Patents Represented by Law Firm Roberts & Floyd
  • Patent number: 4758721
    Abstract: A magnetic mass spectrometer used to purify ions in a polyisotopic mixture wherein non-ionized particles which exit the ion source are collected in the vacuum chamber and are then introduced into a thermal cycle pump and returned to the ion source to increase the yield. This purifier will both separate a desired isotope, such as iodine-123, from the polyisotopic mixture produced by a conventional small cyclotron, and increase the recovery rate, thus making feasible its use in nuclear medicine.
    Type: Grant
    Filed: December 29, 1986
    Date of Patent: July 19, 1988
    Assignee: Isotope Purifiers Ltd.
    Inventor: David A. Hill
  • Patent number: 4745897
    Abstract: A system to avoid theft of vehicles equipped with internal combustion engines by automatically blocking the fuel flow. This automatic blocking exists every time the engine is turned off or optionally, when any vehicle door is opened while the engine is running.
    Type: Grant
    Filed: December 22, 1986
    Date of Patent: May 24, 1988
    Inventor: Jose O. V. Tejeda
  • Patent number: 4737638
    Abstract: An apparatus for recycling non-collimated particles to the ionizer chamber of a beam forming subsystem of a magnetic mass spectrometer which includes a cryogenically cooled moving element forming a portion of the wall of the ion separation chamber between the pole tips of the magnet.
    Type: Grant
    Filed: December 29, 1986
    Date of Patent: April 12, 1988
    Assignee: Isotope Purifiers Ltd.
    Inventor: David A. Hill
  • Patent number: 4708195
    Abstract: The cooling system of automotive and other engines are permanently sealed by a cooling system sealant which will seal both small leaks caused by corrosion and large leaks caused by warped heads and blown head gaskets. The cooling system sealant comprises a major part of sodium silicate and minor parts of blue vitroil and gum of arabic. The cooling system sealant is added to the engine while running and with the coolant warmed.
    Type: Grant
    Filed: September 19, 1986
    Date of Patent: November 24, 1987
    Inventor: Robert W. Barks
  • Patent number: 4704754
    Abstract: A structural system for use in bridges, buildings and other structures. The system supports part of its load by tension action and part of its load by arch action. Cables are stretched and anchored between end supports. Lateral compressive elements are placed over the cables and fit over grooves across the bottoms of the elements. The grooves vary in depth. The cables are near the bottom of the elements at the center span and near the top of the elements at the end supports.
    Type: Grant
    Filed: February 20, 1987
    Date of Patent: November 10, 1987
    Inventor: Samuel G. Bonasso
  • Patent number: 4682592
    Abstract: A male contraceptive which is effective, reversible and non-surgically implanted, which prevents the transport of sperm by occluding the lumen of the vas deferens, the ejaculatory duct, or the urethra. The male contraceptive is inserted and removed through the urethra. The contraceptive comprises an elongated hollow tube having an expandable elastic cap forming a fluid tight seal at one end and a plug forming a fluid tight seal at the other end. A flexible spring is provided within the tube. The plug includes a valve for allowing the selective ingress and egress of the fluid.
    Type: Grant
    Filed: January 28, 1985
    Date of Patent: July 28, 1987
    Inventor: Knute E. Thorsgard
  • Patent number: 4659897
    Abstract: A method of making a watchcase, in which two projections are formed on a joining surface of a part of the watchcase, such as a band connecting lug. The part is joined to another part such as a case body by projection welding to make the watchcase.
    Type: Grant
    Filed: January 28, 1986
    Date of Patent: April 21, 1987
    Assignee: Citizen Watch Co., Ltd.
    Inventor: Tsuneji Takasugi
  • Patent number: 4644978
    Abstract: A structural system for use in bridges, buildings and other structures. The system supports part of its load by tension action and part of its load by arch action. Cables are stretched and anchored between end supports. Lateral compressive elements are placed over the cables and fit over grooves across the bottoms of the elements. The gooves vary in depth. The cables are near the bottom of the elements at the center span and near the top of the elements at the end supports.
    Type: Grant
    Filed: October 3, 1985
    Date of Patent: February 24, 1987
    Inventor: Samuel G. Bonasso
  • Patent number: 4644932
    Abstract: Method and device for manufacturing of asphalt bulk masses where a substantial part of the heat energy of the furnace gases from the drying and mixing process is transferred to the bulk mass fractions before those are supplied to the drying and mixing process and where the furnace gases by this process at the same time are cleaned for pollutions. Bulk masses are directed downwards between two parallelly arranged inclined planes (1, 5) where the lower inclined plane (1) comprising horizontally arranged downwards directed ribs (2) directing the furnace gases to the lower side of the bulk masses and where the second inclined plane (5) comprising vertically arranged ribs (4) suctioning the cleaned furnace gases up from the bulk masses after a substantial part of the heat energy being transferred to the bulk masses. At the lower and upper ends of the inclined planes accumulations of the bulk masses (7, 11) are maintained for preventing air from the atmosphere to penetrate into the system.
