Patents by Inventor William H. Schmid

William H. Schmid 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).

  • Filter assembly for a vacuum cleaner
    Patent number: 6565637
    Abstract: A filter assembly for a vacuum cleaner that includes a main housing having an inlet and an outlet. A motor moves air from the inlet to the outlet, and a first filter is arranged between the inlet and the outlet for filtering the air. An inner wall and an outer wall that is spaced apart from the inner wall form a cavity between the walls. The cavity is located between the first filter and the outlet. The inner wall has an inner opening that permits air to flow from the first filter into the cavity, and the outer wall has an outer opening. A back cover is removably secured to the outer wall over the outer opening to seal the cavity and guide the air from the cavity to the outlet. The back cover includes an access opening that is removably secured to the back cover over the access opening to seal the access opening. A filter cartridge is removably disposed within the cavity.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: May 20, 2003
    Assignee: Rexair, Inc.
    Inventors: John J. Alberts, III, William H. Schmid, Scott A. Zaremba
  • Filter assembly for a vacuum cleaner
    Publication number: 20020152893
    Abstract: A filter assembly for a vacuum cleaner that includes a main housing having an inlet and an outlet. A motor moves air from the inlet to the outlet, and a first filter is arranged between the inlet and the outlet for filtering the air. An inner wall and an outer wall that is spaced apart from the inner wall form a cavity between the walls. The cavity is located between the first filter and the outlet. The inner wall has an inner opening that permits air to flow from the first filter into the cavity, and the outer wall has an outer opening. A back cover is removably secured to the outer wall over the outer opening to seal the cavity and guide the air from the cavity to the outlet. The back cover includes an access opening that is removably secured to the back cover over the access opening to seal the access opening. A filter cartridge is removably disposed within the cavity.
    Type: Application
    Filed: April 23, 2002
    Publication date: October 24, 2002
    Inventors: John J. Alberts, William H. Schmid, Scott A. Zaremba
  • Filter assembly for a vacuum cleaner
    Patent number: 6432180
    Abstract: A filter assembly for a vacuum cleaner that includes a main housing having an inlet and an outlet. A motor moves air from the inlet to the outlet, and a first filter is arranged between the inlet and the outlet for filtering the air. An inner wall and an outer wall that is spaced apart from the inner wall form a cavity between the walls. The cavity is located between the first filter and the outlet. The inner wall has an inner opening that permits air to flow from the first filter into the cavity, and the outer wall has an outer opening. A back cover is removably secured to the outer wall over the outer opening to seal the cavity and guide the air from the cavity to the outlet. The back cover includes an access opening that is removably secured to the back cover over the access opening to seal the access opening. A filter cartridge is removably disposed within the cavity.
    Type: Grant
    Filed: July 23, 2001
    Date of Patent: August 13, 2002
    Assignee: Rexair, Inc.
    Inventors: John J. Alberts, III, William H. Schmid, Scott A. Zaremba
  • Filter assembly for a vacuum cleaner
    Publication number: 20010042442
    Abstract: A filter assembly for a vacuum cleaner that includes a main housing having an inlet and an outlet. A motor moves air from the inlet to the outlet, and a first filter is arranged between the inlet and the outlet for filtering the air. An inner wall and an outer wall that is spaced apart from the inner wall form a cavity between the walls. The cavity is located between the first filter and the outlet. The inner wall has an inner opening that permits air to flow from the first filter into the cavity, and the outer wall has an outer opening. A back cover is removably secured to the outer wall over the outer opening to seal the cavity and guide the air from the cavity to the outlet. The back cover includes an access opening that is removably secured to the back cover over the access opening to seal the access opening. A filter cartridge is removably disposed within the cavity.
    Type: Application
    Filed: July 23, 2001
    Publication date: November 22, 2001
    Applicant: Rexair, Inc.
    Inventors: John J. Alberts, William H. Schmid, Scott A. Zaremba
  • Filter assembly for a vacuum cleaner
    Patent number: 6312508
    Abstract: A filter assembly for a vacuum cleaner that includes a main housing having an inlet and an outlet. A motor moves air from the inlet to the outlet, and a first filter is arranged between the inlet and the outlet for filtering the air. An inner wall and an outer wall that is spaced apart from the inner wall form a cavity between the walls. The cavity is located between the first filter and the outlet. The inner wall has an inner opening that permits air to flow from the first filter into the cavity, and the outer wall has an outer opening. A back cover is removably secured to the outer wall over the outer opening to seal the cavity and guide the air from the cavity to the outlet. The back cover includes an access opening that is removably secured to the back cover over the access opening to seal the access opening. A filter cartridge is removably disposed within the cavity.
    Type: Grant
    Filed: January 25, 2000
    Date of Patent: November 6, 2001
    Assignee: Rexair, Inc.
    Inventors: John J. Alberts, III, William H. Schmid, Scott A. Zaremba