Patents by Inventor James L. Day

James L. Day 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: 10422210
    Abstract: The invention discloses a method of solution mining trona by injecting an aqueous solvent into an underground cavity comprising trona to dissolve trona in the aqueous solution and removing the aqueous solution from the cavity at about the WTN triple point (the temperature at which solid phase wegscheiderite, trona, and nahcolite can co-exist in an aqueous solution). Alkaline values from the removed aqueous solution are recovered to produce a barren liquor. The method further includes either (i) treating the barren liquor to produce an aqueous solvent or (ii) treating injected aqueous solvent to reduce clogging at the trona dissolution surface caused by supersaturation of sodium bicarbonate, and precipitation of nahcolite and wegscheiderite as the aqueous solution in the cavity approaches saturation of both dissolved sodium bicarbonate and sodium carbonate.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: September 24, 2019
    Assignee: Sesqui Mining, LLC.
    Inventors: Roger L. Day, James A. Herickhoff
  • Patent number: 7229451
    Abstract: A three-pin skull clamp [10] includes a C-shaped frame [12] which partially encircles the head [18] of the patient, with a spring-loaded single skull pin assembly [22] located at one end of the frame [12] and adapted to engage the head [18] of the patient with a desired engagement force, and two spaced skull pins [30] mounted to a rocker arm [44] located at an opposite end of the frame [12]. Each of the rocker arm skull pins [30] resides in operative contact with an indicator cap [66] held by a spring-loaded pin carrier assembly [50], the indicator cap [66] being movable relative to the rest of the pin carrier assembly [50] in response to the engagement force applied to the corresponding skull pin [30] by the head [18] of the patient. By visibly comparing the positions of the indicator caps [66] relative to their respective pin carrier assemblies [50], one can readily determine whether the engagement forces are equally distributed between the two rocker arm skull pins [30].
    Type: Grant
    Filed: October 17, 2003
    Date of Patent: June 12, 2007
    Assignee: Integra Ohio, Inc.
    Inventors: James L. Day, Donald A. Lincoln
  • Publication number: 20040097985
    Abstract: A three-pin skull clamp [10] includes a C-shaped frame [12] which partially encircles the head [15] of the patient, with a spring-loaded single skull pin assembly [22] located at one end of the frame [12] and adapted to engage the head [15] of the patient with a desired engagement force, and two spaced skull pins [30] mounted to a rocker arm [44] located at an opposite end of the frame [12]. Each of the rocker arm skull pins [30] resides in operative contact with an indicator cap [66] held by a spring-loaded pin carrier assembly [50], the indicator cap [66] being movable relative to the rest of the pin carrier assembly [50] in response to the engagement force applied to the corresponding skull pin [30] by the head [15] of the patient.
    Type: Application
    Filed: October 17, 2003
    Publication date: May 20, 2004
    Applicant: Ohio Medical Instrument Company, Inc.
    Inventors: James L. Day, Donald A. Lincoln
  • Patent number: 6629982
    Abstract: A three-pin skull clamp includes a C-shaped frame which partially encircles the head of the patient, with a spring-loaded single skull pin assembly located at one end of the frame and adapted to engage the head of the patient with a desired engagement force, and two spaced skull pins mounted to a rocker arm located at an opposite end of the frame. Each of the rocker arm skull pins resides in operative contact with an indicator cap held by a spring-loaded pin carrier assembly, the indicator cap being movable relative to the rest of the pin carrier assembly in response to the engagement force applied to the corresponding skull pin by the head of the patient. By visibly comparing the positions of the indicator caps relative to their respective pin carrier assemblies, one can readily determine whether the engagement forces are equally distributed between the two rocker arm skull pins.
    Type: Grant
    Filed: April 17, 2001
    Date of Patent: October 7, 2003
    Assignee: Ohio Medical Instrument Company, Inc.
    Inventors: James L. Day, Donald A. Lincoln
  • Publication number: 20020151907
    Abstract: A three-pin skull clamp includes a C-shaped frame which partially encircles the head of the patient, with a spring-loaded single skull pin assembly located at one end of the frame and adapted to engage the head of the patient with a desired engagement force, and two spaced skull pins mounted to a rocker arm located at an opposite end of the frame. Each of the rocker arm skull pins resides in operative contact with an indicator cap held by a spring-loaded pin carrier assembly, the indicator cap being movable relative to the rest of the pin carrier assembly in response to the engagement force applied to the corresponding skull pin by the head of the patient. By visibly comparing the positions of the indicator caps relative to their respective pin carrier assemblies, one can readily determine whether the engagement forces are equally distributed between the two rocker arm skull pins.
