Patents by Inventor Steven A. Daniel

Steven A. Daniel 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: 20230277239
    Abstract: An electrophysiology catheter has an elongated catheter shaft and a distal assembly with a flex circuit and a support member on which the flex circuit is supported in a generally cylindrical form. The support member has a post extending longitudinally through the cylindrical form of the flex circuit which delivers irrigation fluid into the cylindrical form. The post can be configured to define multiple irrigation chambers within the distal assembly. One or more flow directors movable in the post selectively direct irrigation fluid within the distal assembly. Apertures in the flex circuit allow the irrigation fluid to exit to outside the distal assembly.
    Type: Application
    Filed: May 15, 2023
    Publication date: September 7, 2023
    Inventors: Steven A. Daniel, Daniele Ghidoli
  • Patent number: 11648053
    Abstract: An electrophysiology catheter has an elongated catheter shaft and a distal assembly with a flex circuit and a support member on which the flex circuit is supported in a generally cylindrical form. The support member has a post extending longitudinally through the cylindrical form of the flex circuit which delivers irrigation fluid into the cylindrical form. The post can be configured to define multiple irrigation chambers within the distal assembly. One or more flow directors movable in the post selectively direct irrigation fluid within the distal assembly. Apertures in the flex circuit allow the irrigation fluid to exit to outside the distal assembly.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: May 16, 2023
    Assignee: Biosense Webster (Israel) Ltd.
    Inventors: Steven A. Daniel, Daniele Ghidoli
  • Publication number: 20200197082
    Abstract: An electrophysiology catheter has an elongated catheter shaft and a distal assembly with a flex circuit and a support member on which the flex circuit is supported in a generally cylindrical form. The support member has a post extending longitudinally through the cylindrical form of the flex circuit which delivers irrigation fluid into the cylindrical form. The post can be configured to define multiple irrigation chambers within the distal assembly. One or more flow directors movable in the post selectively direct irrigation fluid within the distal assembly. Apertures in the flex circuit allow the irrigation fluid to exit to outside the distal assembly.
    Type: Application
    Filed: December 20, 2018
    Publication date: June 25, 2020
    Inventors: Steven A. Daniel, Daniele Ghidoli
  • Publication number: 20160128761
    Abstract: A tissue ablation system including numerous components and methods is described herein for encircling target tissue and generating tissue ablation volumes in various biological tissues. The biological tissue includes tissue of a variety of organs of the human body including the liver, spleen, kidney, lung, breast and other organs, but is not so limited. The tissue ablation device comprises an energy source and at least one trocar coupled to the energy source, the trocar having a body, a proximal end, and a distal end. The trocar carries an electrode array that comprises a plurality of electrodes, each electrode of the plurality of electrodes is configured to extend from the trocar when moved from a retracted state to a deployed state, and to have at least one radius of curvature in the deployed state so that the electrode array forms a series of shaped electrodes in the deployed state.
    Type: Application
    Filed: June 12, 2015
    Publication date: May 12, 2016
    Inventors: Steven A. DANIEL, David L. MORRIS, Kee Sein LEE
  • Publication number: 20160038228
    Abstract: Energy delivery systems and methods are provided for use in biological tissue. The energy delivery system includes an energy source and an electrode array. The electrode array includes bipolar electrodes positioned so a first spacing between a pair of adjacent electrodes is different relative to a second spacing between at least one other pair of adjacent electrodes. The electrode array and the energy source are coupled and configured to generate uniform energy density in target tissue according to impedance of the target tissue.
    Type: Application
    Filed: March 12, 2015
    Publication date: February 11, 2016
    Inventors: Steven A. DANIEL, David L. MORRIS
  • Patent number: 9060782
    Abstract: A tissue ablation system including numerous components and methods is described herein for encircling target tissue and generating tissue ablation volumes in various biological tissues. The biological tissue includes tissue of a variety of organs of the human body including the liver, spleen, kidney, lung, breast and other organs, but is not so limited. The tissue ablation device comprises an energy source and at least one trocar coupled to the energy source, the trocar having a body, a proximal end, and a distal end. The trocar carries an electrode array that comprises a plurality of electrodes, each electrode of the plurality of electrodes is configured to extend from the trocar when moved from a retracted state to a deployed state, and to have at least one radius of curvature in the deployed state so that the electrode array forms a series of shaped electrodes in the deployed state.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: June 23, 2015
    Assignee: S.D.M.H. PTY. LTD.
    Inventors: Steven A. Daniel, David L. Morris, Kee Sein Lee
  • Patent number: 8986297
    Abstract: Energy delivery systems and methods are provided for use in biological tissue. The energy delivery system includes an energy source and an electrode array. The electrode array includes bipolar electrodes positioned so a first spacing between a pair of adjacent electrodes is different relative to a second spacing between at least one other pair of adjacent electrodes. The electrode array and the energy source are coupled and configured to generate uniform energy density in target tissue according to impedance of the target tissue.
