Patents by Inventor Robert W. Clark

Robert W. Clark 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).

  • Publication number: 20220354501
    Abstract: Described here are closure devices and methods for ligating tissue, such as the left atrial appendage. Generally, the closure devices include an elongate body, a snare loop assembly comprising a snare and a suture loop, and a shuttle connected to the snare and releasably coupled to the elongate body and retractable therein. In some variations, the shuttle may be configured to fit into the lumen. In other variations, a handle may be attached to the elongate body, and the handle may comprise a track and a snare control coupled to the track. The handle may be configured to release the shuttle from the elongate body and allow movement of the snare control along the track to retract the snare loop and the shuttle into a lumen of the elongate body.
    Type: Application
    Filed: June 9, 2022
    Publication date: November 10, 2022
    Applicant: AtriCure, Inc.
    Inventors: Robert L. CLARK, Alan L. BRADLEY, Gregory W. FUNG
  • Publication number: 20220259615
    Abstract: The invention provides a transgenic Gossypium hirsutum event MON 88702, plants, plant cells, seeds, plant parts, progeny plants, and commodity products comprising event MON 88702. The invention also provides polynucleotides specific for event MON 88702, plants, plant cells, seeds, plant parts, progeny plants, and commodity products comprising polynucleotides for event MON 88702. The invention also provides methods related to event MON 88702.
    Type: Application
    Filed: February 25, 2022
    Publication date: August 18, 2022
    Inventors: Waseem Akbar, Robert S. Brown, Wen C. Burns, Thomas L. Clark, Stanislaw Flasinski, Anilkumar Gowda, Aihong Pan, Xiaohong Shi, Jason W. Stelzer, Kunsheng Wu
  • Patent number: 11389167
    Abstract: Closure devices and methods are provided for ligating tissue, such as the left atrial appendage. Generally, the closure devices include an elongate body, a snare loop assembly comprising a snare and a suture loop, and a shuttle connected to the snare and releasably coupled to the elongate body and retractable therein. In some variations, the shuttle may be configured to fit into the lumen. In other variations, a handle may be attached to the elongate body, and the handle may comprise a track and a snare control coupled to the track. The handle may be configured to release the shuttle from the elongate body and allow movement of the snare control along the track to retract the snare loop and the shuttle into a lumen of the elongate body.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: July 19, 2022
    Assignee: AtriCure, Inc.
    Inventors: Robert L. Clark, III, Alan L. Bradley, Gregory W. Fung
  • Patent number: 5031192
    Abstract: This is a spread spectrum radio frequency (RF) communication system whose rpose is to "spread" the information bandwidth such that when it is de-spread any atmospheric interference (including jamming is spread rather than de-spread. A "low probability of exploitation" is obtained through the use of multiple modulations each of which creates a distinct spread spectrum symbol at the transmitter, and the reception of which requires a "match" condition at the receiver to determine the data bit state. The symbol sequence is known by the appropriate receivers and the collection of data bits forms a message.
    Type: Grant
    Filed: February 5, 1990
    Date of Patent: July 9, 1991
    Assignee: United States of America as Represented by the Secretary of the Air Force
    Inventor: Robert W. Clark
  • Patent number: 4901757
    Abstract: A one way valve includes a valve housing. A valve compartment is located with the valve housing. An inlet and an outlet port are mounted in the valve housing to provide communication with the valve compartment. The inlet port has an inner cylindrical portion extending into the valve compartment. A cup shaped valve cap is movably mounted on the inner portion of the inlet port between two positions. One in which orifices in the inner portion of the inlet port are uncovered to open the valve, and a second position in which the free edge of the valve cap engages a seal mounted in the valve compartment and surrounding the inner portion of the inlet port to close the valve. When the valve is closed the inner portion of the inlet port is completely enclosed within the valve cap. Movement of the valve cap to open the valve is limited by the cap engaging a portion of the outlet port which projects into the valve compartment.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: February 20, 1990
    Inventor: Robert W. Clark, Jr.
  • Patent number: 4617801
    Abstract: A thermally powered engine which obtains energy from a closed heat transfer loop. The engine has two power cylinders. A piston is reciprocally mounted within each cylinder and divides the interior space of each cylinder into two portions. A piston rod is affixed to each piston and extends through the upper closed end of each cylinder. A flexible diaphragm is mounted in the lower portion of each cylinder and with the lower closed end of the cylinder forms a power chamber. A fluid fills the upper portion of both cylinders. A passageway between the cylinders permits the fluid to act as a free piston causing the piston of the cylinder in its exhaust stroke to force refrigerant from its power chamber to the condenser of the heat transfer loop. Refrigerant from the evaporator of the transfer loop flowing into a power chamber forces the piston upward during the pistons power stroke. Valves regulate the flow of refrigerant into and out of the power chambers of each of the power cylinders.
    Type: Grant
    Filed: December 2, 1985
    Date of Patent: October 21, 1986
    Inventor: Robert W. Clark, Jr.
  • Patent number: 4537036
    Abstract: A thermally powered heat transfer system consisting of two closed heat transfer loops which share a compressor which is powered alternately by the refrigerants of the two loops. This system is powered by a single heat source with a portion of the heat from that heat source being transferred at a higher temperature to a structure to be heated, the balance being transferred to a low temperature external heat sink. The first loop includes an evaporator and the condenser within the structure to be heated, and is charged with a first refrigerant. The second loop includes an evaporator and a condenser located so as to transfer heat to an external heat sink. The second loop is charged with a refrigerant having a lower boiling point than the refrigerant in the first loop.