    Type: Application
    Filed: April 17, 2001
    Publication date: October 17, 2002
    Inventors: James L. Day, Donald A. Lincoln
  • Patent number: 6423077
    Abstract: An apparatus and method are disclosed for displaying a path between a selected target and selected points on a patient's skull and for guiding surgical instruments along any selected path. The system is comprised of an image display system, an articulated arm and probe, and a stereotactic system. The sub-systems are coupled to one another so that the articulated probe may be used to select patient fiducial points that correspond to selected image fiducial points. Using these points, the image display system coregisters the external locations to the displayed images so that the probe condition may be displayed with the displayed images. The system further permits the identification of a selected target within a patient's brain and to project a path from the external position to the target prior to the performance of a craniotomy. After evaluation of the path, a surgeon may lock the stereotactic system in place to preserve a selected surgical path and to guide instruments along that path.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: July 23, 2002
    Assignee: Ohio Medical Instrument Company, Inc.
    Inventors: Mark Carol, James L. Day, Erik G. Miller, Robert J. Riker
  • Publication number: 20010039422
    Abstract: An apparatus and method are disclosed for displaying a path between a selected target and selected points on a patient's skull and for guiding surgical instruments along any selected path. The system is comprised of an image display system, an articulated arm and probe, and a stereotactic system. The sub-systems are coupled to one another so that the articulated probe may be used to select patient fiducial points that correspond to selected image fiducial points. Using these points, the image display system coregisters the external locations to the displayed images so that the probe condition may be displayed with the displayed images. The system further permits the identification of a selected target within a patient's brain and to project a path from the external position to the target prior to the performance of a craniotomy. After evaluation of the path, a surgeon may lock the stereotactic system in place to preserve a selected surgical path and to guide instruments along that path.
    Type: Application
    Filed: July 13, 2001
    Publication date: November 8, 2001
    Applicant: Ohio Medical Instrument Company, Inc.
    Inventors: Mark Carol, James L. Day, Erik G. Miller, Robert J. Riker
  • Patent number: 6261300
    Abstract: An apparatus and method are disclosed for displaying a path between a selected target and selected points on a patient's skull and for guiding surgical instruments along any selected path. The system is comprised of an image display system, an articulated arm and probe, and a stereotactic system. The sub-systems are coupled to one another so that the articulated probe may be used to select patient fiducial points that correspond to selected image fiducial points. Using these points, the image display system coregisters the external locations to the displayed images so that the probe condition may be displayed with the displayed images. The system further permits the identification of a selected target within a patient's brain and to project a path from the external position to the target prior to the performance of a craniotomy. After evaluation of the path, a surgeon may lock the stereotactic system in place to preserve a selected surgical path and to guide instruments along that path.
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: July 17, 2001
    Assignee: Ohio Medical Instrument Company, Inc.
    Inventors: Mark Carol, James L. Day, Erik G. Miller, Robert J. Riker
  • Patent number: 6071288
    Abstract: An apparatus and method are disclosed for displaying a path between a selected target and selected points on a patient's skull and for guiding surgical instruments along any selected path. The system is comprised of an image display system, an articulated arm and probe, and a stereotactic system. The sub-systems are coupled to one another so that the articulated probe may be used to select patient fiducial points that correspond to selected image fiducial points. Using these points, the image display system coregisters the external locations to the displayed images so that the probe condition may be displayed with the displayed images. The system further permits the identification of a selected target within a patient's brain and to project a path from the external position to the target prior to the performance of a craniotomy. After evaluation of the path, a surgeon may lock the stereotactic system in place to preserve a selected surgical path and to guide instruments along that path.
    Type: Grant
    Filed: December 6, 1997
    Date of Patent: June 6, 2000
    Assignee: Ohio Medical Instrument Company, Inc.
