Patents by Inventor Raymond E. Pemrick

Raymond E. Pemrick has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Flexible coated abrasive and fabric therefor
    Patent number: 4725487
    Abstract: Flexible coated abrasives with facile straight tear in either the length or cross directions can be made on stitch bonded fabric backings having (1) an aral density between 51 and 153 gm/m.sup.2, (2) a tensile strength in the length direction between 5.4 and 12.6 kN/m of width, (3) a tensile strength in the cross direction which is between 5.4 and 11.7 kN/m of length and is between 0.9 and 1.35 times as great as the length direction tensile strength, (4) an elongation to break in the length direction of not more than 40%, and (5) an elongation to break in the cross direction of not more than 35%. The fabric is prepared for coating by saturation with at least its own weight of a finishing adhesive composed primarily of latices of acrylic homopolymers, acrylic copolymers, butadienestyrene polymers, or mixtures of these types.
    Type: Grant
    Filed: March 28, 1986
    Date of Patent: February 16, 1988
    Assignee: Norton Company
    Inventors: Raymond E. Pemrick, Dhiraj H. Darjee
  • Fine grit abrasive
    Patent number: 4214877
    Abstract: Calendaring of woven polyester fabric at 20 to 60 tons pressure and 200.degree. to 380.degree. F., provides a smooth surface, upon which fine grit abrasive may be applied, to produce flexible coated abrasive articles for polishing applications.
    Type: Grant
    Filed: December 19, 1978
    Date of Patent: July 29, 1980
    Assignee: Norton Company
    Inventor: Raymond E. Pemrick
  • Woven heat-stretched backing members of improved dimensional stability
    Patent number: 4140829
    Abstract: A woven heat stretched fabric of polyester fiber yarns is provided which offers an improved, dimensionally stable backing member for the manufacture of coated abrasive material. Coated abrasive material incorporating this backing member is characterized by suitably controlled elongation characteristics.
    Type: Grant
    Filed: July 8, 1977
    Date of Patent: February 20, 1979
    Assignee: Norton Company
    Inventors: Raymond E. Pemrick, Paul M. Cocanour
  • Coated abrasive backing of dimensionally stabilized heat stretched fabric
    Patent number: 4035961
    Abstract: A woven heat stretched fabric of polyester fiber yarns is provided which offers an improved, dimensionally stable backing member for the manufacture of coated abrasive material. Coated abrasive material incorporating this backing member is characterized by suitably controlled elongation characteristics.
    Type: Grant
    Filed: June 27, 1975
    Date of Patent: July 19, 1977
    Assignee: Norton Company
    Inventors: Raymond E. Pemrick, Paul M. Cocanour