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: March 24, 2015
    Assignee: Resect Medical, Inc.
    Inventors: Steven A. Daniel, David L. Morris
  • Patent number: 8845635
    Abstract: A tissue ablation device and method for tissue ablation are described. The tissue ablation device comprises an energy source and an introducer coupled to the energy source, the introducer having a body, a proximal end, and a distal end. The introducer carries an electrode array that comprises a plurality of electrodes, each electrode of the plurality of electrodes is configured to extend from the body of the introducer when moved from a retracted state to a deployed state. The electrode array is designed to encircle a portion of a target tissue when the electrodes are extended into the deployed state and to form a relatively spherical shaped ablation pattern in a tissue volume surrounding the target tissue when energized by the energy source.
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: September 30, 2014
    Assignee: S.D.M.H. PTY. Ltd.
    Inventors: Steven A. Daniel, David L. Morris, Kee Sein Lee
  • Publication number: 20130197317
    Abstract: A detachable light for use in combination with surgical and diagnostic devices. The detachable light incorporates multiple functions into a minimum number of elements in the housing of the detachable light. The housing includes aligning gripping elements which align the light to a functional centerline of the surgical or diagnostic device. The housing includes multiple light sources on its exterior surface, where the direction of light output may be adjusted. Exterior surfaces of the detachable light which are in contact with patient tissue are formed from an atraumatic material.
    Type: Application
    Filed: February 1, 2012
    Publication date: August 1, 2013
    Inventors: Steven A. Daniel, Claudio I. Zanelli
  • Patent number: 8340868
    Abstract: A steering system for steering a machine having opposing first and second sides with first and second pairs of rotatably mounted rear wheels disposed along the respective sides and at least one rotatably mounted, spaced front wheel. The system includes at least one first drive unit and at least one second drive unit for rotating the rear wheels of the respective pairs, and a steering input device that provides a signal to a controller that produces drive unit request signals to control the drive units to rotate the associated rear wheels along one side at rotational speeds greater than those along the other side to facilitate turning.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: December 25, 2012
    Assignee: Caterpillar Inc.
    Inventors: Norval P. Thomson, Steven A. Daniel, John V. Mount, Christopher E. Bright
  • Patent number: 8261544
    Abstract: A method of braking a hydrostatic drive machine includes steps of reducing a displacement of a pump of a hydrostatic drive system to a non-zero displacement, and increasing a displacement of a motor of the hydrostatic drive system to a displacement that is less than a maximum displacement. The method also includes a step of accelerating an engine of the hydrostatic drive system toward a desired engine speed range.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: September 11, 2012
    Assignee: Caterpillar Inc.
    Inventors: J. Swapna Basana, Steven A. Daniel, Norval Thomson, Michael Anderson, Daniel P. Sergison
  • Patent number: 8262125
    Abstract: A machine (100) includes a frame (102) portion and a tandem wheel arrangement, which includes a main linkage (312) and a stabilizing linkage (322) that are pivotally connected to the frame (102) portion. A first mount (304) and a second mount (304) are pivotally connected to the main linkage (312) and to the stabilizing linkage (322), such that the main linkage (312), the stabilizing linkage (322), the first mount (304), and the second mount (304) define a four-bar-linkage arrangement (202) that operates to transfer unbalanced torque loads from the first mount (304) and the second mount (304) to the frame (102) portion.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: September 11, 2012
    Assignee: Caterpillar Inc.
    Inventors: Daniel Sergison, Norval P. Thomson, Steven A. Daniel, W. Christopher Swick
  • Patent number: 8118706
    Abstract: The machine may have a power system that includes a prime mover, a multiple-ratio transmission, a propulsion device, and power-system controls. The method may include propelling the machine by transmitting power from the prime mover to the propulsion device through the multiple-ratio transmission, while controlling operation of the prime mover and the multiple-ratio transmission with the power-system controls. This may include determining with the power-system controls at least one energy-efficiency estimate based at least on energy-efficiency characteristics of the prime mover and energy-efficiency characteristics of the multiple-ratio transmission. Controlling the prime mover and the multiple-ratio transmission may further include controlling a prime-mover operating speed of the prime mover and a transmission drive ratio of the multiple-ratio transmission based at least in-part on the at least one energy-efficiency estimate.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: February 21, 2012
    Assignee: Caterpillar Inc.
    Inventors: Alan R. Coutant, Michael G. Cronin, Steven A. Daniel, Norval P. Thomson
  • Publication number: 20120006603
    Abstract: A steering system for steering a machine having opposing first and second sides with first and second pairs of rotatably mounted rear wheels disposed along the respective sides and at least one rotatably mounted, spaced front wheel. The system includes at least one first drive unit and at least one second drive unit for rotating the rear wheels of the respective pairs, and a steering input device that provides a signal to a controller that produces drive unit request signals to control the drive units to rotate the associated rear wheels along one side at rotational speeds greater than those along the other side to facilitate turning.
