Patents Represented by Law Firm Witherspoon & Hargest
  • Patent number: 5090080
    Abstract: The invention relates to a handle for receiving brushes or pencil brushes, especially interproximal tooth brushes, having a shaft portion and a brush or pencil brush portion. According to the invention the handle includes two elongated handle portions connected to each other through a folding joint provided between first ends thereof. Furthermore, a through-hole is provided in the folding joint for the insertion of the shaft portion of the brush or pencil brush therethrough. Gripping members are provided in connection with the hole for gripping the shaft portion, the handle portions are foldable towards each other about the folding joint and guide and/or locking members are provided for guiding the handle portions towards their correct mutual position in the folded condition and/or for locking the handle portions to each other in the folded condition.
    Type: Grant
    Filed: July 20, 1990
    Date of Patent: February 25, 1992
    Inventors: Lars-Erik Thuresson, Per-Gunnar Thuresson
  • Patent number: 5078548
    Abstract: The invention relates to a method for removing and transferring refuse from serving trays which on conveyor belts are carried past different stations for removing dirty dishes, removing refuse and washing the trays. According to the invention a vacuum is produced in a suction nozzle provided immediately adjacent the path along which the trays are conveyed, and the refuse is transferred through a transfer duct which is connected to the nozzle and through which the vacuum is produced at the nozzle. The invention also relates to an installation for performing the method.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: January 7, 1992
    Assignee: AB Centralsug
    Inventors: Hans Hyden, Yngve Forsberg
  • Patent number: 5077116
    Abstract: This invention is directed to an improved forming fabric for papermaking machines having a transverse nonwoven sheet contact layer adhered to a base fabric layer, the fluid flow passageways between adjacent structural members in the nonwoven sheet contact layer being smaller than the fluid flow passageways in the adjacent base fabric layer and in fluid communication with the nonwoven sheet contact surface or the nonwoven surface adjacent to the base fabric or both. The sheet contact layer may be comprised of fibers, filaments, monofilaments, open cell foam or the like.
    Type: Grant
    Filed: November 9, 1990
    Date of Patent: December 31, 1991
    Inventor: Leonard R. Lefkowitz
  • Patent number: 5075050
    Abstract: A method for a supervising and/or controlling of discharged volume or weight of plastic mass flow for e.g. extrusion, injection moulding or blow moulding in a system including a plastification section, which feeds the plastic melt to a volumetric discharge device. This discharge device discharges in turn the molten material continuously or in portions to a forming tool. The pressure and temperature of the plastic melt is determined in connection with the discharge device and the density of the plastic material is calculated by means of these measured values.
    Type: Grant
    Filed: January 29, 1990
    Date of Patent: December 24, 1991
    Inventor: Bo Nilsson
  • Patent number: 5063721
    Abstract: Bracket destined to be mounted on a wall to extend therefrom and so designed that a separately manufactured material in the form of sheets, such as a glass wool mat, is suspended on the bracket by pressing the material against the bracket and causing the material to be pierced by the bracket. The bracket is made out of bent wire (121, 122).
    Type: Grant
    Filed: February 26, 1990
    Date of Patent: November 12, 1991
    Inventor: John A. Larsson
  • Patent number: 5058832
    Abstract: A trigger mechanism for an aerial device including a unitary housing having three longitudinal bores extending therethrough and a spring biased rod or wire-like mechanism which includes a plurality of bends forming various portions which can be inserted into such bores after such rod has been bent and a spring has been attached to such rod.
    Type: Grant
    Filed: February 7, 1991
    Date of Patent: October 22, 1991
    Inventors: Kevin J. Buckman, Thomas P. Buckman
  • Patent number: 5058348
    Abstract: The invention relates to a method for forming a screed guide for a vibrating screed or the like in connection with the casting and direct smoothing of especially single-course structural floors and at the locations where the walls of the next story are to be cast.
    Type: Grant
    Filed: November 21, 1989
    Date of Patent: October 22, 1991
    Inventor: Pell Sune Westhed
  • Patent number: 5056269
    Abstract: An apparatus (1) for work inside piping comprising an elongate clamping and/or moving unit (2) with a working attachment (8) at one end. The unit (2) is provided with two arrays of radially projectable feet (6, 7), suitably at either end thereof. The working attachment (8) includes radially projectable elements (22), all of which are adapted for being displaced to the same extent, and one array of feet (6) placed at the end of the unit (2) opposite the working attachment being adapted such that its feet are thrust out to the same extent. The unit (2) suitably comprises two parts (4, 5) which are mutually, reciprocally movable, there being an array of feet (6, 7) arranged in each part (4, 5).
    Type: Grant
    Filed: December 13, 1989
    Date of Patent: October 15, 1991
    Inventor: Stig Westman
  • Patent number: 5052345
    Abstract: A heating apparatus including a burner and a heat exchanger wherein the burner supplies a primary fluid and exhaust gas to the heat exchanger. Secondary fluid supplied to the heat exchanger is first heated within the heat exchanger by the primary fluid and then is further heated within the heat exchanger by the exhaust gas.