    Inventors: Mark Carol, James L. Day, Erik G. Miller, Robert J. Riker
  • Patent number: 5891157
    Abstract: A noninvasive apparatus for supporting tools associated with a stereotactic apparatus and procedures to guide tools along any selected path. In one embodiment of the invention, the tool support system is mounted to a skull clamp holding a patient's head. In another embodiment, the tool holder and an articulated arm and probe are mounted to the tool support system which in turn, is mounted to the side rails of a table supporting a patient. With the second embodiment, stereotactic procedures can be practiced with respect to any part of the patient's body.
    Type: Grant
    Filed: April 26, 1996
    Date of Patent: April 6, 1999
    Assignee: Ohio Medical Instrument Company, Inc.
    Inventors: James L. Day, Ali Mowlai-Ashtiani
  • Patent number: 5695501
    Abstract: An apparatus and method are disclosed for displaying a path between a selected target and selected points on a patient's skull and for guiding surgical instruments along any selected path. The system is comprised of an image display system, an articulated arm and probe, and a stereotactic system. The sub-systems are coupled to one another so that the articulated probe may be used to select patient fiducial points that correspond to selected image fiducial points. Using these points, the image display system coregisters the external locations to the displayed images so that the probe condition may be displayed with the displayed images. The system further permits the identification of a selected target within a patient's brain and to project a path from the external position to the target prior to the performance of a craniotomy. After evaluation of the path, a surgeon may lock the stereotactic system in place to preserve a selected surgical path and to guide instruments along that path.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: December 9, 1997
    Assignee: Ohio Medical Instrument Company, Inc.
    Inventors: Mark Carol, James L. Day, Erik G. Miller, Robert J. Riker
  • Patent number: 5276927
    Abstract: A head support for a patient support table having a skull securing clamp that is mounted to a non-circular support bar for selective attachment to the side rails of the patient support table. The skull clamp includes a non-circular support aperture for receiving the non-circular support bar. The structural components of the head support are made from radiolucent material and the support bar includes mounting posts at its first and second ends so that arms for mounting the support bar to the side rails may be located out of the path of the x-rays through the patient's head. The non-circular shape of the support aperture and the support bar prevent inadvertent rotation of the radiolucent skull securing clamp with respect to the radiolucent support bar. The location of the mounting posts on the support arms and the utilization of the radiolucent material results in fewer artifacts in the developed x-ray picture.
    Type: Grant
    Filed: September 21, 1992
    Date of Patent: January 11, 1994
    Assignee: Ohio Medical Instrument Co.
    Inventor: James L. Day
  • Patent number: 5269034
    Abstract: A surgical head clamp having a C-shaped frame with a fixed head engaging pin on one side and a pair of head engaging pins on the opposite side. The opposite side of the clamp also has a rotation mechanism for adjusting the angular position of the pair of head engaging pins and a translation mechanism for linearly moving the pair of head engaging pins with respect to the fixed head engaging pin.
    Type: Grant
    Filed: December 22, 1992
    Date of Patent: December 14, 1993
    Assignee: Ohio Medical Instrument Company, Inc.
    Inventors: James L. Day, Charles Dinkler
  • Patent number: 5198809
    Abstract: Inputs are programmably interfaced and interlocked with output so that the state of the outputs and the operation of equipment connected thereto depends on the hierarchy or priority (control strategy) which is programmed into the controller. The inputs may be contacts (switch closures) of switches which are thrown to operate HVAC units and high or low limit sensors such as thermostats and pressure sensors of an HVAC system. The outputs operate the motor controls of motors which drive the blowers, fans, pumps, dampers and the like of the HVAC system for environmental control and the safety both of the occupants of a facility and the HVAC equipment therein. The programmable controller has an on-matrix and an off-matrix of switch points which are arranged in columns and rows. Each row of switch points is connected to an input circuit. The columns of switch points in the on-matrix are connected to the outputs via control logic to which each column of switch points is connected.
    Type: Grant
    Filed: February 22, 1991
    Date of Patent: March 30, 1993
    Assignee: James L. Day Co. Inc.
    Inventor: James L. Day
  • Patent number: 4892545
    Abstract: A vertebral lock mountable in a cavity surgically formed in a vertebra, to separate and stabilize the adjacent vertebrae above and below the cavity. Oppositely extending pins project upwardly and downwardly from a generally cylindrical body which is insertable in the cavity. The pins are fixed vertically by a spline which is slid between their inner ends, at a right angle, to prevent the pins from loosening.