    Type: Grant
    Filed: March 5, 1984
    Date of Patent: February 24, 1987
    Assignee: Ameco A/S
    Inventor: Ivar Lund
  • Patent number: 4566066
    Abstract: This discloses a system operating on a general purpose digital computer which produces securities portfolio valuation schedules for multiple simultaneous users. The computer maintains securities information in system-wide files which are updated, both electronically and manually, on a daily basis. The system permits each user to store information about his portfolios, as well as information about supplemental securities not contained in the system-wide files.
    Type: Grant
    Filed: June 4, 1982
    Date of Patent: January 21, 1986
    Inventor: Frederic C. Towers
  • Patent number: 4556350
    Abstract: This specification describes a new anchor or rock nut which is used in association with an anchor bolt to rupture packages of two or more component setting mixtures. The nut is characterized by having a plug of thermosetting resinous material formed in situ which plug may be removed by the anchor bolt when screwed into the nut under the application of a pre-determined force which cause the plug to crumble; however until the predetermined force is reached the nut will cause the bolt to rotate.
    Type: Grant
    Filed: May 7, 1982
    Date of Patent: December 3, 1985
    Inventors: Frederick W. Bernhardt, John E. Schott
  • Patent number: 4477060
    Abstract: An underwater cutting tool for steel, concrete, or the like, comprising a tubular oxygen lance (10) adapted to be connected to an oxygen source (24, 25) and having a pistol grip-like handle (16).Prior to its first use the lance is sealed so as to be ignited safely under water. This seal (12) is adapted to be blasted off or fused by means of an igniter unit (14) which is operable under water, at the same time, firing the oxygen flowing out of the lance (10). The seal (12) preferably is formed by a plug of a material which is easily inflammable or contains such material and hermetically seals the free end of the lance (10).
    Type: Grant
    Filed: June 13, 1983
    Date of Patent: October 16, 1984
    Inventor: Lars A. Molinder
  • Patent number: 4475503
    Abstract: An engine idling speed control system for an internal combustion engine comprising an actuator for actuating a throttle valve for increasing and decreasing the idling speed, an engine speed signal generating circuit, an engine speed increasing signal generating circuit and an engine speed decreasing signal generating circuit, a vehicle speed detecting circuit for generating a signal when the vehicle speed is lower than a predetermined value, an idling signal generating circuit for generating an idling signal in the idling operation of the engine, an engine speed detecting circuit for producing a signal when the engine speed is higher than a predetermined value, and an actuator control circuit for operating the actuator in opposite directions in accordance with engine speed increasing and decreasing signals.
    Type: Grant
    Filed: December 17, 1981
    Date of Patent: October 9, 1984
    Assignee: Fuji Jukogyo Kabushiki Kaisha
    Inventors: Hiroyuki Nakamura, Yoshiaki Kasai, Masaaki Ohgami
  • Patent number: 4471642
    Abstract: A rod, bar or section mill has a train of rolling mill stands, each of which is attached to a bed plate with which the stand is introduced into, and withdrawn from, the mill. The bed plate carries pedestals on which are secured guides; those guides can be properly located on the bed plate prior to entry of the stand into the mill; on the stand being positioned in the mill, the guides are then automatically located relative to the pass-line and the down-time of the mill on stand replacement is reduced.
    Type: Grant
    Filed: January 26, 1982
    Date of Patent: September 18, 1984
    Assignee: Hille Engineering Company Limited
    Inventor: Alexander I. Wilson
  • Patent number: 4464803
    Abstract: A structural system for use in bridges, buildings and other structures. The system supports part of its load by tension action and part of its load by arch action. Cables are stretched and anchored between end supports. Lateral compressive elements are placed over the cables and fit over grooves across the bottoms of the elements. The grooves vary in depth. The cables are near the bottom of the elements at the center span and near the top of the elements at the end supports.
    Type: Grant
    Filed: April 28, 1982
    Date of Patent: August 14, 1984
    Inventor: Samuel G. Bonasso
  • Patent number: 4464423
    Abstract: A dual gloss coating is formed on a substrate by first applying to the substrate a continuous layer of curable polyurethane or PVC plastisol or organosol. After the layer is at least partially cured, a second discontinuous layer of the same or different urethane or PVC plastisol or organosol is applied to selected areas of the surface of the first layer by rotogravure printing, using a rotogravure cylinder having a number of lines per inch sufficient to produce a difference in gloss effect between the discontinuous layer and the continuous layer after complete curing of the layers, and then completing the cure of the layers.
    Type: Grant
    Filed: March 27, 1981
    Date of Patent: August 7, 1984
    Assignee: Tarkett AB
    Inventors: Michael H. LaBianca, Thomas G. Smith