    Type: Application
    Filed: September 23, 2011
    Publication date: January 12, 2012
    Applicant: CATERPILLAR INC.
    Inventors: Norval P. Thomson, Steven A. Daniel, John V. Mount, Christopher E. Bright
  • Patent number: 8061466
    Abstract: A wheel tractor scraper having a rear wheel drive assist, the wheel tractor scraper includes a tractor portion pivotally coupled to a rear scraper portion, the rear scraper portion having a bowl for hauling material and a fluid powered work tool configured to assist in loading the bowl, the work tool powered by a fluid pump connected to a fluid operated work tool motor. The rear wheel drive assist includes a fluid operated drive motor coupled to the rear wheels of the machine, a diverter valve having a first position at which fluid flow is delivered from the pump to the work tool motor and a second position at which fluid flow is delivered from the pump to the drive motor, and a controller being configured to control the diverter valve to engage the rear wheel drive assist. The machine may be operated by engaging the pump and work tool motor, and then actuating the diverter valve to the second position to divert flow from the work tool motor to the drive motor.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: November 22, 2011
    Assignee: Caterpillar Inc.
    Inventors: Douglas J. Carlton, Steven A. Daniel, Daniel P. Sergison, Robert E. Stone, Corwin E. Storer, Norval P. Thomson, Todd M. Weier
  • Patent number: 8051916
    Abstract: A rear wheel drive assist for a wheel tractor scraper, the wheel tractor scraper having a tractor portion with a power source operatively connected to the front driven wheels, and a rear, scraper portion having a bowl, work tool, and first and second rear wheels, the rear wheel drive assist includes a work tool pump fluidly connected to a work tool motor to drive the work tool, fluid operated drive motors operatively connected to the rear wheels, and a diverter valve selectively movable between a first position that delivers fluid flow from the pump to the work tool motor, and a second position that delivers fluid flow from the work tool pump to the rear wheel drive motors.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: November 8, 2011
    Assignee: Caterpillar Inc.
    Inventors: C. Erik Bright, Steven A. Daniel, Bradley J. McManus, Daniel P. Sergison, Norval P. Thomson
  • Patent number: 8055411
    Abstract: A steering system for steering a machine having opposing first and second sides with first and second pairs of rotatably mounted rear wheels disposed along the respective sides and at least one rotatably mounted, spaced front wheel. The system includes at least one first drive unit and at least one second drive unit for rotating the rear wheels of the respective pairs, and a steering input device that provides a signal to a controller that produces drive unit request signals to control the drive units to rotate the associated rear wheels along one side at rotational speeds greater than those along the other side to facilitate turning.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: November 8, 2011
    Assignee: Caterpillar Inc.
    Inventors: Norval P. Thomson, Steven A. Daniel, John V. Mount, Christopher E. Bright
  • Patent number: 8016068
    Abstract: A tandem drive arrangement includes one or more independently driven wheels (118) that are arranged in a tandem configuration along a beam (120). The beam (120) is rotatably connected to a frame (102) of a machine (100). The tandem drive arrangement further includes an actuator (206) operating to selectively impart a rotating moment to the beam (102). The rotating moment tends to rotate the beam (120) in one direction and counteracts a torque imbalance resulting from operation of motors (128) rotating one or more independently driven wheels (118) connected to the beam (120).
    Type: Grant
    Filed: October 23, 2008
    Date of Patent: September 13, 2011
    Assignee: Caterpillar Inc.
    Inventors: Steven A. Daniel, Norval P. Thomson, Daniel Sergison, John V. Mount
  • Publication number: 20110114410
    Abstract: A machine (100) includes a frame (102) portion and a tandem wheel arrangement, which includes a main linkage (312) and a stabilizing linkage (322) that are pivotally connected to the frame (102) portion. A first mount (304) and a second mount (304) are pivotally connected to the main linkage (312) and to the stabilizing linkage (322), such that the main linkage (312), the stabilizing linkage (322), the first mount (304), and the second mount (304) define a four-bar-linkage arrangement (202) that operates to transfer unbalanced torque loads from the first mount (304) and the second mount (304) to the frame (102) portion.
    Type: Application
    Filed: October 13, 2010
    Publication date: May 19, 2011
    Applicant: CATERPILLAR INC.
    Inventors: Daniel Sergison, Norval P. Thomson, Steven A. Daniel, W. Christopher Swick
  • Patent number: 7836967
    Abstract: A radiator of a cooling system is disposed within an engine compartment, between a rear mounted engine and a cab on a wheeled machine. The remaining components within the engine compartment are arranged such that they are lower in height than the radiator, the engine compartment enclosure generally angling down from the cab rearward. The enclosure includes an air intake that opens into a gap between the enclosure and cab. A fan disposed rearward the radiator may pull cooling air through the air intake and past the radiator.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: November 23, 2010
    Assignee: Caterpillar Inc
    Inventors: Steven A. Daniel, Avert Glen Vannette, Daniel Peter Sergison, Norval P. Thomson