Patents Represented by Law Firm Parmelee, Johnson, Bollinger & Bramblett
  • Patent number: 4481990
    Abstract: In a tire protection and/or skid protection for vehicle tires the tread of the tire is provided with recesses, which are to receive tire protectors or skid protectors. These protectors are retained in the recesses by means of retaining strands mounted in grooves of the tire tread. The retaining strands are connected to lateral chains or parts of lateral chain networks respectively which come to bear against the side walls of the vehicle tire, there being at least one tensioning device for tensioning the lateral chains or chain networks.
    Type: Grant
    Filed: August 22, 1979
    Date of Patent: November 13, 1984
    Assignee: RUD-Kettenfabrik Rieger & Dietz Gmbh u. Co.
    Inventors: Hansjorg W. Rieger, Erhard A. Weidler
  • Patent number: 4364592
    Abstract: The present invention provides a compact, multi-purpose log handling tool including a log handling hook with an integrally extending shank having an opening defined in its upper end. A loop shaped handle is received through the opening in the shank for mounting the hook to the handle. In the preferred embodiment of the invention, the opening in the shank is generally flat-sided (rectangular, square or oval), and the handle has at least two sections of different cross-sectional area. The shank, and thus also the hook, is slideable between the two sections. The first handle section has a generally circular cross-sectional area and is of smaller dimension than the opening in the shank, and the second handle section has a cross-sectional area and dimension that identically compliments the size and shape of the opening in the shank. When the shank is slid into engagement over the first section of the handle, the hook is pivotal relative to the handle.
    Type: Grant
    Filed: March 20, 1981
    Date of Patent: December 21, 1982
    Inventor: Charles P. Jackson
  • Patent number: 4352382
    Abstract: In a tire protection chain with plate-shaped components (1) which cover the tread of the tire to be protected, and with at least one chain network (4) located on one side of the tire, the chain network is provided with overload safeguards (7, 8, 9, 14, 18, 22) which form a parting position when the chain network is subjected to extremely high loadings. The overload safeguards are here designed in such a way that no parts can be released and thrown off when the chain network is overloaded.
    Type: Grant
    Filed: July 16, 1980
    Date of Patent: October 5, 1982
    Assignee: RUD-Kettenfabrik Rieger & Dietz GmbH u. Co.
    Inventor: Erhard A. Weidler
  • Patent number: 4341122
    Abstract: In a device for simultaneously measuring radial and axial forces with the aid of measuring positions (24, 25, 26, 27) arranged at roller bearings and formed by resistance strain gauges, possibilities for eliminating apparent axial forces, which could falsify the results of the measurements, are shown.
    Type: Grant
    Filed: March 13, 1980
    Date of Patent: July 27, 1982
    Assignee: Gerhard B. Lechler
    Inventors: Gerhard B. Lechler, Otto G. Richter
  • Patent number: 4339828
    Abstract: Communications systems employing frequency modulation have noise threshold levels that practically limit the minimum received signal level. This limit is particularly significant to satellite earth stations. A method that automatically and advantageously trades improved threshold levels for increased distortion by reducing the noise bandwidth of the receiver as the carrier to noise ratio approaches the threshold level is described. This method senses when noise peaks approach, equal or exceed the FM carrier level, converts the rate at which these noise peak events occur into a control voltage whose average magnitude controls the bandwidth of a filter inversely to the noise peak event rate. When this method is applied to FM receivers with threshold extending FM feedback loops, the control voltage also increases the loop feedback factor thereby reducing distortion and better optimizing the distortion-threshold trade-off.
    Type: Grant
    Filed: October 12, 1979
    Date of Patent: July 13, 1982
    Inventor: Norman E. Chasek
  • Patent number: 4332309
    Abstract: In an apparatus for the atomization of metered quantities of oil in a line (2) for supplying compressed air to compressed air units, there are provided a metering piston (10), to which pressure can be admitted via a control line (3), and two valves (18, 19, 20; 24, 25) which, when co-operating with the metering piston (10), prevent both overlubrication and underlubrication of the compressed air unit to be operated.
