Patents Examined by M. Mutter
  • IR-reflecting compositions
    Patent number: 8778493
    Abstract: A composition comprising multistage polymeric particles having an average particle diameter from 0.5 to 15 ?m and a Vicker's scale hardness from 100 to 700 Kgf/mm2; and a film-forming polymer having Tg no greater than 80° C. The refractive index difference measured from 400 nm to 800 nm between the polymeric particles and the film-forming polymer is no greater than 0.02 and the average refractive index difference measured from 800 nm to 2500 nm between the polymeric particles and the film-forming polymer is at least 0.04.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: July 15, 2014
    Assignee: Rohm and Haas Company
    Inventors: Edward E. Lafleur, Luu T. Le, Edwin Nungesser
  • Selectable servo ratio and dual speed control system for large centrifuge units
    Patent number: 4224558
    Abstract: A selectable servo ratio and dual speed centrifuge control apparatus utilizing a plurality of phase-lock loops with selected gain increments to provide motor control from coarse to fine in conjunction with an automatic acceleration and deceleration circuit.
    Type: Grant
    Filed: January 10, 1978
    Date of Patent: September 23, 1980
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Wilbur L. Hays
  • Circuit for detecting a positive phase or an opposite phase in three phase alternating power source
    Patent number: 4196378
    Abstract: A circuit for detecting whether, or not, a three-phase load is correctly connected to a three-phase supply employs an inductance, capacitor and resistor connected in the three branches of the load circuit so as to generate a single phase output signal when connected to the supply, to voltage of the signal depending upon the connection to the supply. The circuit requires only three wires and not connected to a ground, or neutral. The output signal controls a reversing switch to ensure that the load is always automatically connected correctly; in a preferred form only one of the voltages is sufficient to light a source of radiant energy to activate a sensor to energize the reversing switch.
    Type: Grant
    Filed: February 6, 1978
    Date of Patent: April 1, 1980
    Assignee: Tae-Weon, Mo
    Inventor: Hiroshi Shirai
  • Drive equipment supplied with direct current
    Patent number: 4019108
    Abstract: Drive equipment supplied with direct current, which includes a DC motor with a series field winding and with a semi-conductor rectifier arrangement in parallel with the field winding and working in pulse operation for variable shunting of the field winding. The controllable semi-conductor rectifier has a reactor connected in series with it. A load object is connected in parallel to the semi-conductor rectifier. The load object may be an accumulator battery series-connected with a second semi-conductor rectifier which blocks the battery voltage.
    Type: Grant
    Filed: January 8, 1976
    Date of Patent: April 19, 1977
    Assignee: ASEA Aktiebolag
    Inventor: Sten Elvin