    Type: Grant
    Filed: August 2, 1990
    Date of Patent: October 1, 1991
    Assignee: Kurt Bystrom
    Inventors: Kurt Bystrom, Lars E. Johansson
  • Patent number: 5045002
    Abstract: The present invention relates briefly to a jet propulsion assembly for ships, the assembly including a propeller pump of an axial or a semiaxial type. The propeller pump has a pump housing (6), the inlet of which is connected to a water inlet channel and the outlet of which is connected to an outlet device. In the water flow channel through the pump housing a pump wheel (11) is rotably journalled in a stationary casing (8). A drive shaft (12) of the pump wheel (11) extends from a drive unit through the water inlet channel to the pump wheel (11). The pump wheel (11) and the drive shaft (12) are connected by a flexible coupling (13) which is essentially torsional resistant but permits angular deviations between the drive shaft (12) and the rotational shaft of the pump wheel (11).
    Type: Grant
    Filed: November 16, 1989
    Date of Patent: September 3, 1991
    Assignee: MJP Marine Jet Power AB
    Inventors: Gerard Torneman, Nils E. Lundberg
  • Patent number: 5045008
    Abstract: A fluorescent lamp including a lamp bulb which has been coated with phosphor powder which has been ground in an attritor to reduce the powder weight without loss in light output and light maintenance. A process to produce such a fluorescent lamp is also provided.
    Type: Grant
    Filed: December 22, 1989
    Date of Patent: September 3, 1991
    Assignee: GTE Products Corporation
    Inventor: Costas C. Lagos
  • Patent number: 5030184
    Abstract: An eccentric gear comprising a stationary gear wheel (2) and an eccentric gear wheel (9). The eccentric wheel is freely mounted on the input shaft and is driven round by eccentric means (4, 6) causing the eccentric wheel to roll round the internal teeth on the stationary wheel. A driving dog transmits the slow rotation of the eccentric wheel to an output shaft (14). Distinguishing for the invention is that the teeth are corrected such that the eccentric wheel is adjusted with the aid of the two eccentric means such that there is practically no backlash. A computer calculated least clearance between respective top lands on the teeth is obtained with respect to tooth meshing. The eccentric means comprises two cylindrical sleeves arranged eccentrically one in the other. At one end part of each of the sleeves, one of which is arranged eccentrically in the other, there is a radially outstanding tongue (5, 7).
    Type: Grant
    Filed: July 21, 1989
    Date of Patent: July 9, 1991
    Inventor: Gustav Rennerfelt
  • Patent number: 5025563
    Abstract: Angle transducer unit of the multiturn measuring type for absolute measurement of the angular position of a rotatable shaft. A first transducer (10) of the absolute angular measurement type with a drive shaft (3) is non-rotatably mounted on the rotatable shaft. A second angle transducer (11) of the absolute angular measurement type has a driven shaft (4). There are gear wheels (1,2) mounted on the drive and driven shafts, these gear wheels being mutually in mesh to form a gear for up or down gearing of the rotational rate of the drive shaft. The two angle transducers, e.g. resolvers, are intended for being conventionally connected to an apparatus for measuring the differential angular position of the shafts. Novel to the angle transducer unit is that the gear wheels include an internally toothed gear wheel (2) and an externally toothed gear wheel (1).
    Type: Grant
    Filed: September 29, 1989
    Date of Patent: June 25, 1991
    Inventor: Gustav Rennerfelt
  • Patent number: 5022405
    Abstract: A stethoscope for use with nuclear magnetic resonance (NMR) screenings in order to supervise a patient, including a bell chest piece adapted to pick up audible heart and breathing sounds or other bodily sounds from the patient, a flexible hollow tube connected at one end thereof to the bell chest piece and adapted to transmit audible heart and breathing sounds from the bell chest piece.
    Type: Grant
    Filed: May 20, 1988
    Date of Patent: June 11, 1991
    Assignee: Hok Instrument AB
    Inventors: J. Bertil W. Hok, Valerie Bythell
  • Patent number: 5022880
    Abstract: A method is provided for constructing an electric lamp such as, for example, a tungsten halogen capsule, using carbon monoxide as a reducing gas to remove oxides from lamp components during the manufacture thereof. To this end, prior to evacuation the lamp envelope is filled with a forming gas such as, for example, a carbon monoxide- nitrogen mixture, and the envelope is given one or more light-ups to thereby deoxidize the lamp components.
    Type: Grant
    Filed: January 29, 1990
    Date of Patent: June 11, 1991
    Assignee: GTE Products Corporation
    Inventor: John W. Shaffer
  • Patent number: D318124
    Type: Grant
    Filed: July 19, 1990
    Date of Patent: July 9, 1991
    Inventor: Bernhard A. Siemsen
  • Patent number: D318958
    Type: Grant
    Filed: June 1, 1987
    Date of Patent: August 13, 1991
    Assignee: RFSU:S Forsaljningsorganisation AB
    Inventors: Tom Ahlstrom, Hans Ehrich
  • Patent number: D319736
    Type: Grant
    Filed: July 13, 1988
    Date of Patent: September 10, 1991
    Inventors: Lars-Erik Thuresson, Per-Gunnar Thuresson
  • Patent number: D321459
    Type: Grant
    Filed: September 27, 1990
    Date of Patent: November 12, 1991
    Inventor: James W. Myrland
  • Patent number: D321775
    Type: Grant
    Filed: November 3, 1988
    Date of Patent: November 26, 1991
    Inventor: Timothy J. Barcanic