    Type: Grant
    Filed: August 13, 1980
    Date of Patent: June 1, 1982
    Inventor: Arnold Bereit
  • Patent number: 4330890
    Abstract: In a garment, and in particular especially in a bodice or swimsuit, eyelets (2), especially adjuster slides, are used for joining parts (1) of the garment to a tape or band (9), at least one portion (5) of the eyelets (2) being sewn in each case into a loop of the part of cloth (1) or of the tape or band (9). To increase the stability of the shape of the loop enclosing the eyelets-portion (5), a fixing tab (7) is joined to the portion (5) and sewn into the loop.
    Type: Grant
    Filed: February 21, 1980
    Date of Patent: May 25, 1982
    Inventor: Georg E. H. Weber-Unger
  • Patent number: 4329775
    Abstract: The method of making a force-responsive instrument of the type including a tensioned wire of round cross-section to be vibrated perpendicular to the wire axis, wherein said instrument includes field-producing magnetic means operable with said wire to induce vibration; said method including the steps of:positioning said wire in a magnetic field directed perpendicularly to the wire axis;vibrating said wire by electrical means connected to the wire and arranged to develop interaction with said magnetic field;developing an electrical signal proportionately responsive to the magnitude of vibrations of said wire;effecting relative rotation between said wire axis and said magnetic field while maintaining constant the intensity of said magnetic field;making measurements of the amplitude of the signal developed by said wire;determining from said measurements the position of said wire relative to said magnetic field providing maximum signal amplitude; andfixing said wire in said instrument in said position relative to
    Type: Grant
    Filed: May 3, 1979
    Date of Patent: May 18, 1982
    Assignee: The Foxboro Co.
    Inventors: Everett O. Olsen, James R. LaCroix, Hoel L. Bowditch
  • Patent number: 4330818
    Abstract: A continuously variable voltage direct current power supply having first and second output terminals is provided using a variable transformer with a core of magnetically permeable material encircled by at least one electrical winding, with segments of winding turns being exposed along two spaced traverse paths. First and second electrically conductive brushes are simultaneously movable along these respective paths, with at least one brush at all times contacting an exposed segment. Rectifiers connect the first brush to the first output terminal and the second output terminal to said first brush. Rectifiers connect the second brush to the first output terminal and the second output terminal to said second brush. Rectifiers connect a winding terminal to the first output terminal and the second output terminal to said winding terminal.
    Type: Grant
    Filed: February 19, 1980
    Date of Patent: May 18, 1982
    Inventor: Stanley G. Peschel
  • Patent number: 4328421
    Abstract: A family of two axis horizon sensors using the same basic scan technique is provided which achieves a relatively wide altitude range with a minimum of moving parts for performing vehicle attitude control and guidance. The horizon sensor for indicating the orientation of a space vehicle senses a line of discontinuity in optical radiation between a reference planet and outer space in at least two planes using a single sensor which includes a single detector means for detecting the optical radiation. The detector is scanned across the line of discontinuity in at least two planes. The scanner includes a rotary element driven by a single motor having at least two stationary reflecting elements positioned therearound. A phase reference signal generator is coupled to the motor and driven in synchronism therewith for generating at least two reference signals at predetermined points in the scan.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: May 4, 1982
    Assignee: Barnes Engineering Company
    Inventor: Gerald Falbel
  • Patent number: 4326180
    Abstract: After a circuit is completely configured, including the mounting of semiconducting material onto a conductive layer and the connection of a conductor lead from a dot on the semiconducting material to the circuit, the required backdiode e/i characteristic is obtained by subjecting the whole circuit assembly to etching processing. The entire circuit is immersed into an electrolytic solution for etching away the semiconducting material to form the fragile narrow neck of the backdiode, thereby obtaining the required backdiode characteristic while advantageously obtaining an irreducible minimum of parasitic reactances associated with the resultant backdiode. Subsequent handling of the fragile backdiode as a component has been avoided because it is advantageously fabricated "in situ" pre-joined and integrated with the other components of the desired electronic circuit.
