Patents Examined by Michael Gellner
  • Patent number: 6140910
    Abstract: A resistor has a resistor body of polycrystalline silicon and electric terminals arranged on and/or in the resistor body. A resistor portion is thus formed between the terminals, which gives the resistor its resistance. The material in the resistor body is doped with for example boron. In order to block unsaturated silicon bonds in grain boundaries to a sufficient extent and thereby give the resistor a good long-time stability, fluorine atoms are added to the material. They are added in such a high concentration that all of the otherwise unsaturated bonds are coupled to fluorine atoms. Further, it is provided in the manufacture of the resistor that the concentration is maintained at the originally high value. When ion implanting dopants and fluorine atoms it can be accomplished by performing an annealing after implanting dopants at a high temperature and then a further annealing operation at a low temperature after the subsequent implantation of fluorine.
    Type: Grant
    Filed: June 17, 1997
    Date of Patent: October 31, 2000
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: Ulf Smith, Matts Rydberg
  • Patent number: 5627614
    Abstract: A method is disclosed whereby film images designed to produce a high-impact effect upon the members of an audience viewing a motion picture film are composited with other images designed to provide the conventional cinematic effect upon such audience members. "High-impact" film images photographed at forty-eight frames per second are composited with "conventional" images photographed at the traditional motion picture rate of twenty-four frames per second, with such images superimposed onto the same film frame. Certain portions of the motion picture image seen by the audience deliver a greater illusion of reality than other portions of the same motion picture image. In addition, the method described can accommodate the intercutting of discrete scenes presenting either high-impact or conventional cinema experience. The method disclosed here also allows easy conversion of films to the conventional twenty-four frames per second rate associated with conventional motion picture release and distribution.
    Type: Grant
    Filed: August 25, 1995
    Date of Patent: May 6, 1997
    Inventor: Robert C. Weisgerber
  • Patent number: 5343793
    Abstract: An automatically tuned musical instrument provides a means for keeping strings under tension in proper tune. It also provides a mechanism to simplify installing new strings on the instrument. The tuning system includes a magnitude comparator to eliminate crosstalk which can result in improperly tuning one string when receiving a tone from an adjacent string. The system tensions a string or a plurality of strings at fast speed to within a whole tone or their desired frequency and then fine tunes the strings to desired frequencies. The mechanism includes a guide canal for each string to guide the string into pinch rollers and a flexible conduit to guide the string onto a guide reel to provide an easy, sure way to install strings onto the instrument.
    Type: Grant
    Filed: October 6, 1992
    Date of Patent: September 6, 1994
    Inventor: Michael Pattie
  • Patent number: 5299484
    Abstract: A bearing structure in a piano action part which can always maintain the torque of rotation of a pin shaft supporting a hammer member within a predetermined range characterized in that the bearing structure comprises a pin shaft fixed to a hammer member, a support member having through-holes through which the pin shaft passes and cloth members with which the spaces between the through-holes and the pin shaft inserted through the through-hole are packed, and that the support member is made of a cellulose derivative resin composition containing silica having a number of silanol groups of 3.0 or less per 100 square .ANG. and a BET specific surface area of 100 to 210 m.sup.2 /g, and a transmission structure in a piano characterized in that the transmission structure comprises a hammer member and the above-mentioned bearing structure.
    Type: Grant
    Filed: March 12, 1993
    Date of Patent: April 5, 1994
    Assignee: Kawai Musical Instrument Manufacturing Co., Ltd.
    Inventors: Muneo Ishida, Mituo Yamashita, Masanari Onishi, Masahiro Tanaka