    Type: Grant
    Filed: July 14, 1988
    Date of Patent: January 9, 1990
    Assignee: Ohio Medical Instrument Company, Inc.
    Inventors: James L. Day, Richard B. Budde
  • Patent number: 4873873
    Abstract: A system for metering the flow rate of air through a duct in which gates are pivotally mounted and connected together to vary the area of the duct. The gates are balanced so as to be effectively weightless. The forces on and the position of the gates correspond to the pressure and the flow rate in the duct thereby avoiding the need for air pressure transducers exposed to the pressure in the duct. The forces due to the pressure in the duct are amplified by the gates so that the pressure measurement as a function of the forces on the gates is a much more sensitive function of the flow rate through the duct than is obtainable directly in response to the pressure in the duct (for example, the velocity pressure of air as measured by pressure transducers responsive directly to the velocity pressure in the duct).
    Type: Grant
    Filed: February 1, 1988
    Date of Patent: October 17, 1989
    Assignee: James L. Day Co., Inc.
    Inventor: James L. Day
  • Patent number: 4827372
    Abstract: An assembly for mounting and connecting components, either electrical or pneumatic devices, which are arranged on boards such as printed circuit boards. A channel having a base and flexible side walls receives the edges of the boards in grooves along the side wall. Flexible sidewalls spread apart to receive the boards and lock them in the grooves. Several boards may be located in a channel in end to end relationship. Conduits are defined between the insides of the side walls, the base and the side of the boards facing the base. The components on the boards are located on the outside. Wiring and tubing lines extend through the openings in the boards into the conduits and extend along the conduits. End plates at the opposite ends of the conduits may be used to close the ends of the conduits except for openings through which the wiring and tubing extends.
    Type: Grant
    Filed: June 10, 1988
    Date of Patent: May 2, 1989
    Assignee: James L. Day Co., Inc.
    Inventor: James L. Day
  • Patent number: 4605160
    Abstract: Apparatus for blending and destratification of outside and return air streams which are cooled or heated, as by fluid containing heat transfer coils, and discharged into a building. Gates control the flow and blending of outside and inside air in a casing in a region defined at its downstream end by the coils and at its upstream end by the gates which project into the region. The gates are pivotally mounted and vary the volume in the region, and also increase the velocity of air therein to prevent stratification. An array of sensors monitors the temperature of the air passing through the coils and controls the gates, especially when the velocity is low, thereby preventing any freezing of the fluid in the coils which can cause damage. The gates may be panels filled with insulation which provide a seal to protect the coils when the apparatus is not in use.
    Type: Grant
    Filed: June 8, 1984
    Date of Patent: August 12, 1986
    Inventor: James L. Day
  • Patent number: 4545572
    Abstract: Apparatus for holding a patient's head for surgery thereon so that the head is accessible from ear to ear and from occiput to and including the orbits. The apparatus holds the head clamped between opposed clamp pads. Rear support means engages the posterior of the head and a pair of face pads are adjustably positionable just below the cheekbones of the patient and are lockable in such position. The face pads and rear support means are releasably movable toward one another to hold the head securely between them.
    Type: Grant
    Filed: August 20, 1984
    Date of Patent: October 8, 1985
    Assignee: Ohio Medical Instrument Company, Inc.
    Inventor: James L. Day
  • Patent number: 4484122
    Abstract: A controller for operating devices adapted for motor control, such as dampers, valves and the like in a heating, ventilating and air conditioning (HVAC) system interfaces with a serial link which may carry control signals for operating a multiplicity of controllers on a time division multiple access (TDMA) basis has digital circuitry responsive to the control signals which translates them into digital signals which are stored between access times. Two series connected pluralities of resistors define, between their opposite ends and their junction points, a potentiometer which is variable by normally open and normally closed contacts which individually are connected across each resistor in each of the pluralities. The switches are operated in response to the digital signals so as to vary the resistance presented by the potentiometer between the opposite ends thereof and the junction.
    Type: Grant
    Filed: May 16, 1983
    Date of Patent: November 20, 1984
    Assignee: James L. Day Co., Inc.
    Inventors: James L. Day, Terry D. Seim