Patents Represented by Law Firm Dunlap, Codding & McCarthy
  • Patent number: 4266564
    Abstract: A coin release assembly for selectively removing a coin element from a coin tube retaining a plurality of coin elements, the coin tube having a coin exit end with a coin exit opening formed through the coin exit end to permit discharge of the coin elements therethrough, the assembly comprising a base plate having an opening extending therethrough, the opening in the base plate being offset with respect to the coin exit opening of the coin tube such that a portion of the base plate supports the coin elements within the coin tube, and a coin ejecting assembly movable from a first position to a second position, the coin ejecting assembly engagable with a lowermost coin element supported in the coin tube by the base plate for moving the engaged coin element to the opening in the base plate for discharging the coin element through the opening in the base plate.
    Type: Grant
    Filed: October 1, 1979
    Date of Patent: May 12, 1981
    Assignee: Orin W. Coburn
    Inventors: C. David Coburn, Rex M. Maloy
  • Patent number: 4264601
    Abstract: Riboflavin analogues, including both endo- and exocyclically substituted isoalloxazines which are competitive inhibitors of the enzyme flavokinase (EC 2.7.1.26) when administered in a non-toxic dosage, effectively reduce the blood pressure of a subject suffering from hypertension.
    Type: Grant
    Filed: June 12, 1979
    Date of Patent: April 28, 1981
    Assignee: The Board of Regents of the University of Oklahoma
    Inventor: Daniel Trachewsky
  • Patent number: 4258279
    Abstract: An improved magnetic sensor assembly comprising a permanent magnet recessed within a pole extension magnet with a pick-up coil disposed around a portion of the pole extension magnet, each of the permanent and pole extension magnets having one end thereof substantially coplanar. The sensor assembly may be enclosed within a magnetic shield having an access opening providing access to the sensing region of the sensor assembly.
    Type: Grant
    Filed: September 5, 1978
    Date of Patent: March 24, 1981
    Assignee: Orin W. Coburn
    Inventor: Jiri J. Hovorka
  • Patent number: 4254793
    Abstract: A ball valve is disclosed wherein seal assemblies, extending about flow passages in the body of the valve to either side of a valve chamber containing the ball, are constructed to vent excess pressure in portions of the valve chamber cut off from the flow passages by the sealing of the seal assemblies to the ball and to the valve body without the need for backing the seal assemblies away from the ball. For this purpose, the seal between the valve body and each seal assembly is formed by an elastomeric biasing ring which is bonded on one side to the valve body or to other portions of the seal assembly and has an opposite, free side engaging the other of the valve body or other portions of the seal assembly. The biasing ring is positioned on a side of the seal assembly opposite the ball and fluid pressure in the cut off portion of the valve chamber is transmitted about the seal assembly to the free side of the biasing ring for venting thereacross into a flow passage.
    Type: Grant
    Filed: January 15, 1979
    Date of Patent: March 10, 1981
    Inventor: Domer Scaramucci
  • Patent number: 4254459
    Abstract: A direct current-to-direct current converter is disclosed wherein a saturable core oscillator provides squarewave alternating current signals to the bases of two transistors of a class B push-pull amplifier such that the two transistors are alternately biased into conducting states. Each transistor controls the current in one section of a center-tapped primary winding of a transformer such that the alternation of conduction between transistors produces an alternating flux density in the core of the transformer and direct current is provided by rectifying and filtering the alternating current induced thereby in the secondary winding of the transformer.
    Type: Grant
    Filed: January 8, 1979
    Date of Patent: March 3, 1981
    Assignee: JMJ Electronics Corp.
    Inventor: James M. Belson
  • Patent number: 4252144
    Abstract: A tilting disc check valve wherein a valve module containing the tilting disc is positioned adjacent the inlet of the valve into a valve chamber by a cradle formed by a portion of the interior surface of the wall of the valve chamber and an arcuate ridge formed on such interior surface and spaced a distance from the inlet. A threaded port is formed through the wall of the valve chamber opposite the ridge and a bung, screwed into the port, closes the port and bears against the valve module to seat the module in the cradle provided for the module.
    Type: Grant
    Filed: May 3, 1979
    Date of Patent: February 24, 1981
    Inventor: Domer Scaramucci
  • Patent number: 4249555
    Abstract: A fire safe disc valve comprising a valve body having a flow passageway therethrough, a disc shaft rotatably mounted in the flow passageway and a disc mounted on the disc shaft, the disc being rotatable to and from a position normally closing the flow passageway by sealingly engaging a disc sealing member. An operating stem, extending through a stem operating aperture in the valve body, engages the disc shaft for rotation thereof, and an elastomeric packer seals the aperture about the operating stem. The disc shaft is displaceable along the flow passageway whereby the disc will close the passageway if the disc sealing member is destroyed, and the operating stem is axially displaceable in the stem operating aperture whereby the aperture is sealed by fluid pressure pressing the operating stem against a stem sealing seat if the stem packer is destroyed.
