Patents by Inventor Thewis M. Westra

Thewis M. Westra 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: 8191462
    Abstract: A beverage maker includes a boiler for containing and heating water and a normally opened thermostat having a sensing member for sensing a temperature of the water, wherein the sensing member is located at a certain distance with respect to a water inlet of the boiler. When the water is heated, and the temperature of the water exceeds a set point of the thermostat, the thermostat closes. As a result, a pumping action is started, where hot water is forced to flow out of the boiler, and where cold water is forced to flow into the boiler. When a front of the cold water reaches the sensing member of the thermostat, the thermostat is triggered to open again, and the pumping action is terminated. By means of the thermostat, the quantity of hot water that is used for the purpose of making a beverage is accurately controlled.
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: June 5, 2012
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Peng Chau Quah, Thewis M. Westra, Thijs De Haan, Pieter Berend Bosstad, Jean Bart Bleeker
  • Patent number: 8122814
    Abstract: A beverage maker (1) comprises a water tank (20) for containing and supplying water during a beverage making process, and a pump (40) for pumping the water out of the water tank (20). In order to terminate a pumping action at a predetermined point, the beverage maker (1) comprises a switch (64) which is arranged in a pumping circuit (41) for energizing the pump (40), a float (70) which is located in the water tank (20), and a coupling arm (71) attached to the float (70). During a pumping action, when a water level (21) in the water tank (20) is above a predetermined minimum level, the coupling arm (71) couples the float (70) to the switch (64), and the switch (64) is held in a closed position. However, as soon as the water level (21) reaches the minimum level, the coupling of the float (70) to the switch (64) is lost, and the switch (64) switches back to an opened position, as a result of which the pumping action is terminated.
    Type: Grant
    Filed: July 11, 2007
    Date of Patent: February 28, 2012
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Thewis M. Westra, Peng Chau Quah
  • Publication number: 20100162900
    Abstract: A coffee maker (1) has a pad holder (30) for receiving and supporting at least one coffee pad (10), which holder can be connected to a brew chamber top portion (40) of the coffee maker via a bayonet connection. Both the pad holder (30) and the brew chamber top portion (40) are provided with bayonet ridges (50, 60), contacting surfaces (51, 61) of the bayonet ridges (50, 60) comprising at least two portions (52, 53, 62, 63, 64) having an inclined orientation with respect to each other. In establishing a coupling of the pad holder to the brew chamber top portion or detaching such a coupling, the pad holder is rotated with respect to the brew chamber top portion, during which a portion (53) of the contacting surface (51) of the bayonet ridges (50) of the pad holder plays an important role in guiding the pad holder such that a height level of the pad holder with respect to the brew chamber top portion is varied automatically.
    Type: Application
    Filed: August 9, 2007
    Publication date: July 1, 2010
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventor: Thewis M. Westra
  • Publication number: 20090249962
    Abstract: A beverage maker (1) comprises a water tank (20) for containing and supplying water during a beverage making process, and a pump (40) for pumping the water out of the water tank (20). In order to terminate a pumping action at a predetermined point, the beverage maker (1) comprises a switch (64) which is arranged in a pumping circuit (41) for energizing the pump (40), a float (70) which is located in the water tank (20), and a coupling arm (71) attached to the float (70). During a pumping action, when a water level (21) in the water tank (20) is above a predetermined minimum level, the coupling arm (71) couples the float (70) to the switch (64), and the switch (64) is held in a closed position. However, as soon as the water level (21) reaches the minimum level, the coupling of the float (70) to the switch (64) is lost, and the switch (64) switches back to an opened position, as a result of which the pumping action is terminated.
    Type: Application
    Filed: July 11, 2007
    Publication date: October 8, 2009
    Applicant: KONINKLIJKE PHILLIPS ELECTRONICS, N.V.
    Inventors: Thewis M. Westra, Peng Chau Quah
  • Publication number: 20090183639
    Abstract: A beverage maker (1) comprises a boiler (30) for containing and heating water and a normally opened thermostat (63) having a sensing member (63a) for sensing a temperature of the water, wherein the sensing member (63a) is located at a certain distance with respect to a water inlet (34) of the boiler (30). When the water is heated, and the temperature of the water exceeds a set point of the thermostat (63), the thermostat (63) closes. As a result, a pumping action is started, wherein hot water is forced to flow out of the boiler (30), and wherein cold water is forced to flow into the boiler (30). When a front of the cold water reaches the sensing member (63a) of the thermostat (63), the thermostat (63) is triggered to open again, and the pumping action is terminated. By means of the thermostat (63), the quantity of hot water that is used for the purpose of making a beverage is accurately controlled.
    Type: Application
    Filed: June 27, 2007
    Publication date: July 23, 2009
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Peng Chau Quah, Thewis M. Westra, Thijs De Haan, Pieter Berend Bosstad, Jean Bart Bleeker