Patents by Inventor Raveendran Vaidhyanathan

Raveendran Vaidhyanathan 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).

  • Publication number: 20070283509
    Abstract: A method of operating a fabric treatment appliance comprises a steam generation step and, after the completion of the steam generation step, a draining step comprising draining liquid remaining in a chamber of the steam generator to a tub of the fabric treatment appliance. The steam generator in one embodiment can comprise the chamber, an inlet configured to introduce liquid into the chamber, an outlet configured to exhaust steam from the chamber, and a drain coupling the chamber to the tub and configured to drain liquid from the chamber to the tub.
    Type: Application
    Filed: June 9, 2006
    Publication date: December 13, 2007
    Inventors: Nyik Siong Wong, Raveendran Vaidhyanathan, Anthony H. Hardaway, Joel A. Luckman
  • Publication number: 20070283505
    Abstract: A method of operating a fabric treatment appliance comprises a steam generation step and a steam generator cleaning step. In the steam generator cleaning step, a chamber of the steam generator can be flushed by introducing a volume of liquid into the chamber greater than the internal volume. The steam generator cleaning step can also involve thermally shocking scale formed within the chamber.
    Type: Application
    Filed: June 9, 2006
    Publication date: December 13, 2007
    Inventors: Nyik Siong Wong, Raveendran Vaidhyanathan, Anthony H. Hardaway, Joel A. Luckman
  • Publication number: 20070044520
    Abstract: An automatic washer for washing garments comprises a wash basket with an open top defining a wash chamber, and a clothes mover mounted in the washer for reciprocal movement about an axis of rotation within the wash chamber. The clothes mover comprises an apron, and at least one vane extending from the apron and defining a working surface having an upper edge and a lower edge, the upper edge and the lower edge extending from an outer end to an inner end. At least one line lying along the working surface and extending between the outer end and the inner end defines a constant angle of attack relative to the direction of movement of the clothes mover. The working surface is configured to move the garments along the working surface at a substantially instantaneously uniform speed. The configurations of the upper surface and the working surface are optimized to move the garments between the perimeter and the axis of rotation while minimizing force acting on the working surface.
    Type: Application
    Filed: August 23, 2005
    Publication date: March 1, 2007
    Inventors: Viktor Kopyrin, Raveendran Vaidhyanathan, Flavio Bernardino, Robert Pinkowski
  • Patent number: 7107798
    Abstract: A drive mechanism for a vertical axis automatic washer. The washer has a rotatable wash basket, a rotatable agitator concentrically mounted in the wash basket and a drive motor. The drive mechanism includes a first drive shaft driven by the motor at a first rotational speed and with a first torque. A second drive shaft is arranged to rotatingly drive the agitator. A mechanism is arranged between the first drive shaft and the second drive shaft to convert the first rotational speed and the first torque to a second rotational speed and a second torque at the second drive shaft. A first clutch is arranged between the wash basket and the first drive shaft to allow for selective engagement and disengagement between the wash basket and the first drive shaft. A second clutch is arranged between the wash basket and the second drive shaft to allow for selective engagement and disengagement between the wash basket and the second drive shaft.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: September 19, 2006
    Assignee: Whirlpool Corporation
    Inventors: Raveendran Vaidhyanathan, Matthew C. Parsons
  • Publication number: 20050284197
    Abstract: An agitator assembly for an automatic washing machine comprises an agitator and an auger mounted to the agitator. The auger comprises a tubular body defining a peripheral surface and having a central longitudinal axis. A vane spirals around the tubular body and extends from the peripheral surface from a root having a thickness T to a tip. The vane has a width W measured from the peripheral surface along a line perpendicular to the central longitudinal axis to the tip. The vane is formed by a plurality of ledges, with adjacent ledges joined by steps. With this configuration, the vane can have a relatively small root thickness T and a relatively large width W.
    Type: Application
    Filed: May 20, 2005
    Publication date: December 29, 2005
    Inventors: Robert Pinkowski, Viktor Kopyrin, James Visin, Raveendran Vaidhyanathan, Edward Hynek
  • Publication number: 20050284196
    Abstract: A clothes mover in a washing machine comprises a body mounted for reciprocal rotational movement about a generally vertical axis and at least one vane, which comprises a base mounted to the body and a tail extending from the base and having an upper edge that transitions into a tip. The tail can be free of the body for side-to-side flexing and can be configured such that a portion of the tail extending between the upper edge and the tip can flex from a generally vertical position toward the body. The body can be made of a first material, and the vane can be made of a second material different from the first material.
    Type: Application
    Filed: May 20, 2005
    Publication date: December 29, 2005
    Inventors: Viktor Kopyrin, Robert Pinkowski, J. Visin, Raveendran Vaidhyanathan
  • Patent number: 6845536
    Abstract: Methods and system consistent with the present invention provide an appliance having inlet valves connected to respective supply lines with a control system that senses a temperature of a fluid supplied by a first of the supply lines, associates the first inlet valve connected to the first supply line with one of a plurality of predetermined temperature ranges, one of which includes the sensed temperature of the fluid in first supply line, and activates the first inlet valve upon a request by the appliance for a fluid in the one predetermined temperature range.
    Type: Grant
    Filed: February 20, 2002
    Date of Patent: January 25, 2005
    Assignee: Whirlpool Corporation
    Inventors: Raveendran Vaidhyanathan, Robert R. Williams, Michael A. Dirlam, George Angelov, Edward L. Thies
  • Publication number: 20050011233
    Abstract: A drive mechanism for a vertical axis automatic washer. The washer has a rotatable wash basket, a rotatable agitator concentrically mounted in the wash basket and a drive motor. The drive mechanism includes a first drive shaft driven by the motor at a first rotational speed and with a first torque. A second drive shaft is arranged to rotatingly drive the agitator. A mechanism is arranged between the first drive shaft and the second drive shaft to convert the first rotational speed and the first torque to a second rotational speed and a second torque at the second drive shaft. A first clutch is arranged between the wash basket and the first drive shaft to allow for selective engagement and disengagement between the wash basket and the first drive shaft. A second clutch is arranged between the wash basket and the second drive shaft to allow for selective engagement and disengagement between the wash basket and the second drive shaft.
    Type: Application
    Filed: August 27, 2002
    Publication date: January 20, 2005
    Inventors: Raveendran Vaidhyanathan, Matthew Parsons