    Type: Grant
    Filed: September 27, 1984
    Date of Patent: August 27, 1985
    Inventor: Robert W. Clark, III
  • Patent number: 4537037
    Abstract: A thermally powered heat transfer system which sequentially displaces thermal energy from the highest temperature heat source through two or more high temperature heat transfer loops to a heat sink. The system includes two or more two chamber compressors, with the high temperature chamber of each compressor being included in a high temperature heat transfer loop, there being a high temperature heat transfer loop for each compressor. The low temperature chamber of each compressor is included in one or more low temperature heat transfer loops. The source of heat for the evaporator heat exchanger of each high temperature heat transfer loop except one being heat from the condenser heat exchanger of another high temperature loop. The heat exchangers for the low temperature heat transfer loops being interchangeable depending on the mode of operation at any given time.
    Type: Grant
    Filed: October 31, 1984
    Date of Patent: August 27, 1985
    Inventor: Robert W. Clark, Jr.
  • Patent number: 4450690
    Abstract: Method and apparatus for transferring heat. A pair of closed loop heat transfer loops each includes a refrigerant, a condenser to remove heat from the refrigerant, and an evaporator which adds heat to the refrigerant from its associated heat source. Each loop also includes a chamber of a compressor which has a free piston common to both chambers. One of the chambers is located above the other so that in one of the two cycles of operation, thermal energy from a heat source of the loop including the upper chamber evaporates liquified refrigerant collected in a collector of the loop in the previous cycle of operation which vapor together with gravity acting on the free piston cause the piston to compress vaporized refrigerant of the other loop in the lower chamber. This compressed refrigerant is condensed by loss of heat to an associated heat sink and is collected in the collector of its loop.
    Type: Grant
    Filed: January 10, 1983
    Date of Patent: May 29, 1984
    Inventor: Robert W. Clark, Jr.
  • Patent number: 4418547
    Abstract: A thermally powered heat transfer system consisting of two closed heat transfer loops which share a compressor which is alternately powered by the refrigerants of the two loops. This system is powered by two heat sources having different temperatures of which the lower temperature heat source may be the heat within a structure to be cooled. An evaporator of the first loop located within the structure to be cooled is charged with a low boiling point refrigerant while an evaporator of the second loop is heated by a higher temperature heat source and is charged with a higher boiling point refrigerant. The heat sinks of the loops are at temperatures between those of the two heat sources. Controls are activated at the completion of each compressor stroke, or cycle, to alternately open and close valves which regulate vapor and liquid flows to cause the compressor to act with compressive force upon one or the other refrigerant vapor during each cycle of operation of the system to effect useful heat transfer.
    Type: Grant
    Filed: August 30, 1982
    Date of Patent: December 6, 1983
    Assignee: The Saint E. Company, Inc.
    Inventor: Robert W. Clark, Jr.
  • Patent number: 4386345
    Abstract: A color cathode ray tube display apparatus particularly for use under a wide range of ambient light conditions, such as in an aircraft cockpit, wherein each of the primary color phosphors has a unique brightness versus cathode drive characteristic, which characteristic also is dependent upon whether the displayed information is raster written or stroke written and wherein such characteristics also may vary from tube to tube. The output of at least one cockpit ambient light sensor in addition to a pilot selected brightness is used on a continuous basis to calculate a reference brightness level for the sensed ambient brightness conditions and display writing mode, this reference brightness level being used to calculate the corresponding brightness level for each of the primary color components of the commanded symbology color and concomitant drive voltages to the CRT's cathode or cathodes.
    Type: Grant
    Filed: September 22, 1981
    Date of Patent: May 31, 1983
    Assignee: Sperry Corporation
    Inventors: Parm L. Narveson, Robert W. Clark, Lawrence C. Hannert
  • Patent number: 4157014
    Abstract: Temperature induced density differences between two connected columns of a fluid establish a pressure differential which is converted into kinetic energy for driving a power generating unit responsive to fluid flow.
    Type: Grant
    Filed: February 13, 1976
    Date of Patent: June 5, 1979
    Inventor: Robert W. Clark, Jr.
  • Patent number: 3949364
    Abstract: A banking system, equipment and operations are provided which dispense cash at an unmanned station from a money vault unit at a remote station to a customer who verifies his identity at the unmanned station. The system and equipment also may accept deposits from the customer at the unmanned station and convey the deposits to a depository unit at the remote station. The unmanned station may be combined in a blank drive-up or walk-up service unit served by a teller located at either the unmanned or the remote station during business hours. The automatic equipment at the unmanned station and the money vault and depository units at the remote station provide maximum security for money or articles handled. Along with this security feature, the automatic equipment does not require the presence of a teller to provide banking services for customers during non-business hours.
    Type: Grant
    Filed: August 2, 1974
    Date of Patent: April 6, 1976
    Assignee: Diebold, Incorporated
    Inventors: Robert W. Clark, Robert P. Barone, Donald E. Kinker
  • Patent number: D319525
    Type: Grant
    Filed: April 13, 1987
    Date of Patent: September 3, 1991
    Inventor: Robert W. Clark