Patents by Inventor Gregory J. McDougall

Gregory J. McDougall 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).

  • Patent number: 5617601
    Abstract: A toothbrush is disclosed which comprises a rotatably mounted toothbrush head, 100, a connection member, 150, for connection to a linear reciprocal drive means contained in hand-held casing and a flexible member, 160, formed preferably from steel wire or ribbon disposed between the connection member, 150, and the head, 100, and for converting linear reciprocal motion of the connection member to rotational motion of the head.
    Type: Grant
    Filed: October 6, 1994
    Date of Patent: April 8, 1997
    Inventor: Gregory J. McDougall
  • Patent number: 5435032
    Abstract: A toothbrush head consists of a hollow body (16) closed at one side by a flexible membrane (13) formed with cavities (17) to hold bases of tufts of bristles. The cavities form protrusions extending up inside the body (16) which are pushed against by a reciprocating finger (18) to tilt and move the bristles relative to the body (16).
    Type: Grant
    Filed: March 17, 1994
    Date of Patent: July 25, 1995
    Assignee: ISIS International, Inc.
    Inventor: Gregory J. McDougall
  • Patent number: 5392528
    Abstract: An adjustable pulsator for a hair dryer has a rotatable disc 14 with peripheral blades 17. A housing 18 has apertures 26 which are effectively closed by more or the less by protrusions 27 when a ring 19 supporting the protrusions 27 is rotated relative to the housing 18. The more open the apertures, the faster the disc 14 will rotate in use.
    Type: Grant
    Filed: June 14, 1993
    Date of Patent: February 28, 1995
    Assignee: ISIS International Inc.
    Inventor: Gregory J. McDougall
  • Patent number: 5212366
    Abstract: An electrically powered hand held hair curling appliance includes a barrel (2) for delivering warm air to the hair. The barrel (2) is selectively manually adjustable in diameter to allow curls of different diameters to be formed. The barrel (2) includes a number of barrel elements (3), each provided with a plurality of apertures (3d). The elements (3) are manually movable radially outwardly or inwardly to expand or contract the barrel (2), with the elements (3) overlapping one another when contracted, but always allowing unobstructed air flow from the interior of the barrel (3) out through apertures (3d) to the hair.
    Type: Grant
    Filed: January 8, 1992
    Date of Patent: May 18, 1993
    Assignee: China Pacific Trade Ltd.
    Inventor: Gregory J. McDougall
  • Patent number: 5161317
    Abstract: A hair dryer attachment includes a rotor impeller for converting a uniform stream of air from the hair dryer into a pulsating stream of air. A governor is provided on the rotor impeller or reduction gearing is provided between the rotor and the impeller to reduce the speed of rotation so that the pulsations are at a frequency perceptible to the user.
    Type: Grant
    Filed: November 18, 1991
    Date of Patent: November 10, 1992
    Assignee: Asia World Trade Limited
    Inventor: Gregory J. McDougall