    Type: Grant
    Filed: December 30, 1977
    Date of Patent: February 10, 1981
    Inventor: Domer Scaramucci
  • Patent number: 4250352
    Abstract: A system for monitoring the operating condition of one or more reporting devices, which incorporates a telephone network connecting a remote terminal and a monitor terminal. A control circuit is provided in which one or more monitor relays are interposed, each monitor relay opening independently in response to a change in operating condition of a reporting device. When a monitor relay opens, current flow is interrupted to a return signal control relay, which thereby short-circuits the subscriber loop to the remote terminal, so that a busy signal is returned in response to calls from the monitor terminal. When all monitor relays are closed, indicating all reporting devices to be in normal condition, the return signal control relay is energized, opening the short circuit in the subscriber loop. Accordingly, a ringing signal is returned in response to calls to the remote terminal.
    Type: Grant
    Filed: May 10, 1979
    Date of Patent: February 10, 1981
    Inventor: William S. Workman, Sr.
  • Patent number: 4245728
    Abstract: An improved apparatus for opening and closing door members wherein the door member is connected to an output shaft, the rotation of the output shaft opening and closing the door member. A brake drive assembly is connected to the output shaft and constructed such that a torque applied at the output shaft causes the brake drive assembly to be conditioned in the braking mode. A ball drive assembly is connected to the output shaft and constructed such that the output shaft is rotated in response to the rotation of a portion of the ball drive assembly.
    Type: Grant
    Filed: May 8, 1978
    Date of Patent: January 20, 1981
    Assignee: LSB Industries, Inc.
    Inventor: Riza E. Murteza
  • Patent number: 4237821
    Abstract: An improved loader feeder apparatus for loading, transporting and feeding bales of hay and the like which includes a tine assembly connected to an axle which is pivotally movable on the axle to a loading position wherein a portion of the tine assembly is engagable with a bale of hay and the like for securing the bale of hay and the like to the tine assembly and which is pivotally movable on the axle to a hauling position wherein the tine assembly cooperates to support a bale of hay and the like a distance above the ground for transporting the bale of hay and the like to various locations. The loader feeder apparatus includes a rear wall assembly which is connected to the axle, a first side wall assembly which is connected to the rear wall assembly, a second side wall assembly which is connected to the rear wall assembly, a first gate assembly which is hingedly connected to the first side wall assembly and a second gate assembly which is hingedly connected to the second side wall assembly.
    Type: Grant
    Filed: October 22, 1979
    Date of Patent: December 9, 1980
    Inventor: H. M. Haines
  • Patent number: 4235121
    Abstract: An improved chain speed reducer assembly comprising a drive shaft supported at one end by a first bearing block and by a second bearing block at the other end. Each of the bearing blocks has a shaft supporting bore that is axially displaced a predetermined offset distance from the central axis of the bearing block, and each of the bearing blocks is supported by a gear box frame so as to be selectively rotatable about the central axis of each bearing block. Attaching bolt connectors permit the bearing blocks to be secured at selected angular dispositions. This permits selective canting of the drive shaft, and when coupled with other similarly supported driven shafts supporting plural sprockets, separate strands of roller chains can be adjusted independently via the eccentric movement of the bearing block supporting bores upon selective rotation of the bearing blocks.
    Type: Grant
    Filed: October 26, 1978
    Date of Patent: November 25, 1980
    Assignee: Cook Machine Company
    Inventor: Greg Cook
  • Patent number: 4231242
    Abstract: A plug for a key operated lock is provided with a plurality of bores transverse to the key slot formed through the plug. The bores accept studs which extend into the key slot to delimit the design of key blanks from which keys, fitting the lock, can be constructed. The selection of bores to contain studs permits rapid change of key blank designs for the lock.
    Type: Grant
    Filed: October 23, 1978
    Date of Patent: November 4, 1980
    Assignee: U-Change Lock Industries, Inc.