    Type: Grant
    Filed: November 5, 1979
    Date of Patent: April 20, 1982
    Assignee: Microphase Corporation
    Inventor: Romano I. Ferri
  • Patent number: 4323795
    Abstract: A single-chip 8-bit DAC with bipolar current sources, an output buffer amplifier for developing an output voltage, a regulated reference for producing a calibrated output, and operated by a single-voltage supply, e.g. +5 volts. The buffer amplifier includes means providing for driving the output voltage virtually to ground level when the DAC output is zero. The current sources comprise a single-transistor cell driven by an I.sup.2 L flip-flop circuit, and the reference supply is merged with the reference transistor circuit regulating the DAC current levels, both aiding in reducing required chip area. A highly efficient bias network is utilized to supply the high-level bias currents required.
    Type: Grant
    Filed: February 12, 1980
    Date of Patent: April 6, 1982
    Assignee: Analog Devices, Incorporated
    Inventors: Peter R. Holloway, Douglas A. Mercer
  • Patent number: 4321955
    Abstract: A tire protector device with a covering, especially formed by plates, which exhibits at its ends next to the outside of the tire connector parts for fastening a chain net which covers the side wall of the tire. The edge of said chain net remote from the connector parts being connected to a holding strand via connection parts which are formed of tension devices which have at least one tension spring forming a store of tensional force and/or which exhibits each a connector member carried movably on the holding strand.
    Type: Grant
    Filed: October 15, 1979
    Date of Patent: March 30, 1982
    Assignee: RUD-Kettenfabrik Rieger & Dietz GmbH u. Co.
    Inventors: Hansjorg Rieger, Erhard Weidler
  • Patent number: 4322711
    Abstract: A foot pedal operated motor control is provided for controlling the speed of a motor. The entire motor control circuit is mounted in a foot pedal housing which circuit includes a generally disc shaped potentiometer having a rotatable and a stationary member with the movement of the rotatable member with respect to the stationary member determining the resistance of the potentiometer which controls the current to a motor whose speed is to be controlled. The disc shaped potentiometer has an opening therethrough. A foot pedal is pivotally mounted on the housing overlying the potentiometer and a helical member extends between the foot pedal on one end thereof and into the opening of the disc shaped potentiometer on the other end thereof.
    Type: Grant
    Filed: December 19, 1980
    Date of Patent: March 30, 1982
    Assignee: Blackstone Industries, Inc.
    Inventors: Paul C. Spangler, Searle T. Spangler
  • Patent number: 4321741
    Abstract: A method for protecting the feed tube of a food processor is described in which an outer sleeve associated with a movable food pusher and carrying an actuator enables operation of the food processor only when this outer sleeve is properly positioned over the feed tube. When the cover is properly positioned on the bowl and the outer sleeve is mounted over the feed tube with the food pusher being positioned and manually movable within the passageway in the feed tube, the actuator means carried by the sleeve is operatively associated in enabling relationship with control means in the housing to permit operation of the motor drive for the food processor. Thus, inadvertent insertion of a hand or a foreign object through the feed tube into the bowl is prevented when the rotatable tool is being driven by the motor drive.
    Type: Grant
    Filed: February 11, 1980
    Date of Patent: March 30, 1982
    Assignee: Wilson Research & Development, Inc.
    Inventor: James E. Williams
  • Patent number: 4320620
    Abstract: In an arrangement for fastening a structural part (1) to a round steel chain by means of two webs (3,6) which overlap the long sides (19,20) of a chain link (9) and bridge the gap between said long sides (19,20) a centering member (5) is used which centering member is provided with a bore (12) and parallel side faces (10,11) having a spacing from one another which is approximately equal to the width of the gap between the long sides (19,20) of the chain link (9) partially overlapped by the webs (3,6). At least one web (3) being provided with a guide (4) which holds the centering member (5) in a prescribed position.
