Patents by Inventor William R. Daws

William R. Daws 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).

  • Vacuum cleaner
    Patent number: 6361587
    Abstract: A vacuum cleaner assembly comprising a main housing, a primary filter system, and a secondary filter system. The main housing includes an inlet and an outlet. The primary filter system filters the air prior to being exhausted outwardly through the outlet. The secondary filter system is placed in downstream airflow from the primary filter system and provides additional filtering of the air prior to being exhausted to atmosphere.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: March 26, 2002
    Assignee: Rexair, Inc.
    Inventors: Dean Rohn, Steven Ray Selewski, William R. Daws
  • Vacuum cleaner
    Publication number: 20010015132
    Abstract: A vacuum cleaner assembly (10) comprising a main housing (12) having an inlet (14) and an outlet (16). A motor (17a) is disposed within the main housing (12) between the inlet (14) and the outlet (16) for providing motive force to a cooling fan (17b), a blower (17c), and a separator (22). The cooling fan (17b) is mounted within the main housing (12) above the motor (17a) to circulate cooling air around the motor (17a). The blower (17c) is mounted within the main housing (12) below the motor (17a) for drawing air into the inlet (14) and exhausting air outwardly through the outlet (16). The separator (22) is mounted below the blower (17c) for circulating the air and water bath (20) within a water bath pan (36) and provides, in combination with the water bath (20), a primary filter for filtering the air prior to exhausting the air outwardly toward the outlet (16) of the vacuum cleaner to atmosphere.
    Type: Application
    Filed: December 22, 2000
    Publication date: August 23, 2001
    Applicant: REXAIR, INC.
    Inventors: Dean Rohn, Steven Ray Selewski, William R. Daws
  • Vacuum cleaner
    Patent number: 6174350
    Abstract: A vacuum cleaner assembly (10) includes a main housing (12) having an inlet (14) and an outlet (16). A motor (17a) is disposed within the main housing (12) for providing motive force to a cooling fan (17b), a blower (17c), and a separator (22). The separator (22) circulates the air and water bath (20) within a water bath pan (36) and provides, in combination with the water bath (20), a primary filter for filtering the air. A second filter assembly (24) is also provided preferably including a high efficiency filter (100 or 100a), or HEPA rated filter, for filtering microscopic dust and dirt particles that escape the separator (22) and water bath (20) and is disposed after both the water bath (20) and the separator (22) for additional filtering of the air. Alternatively, it may be a non-HEPA rated filter (101).
    Type: Grant
    Filed: April 29, 1999
    Date of Patent: January 16, 2001
    Assignee: Rexair, Inc.
    Inventors: Dean Rohn, Steven Ray Selewski, William R. Daws
  • Air filter housing
    Patent number: D467653
    Type: Grant
    Filed: February 18, 1998
    Date of Patent: December 24, 2002
    Inventors: Robin Scott, William R. Daws, Kazunobu Nakamura
  • Water filter housing
    Patent number: D470912
    Type: Grant
    Filed: August 13, 1999
    Date of Patent: February 25, 2003
    Assignee: Quality Products, Inc.
    Inventors: William R. Daws, Kazunobu Nakamura
  • Water filter housing
    Patent number: D417254
    Type: Grant
    Filed: February 18, 1998
    Date of Patent: November 30, 1999
    Assignee: Quality Products, Inc.
    Inventors: William R. Daws, Kazunobu Nakamura