is particularly useful for holding ganged hooks wherein more than one hook is tied to one leader. The base is flat and preferably rigid with a clip attached to the spring means to engage the loop of the leader. The blocks have soft hook engaging means, such as cork, on an edge opposite the spring. The hook engaging blocks are preferably movable longitudinally so that they may be adjusted to hold a particular length of leader. The leader tender may be hinged in the center to fold more compactly and may be incorporated into a fishing box, either externally or internally. The base may be equipped with a pair of elongated legs and a rod holder to form a rod tender.
    Type: Grant
    Filed: August 22, 1975
    Date of Patent: February 1, 1977
    Inventor: Robert Brent Henrichsen
  • Patent number: 4004613
    Abstract: The valve described herein, includes a hollow valve body having inlet and outlet passageways extending into the body and a valve member positioned in the body for movement between open and closed positions. A plurality of orifice members are disposed between the inlet and the outlet so that fluid flowing through the valve must pass therethrough. The orifice members are arranged so that fluid flow from inlet to the outlet must follow a tortuous path through a series of orifices. The orifices are sized to restrict fluid flow and thus reduce the pressure as the fluid flows through the valve. Also, the relatively long tortuous flow path is provided so that the pressure is reduced over a considerable distance with as little noise as possible. The orifice members are arranged so that the inlet to each series of members is through an annular space that is narrower than the smallest of the orifices so that any particle passing through the annular space will pass through the valve.
    Type: Grant
    Filed: September 9, 1975
    Date of Patent: January 25, 1977
    Assignee: Dresser Industries, Inc.
    Inventors: Robert Merrill Purton, Robert Brent Maddock
  • Patent number: 3964516
    Abstract: The control valve described is a three-position valve that has been designed for use in decoking operations. The hollow body of the valve has been fitted with a sleeve that includes: a plurality of apertures adjacent the inlet of the valve that are arranged in communication with a first outlet; a second plurality of apertures that are spaced from the first apertures and arranged to be in communication with the second outlet of the valve; and, a plurality of relatively large perforations that extend through the sleeve and are located between the two sets of apertures and in communication with the first outlet. An elongated valve member is movably located within the sleeve. The valve member has a passageway extending therethrough so that when the valve member is in a first position, the fluid communicates from the inlet to the second outlet of the valve providing restricted flow permitting the pump connected therewith to continue to recirculate the fluid utilized in decoking through the second set of apertures.
    Type: Grant
    Filed: September 9, 1975
    Date of Patent: June 22, 1976
    Assignee: Dresser Industries, Inc.
    Inventors: Robert Merrill Purton, Robert Brent Maddock