    Inventors: Lewis J. Hill, Bill J. Dillard
  • Patent number: 4232317
    Abstract: An object location system wherein signals are transmitted or received via more than one transmit station and wherein the objects receive signals from the transmit stations or transmit signals for reception by the treatment stations within a data base region and wherein location coordinates are established in response to the signals received by the transmit stations or in response to the signals received at the object from the transmit stations at a predetermined number of geographic locations within the data base region by positioning the object receiver or transmitter at each of the predetermined geographic locations. The objects are located within the data base region by comparing location coordinates determined in response to signals received at the transmit stations or in response to signals received at the objects with the established location coordinates.
    Type: Grant
    Filed: November 1, 1978
    Date of Patent: November 4, 1980
    Inventor: Charles C. Freeny, Jr.
  • Patent number: 4230139
    Abstract: A pressure actuated seat ring for a disc valve has a tubular, relatively flexible portion extending axially from a radially thicker, relatively inflexible portion. The flexible portion of the seat ring extends circumferentially about the disc of the valve when the valve is closed and a cavity is formed about the flexible portion such that fluid pressure in the cavity tends to force the flexible portion of the seat ring against the disc. The ends of the cavity are vented to the flow passage of the valve at opposite sides of the disc and an elastomeric sealing ring mounted on the tubular portion of the seat ring is movable within the cavity in response to a pressure differential at the vents to seal the vent exposed to the lower pressure so that the larger pressure is transmitted to the cavity.
    Type: Grant
    Filed: November 13, 1978
    Date of Patent: October 28, 1980
    Inventor: Domer Scaramucci
  • Patent number: 4230150
    Abstract: A tilting disc check valve is provided with a valve assembly comprising a clapper assembly and an annular seal member. The seal member abuts an annular face extending about an inlet passage of the valve and the opposing face of the seal member is abutted by a clapper support member, forming a portion of the clapper assembly, having the form of an interrupted ring. A clapper is pivotally mounted on the clapper support member via a tab extending into the interruption formed therein. A hole formed in the clapper support member and intersecting the interruption thereof and an aperture formed through the tab permit the tab to be connected to the clapper support member via the insertion of a pin into the hole and the aperture.
    Type: Grant
    Filed: February 22, 1979
    Date of Patent: October 28, 1980
    Inventor: Domer Scaramucci
  • Patent number: 4225986
    Abstract: A mechanism for releasing a selected volume of water from a tank has a U-shaped bracket which mounts on the interior of the tank via a bushing which passes through a hole in the wall of the tank. A rod is pivotally supported by the bushing and, in turn, supports a valve which mates with the tank drain when the rod is pivoted to raise a valve support arm to which the valve is attached. A key on a latch arm pivotally mounted on the bracket falls into a notch in the periphery of a latch collar on the rod when the rod is pivoted to raise the valve so that water is drained from the tank so long as the key is engaged by the notch. A float collar journally mounted on the rod is positioned by a float as the water level falls to move an electrical contacting member on the float collar along an arcuate path.
    Type: Grant
    Filed: June 25, 1979
    Date of Patent: October 7, 1980
    Inventor: Eugene M. Mauk
  • Patent number: 4221434
    Abstract: A roadway breaker plate for a planer apparatus having a drum type planer cutter for removing the top portion of an existing roadway, the breaker plate providing a counteracting shearing force on the top portion of the roadway at a predetermined distance from the planer cutter whereby the top portion of the roadway removed by the planer cutter is removed in the form of cuttings generally of a uniform size.
    Type: Grant
    Filed: March 23, 1978
    Date of Patent: September 9, 1980
    Assignee: CMI Corporation
    Inventors: George W. Swisher, Jr., John F. Phillips
  • Patent number: 4220320
    Abstract: A silver recovery method and apparatus performing highly specific separation of silver from source material containing organic and inorganic materials, including transition metals, comprising the steps of digesting source material with nitric acid solution to form an acidic reaction mixture; thereafter adding increments of sodium or potassium cyanide solution to the separated liquid phase of the reaction mixture; discontinuing addition of cyanide solution when silver(I) cyanide precipitate ceases to form after incremental additions of cyanide solution; and separating silver(I) cyanide precipitate of high purity from the liquid phase of the reaction mixture.
    Type: Grant
    Filed: November 1, 1979
    Date of Patent: September 2, 1980
    Inventor: John E. LeGrange
  • Patent number: D258598
    Type: Grant
    Filed: May 10, 1979
    Date of Patent: March 17, 1981
    Assignee: Orin W. Coburn
    Inventors: Rex M. Maloy, C. David Coburn
  • Patent number: D258887
    Type: Grant
    Filed: August 31, 1978
    Date of Patent: April 14, 1981
    Assignee: CMI Corporation
    Inventors: George W. Swisher, Jr., Thomas L. Steele