    Type: Grant
    Filed: June 3, 1980
    Date of Patent: March 23, 1982
    Assignee: RUD-Kettenfabrik Rieger & Dietz GmbH u. Co.
    Inventors: Werner Rieger, Horst Elsasser, Hartwig Zenker, Alfred Bittlingmaier, Hans H. Dalferth
  • Patent number: 4320827
    Abstract: For fixing conveyor elements (7) to the chain strands (5, 6) in a chain conveyor having two chain strands (5, 6) running over sprockets (1, 3), pairs of projections (11, 12) are used which grip one chain link (10) in each case and which, on assembly or dismantling of the conveyor elements (7), can move relative to one another on the tensioned chain strands (5, 6) but are locked by fixing bolts (18) when in the operating position and which have an arcuate outline on the sides facing the fronts (8, 9) of the particular chain link (10) gripped.
    Type: Grant
    Filed: June 13, 1980
    Date of Patent: March 23, 1982
    Inventors: Alfred Puppel, Hans H. Dalferth
  • Patent number: 4320400
    Abstract: A method and apparatus is described that processes, samples and sorts, for subsequent analysis, very large numbers of randomly arriving pulsed and continuous wave radio and radar signals, while providing essentially 100% probability of intercepting all signals present at any moment. Such characteristics as angle of arrival, signal strength and frequency can be determined from the processed received signal samples. The method uses a rapidly swept frequency window, of specified width and shape, which separates into varying time positions, RF samples of each received signal, said time positions varying as a function of signal frequency. These time varying samples are then processed and separated into three video pulse outputs for frequency, signal strength and angle of arrival determining computations, respectively.
    Type: Grant
    Filed: October 12, 1979
    Date of Patent: March 16, 1982
    Inventor: Norman E. Chasek
  • Patent number: 4319475
    Abstract: A center-spine mounted tandem cantilevered rolling mill includes three or more pairs of upper and lower spindles. An elongated rigid center spine extends horizontally midway between the upper and lower spindles. The upper spindles are removably mounted above this center spine by upper front and rear bearings, with their axes extending parallel and oriented perpendicular to the length of the spine. The front ends of the upper spindles project forward centilevered beyond the spine for carrying the upper work rolls. The lower spindles are removably mounted below this center spine by lower front and rear bearings in alignment with the respective upper spindles. The front ends of the lower spindles project forward cantilevered beyond the spine for carrying the lower work rolls. Each pair of upper and lower work rolls is called a "stand".
    Type: Grant
    Filed: June 13, 1980
    Date of Patent: March 16, 1982
    Inventor: Allan Stikeleather
  • Patent number: 4319489
    Abstract: An ultrasonic diagnostic method and apparatus are provided for probing the condition in a tissue of a living body by projecting an ultrasonic beam onto the living body from a vibrator array transducer probe consisting of a plurality of tiny ultrasonic vibrators. The apparatus executes two scanning actions, of which one is a normal linear scanning that drives the ultrasonic vibrators sequentially in the manner to cause a sequential parallel shift of the ultrasonic beam substantially perpendicular to the vibrator array, and the other of which is an inclined linear scanning that drives the ultrasonic vibrators at individually different timings while sequentially shifting the driven vibrators in the manner to cause sequential parallel shift of the ultrasonic beam having an angle of inclination against the vibrator array. The images obtained through the normal linear scanning and the inclined linear scanning are combined to form a composite high-resolution image.
    Type: Grant
    Filed: March 28, 1980
    Date of Patent: March 16, 1982
    Assignee: Yokogawa Electric Works, Ltd.
    Inventors: Keiki Yamaguchi, Yasuhito Takeuchi, Toru Shimazaki, Naoki Seki