Patents Assigned to Shop Vac
  • Patent number: 8141231
    Abstract: An electric motor is described in which a first magnet wire forms a first pole of the coil, is disposed across two terminals of a fuse, and terminates at a first end on a power switch. The portion of the first magnet wire between the terminals of the fuse is severed such that all current of the motor must travel through the conductor of the fuse. The second end of the first magnet wire terminates at dual tang terminal disposed on the brush housing.
    Type: Grant
    Filed: September 15, 2003
    Date of Patent: March 27, 2012
    Assignee: Shop Vac
    Inventors: Melvin E. Wolfe, Jr., Mark E. Baer, Alan R. Ayotte
  • Patent number: 7050929
    Abstract: A system and method of ensuring legitimacy of a sensor signal received from a rotor position sensor in a motor is provided that includes polling the sensor to determine a first state of the sensor signal, determining a first time delay by summing a first plurality of time constants, and initiating a first time delay. Also included is re-polling the sensor to determine a second state of the sensor signal, determining a second time delay by summing a second plurality of time constants, initiating a second time delay if the second state of the sensor signal is the same as the first state of the sensor signal, re-polling sensor to determine a third state of the sensor signal; and considering the sensor signal as a legitimate signal if the third state of the sensor signal is the same as the first and second states of the sensor signal.
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: May 23, 2006
    Assignee: Shop Vac
    Inventors: Neil N. Norell, James M. Robitaille
  • Publication number: 20060089818
    Abstract: A system and method of ensuring legitimacy of a sensor signal received from a rotor position sensor in a motor is provided that includes polling the sensor to determine a first state of the sensor signal, determining a first time delay by summing a first plurality of time constants, and initiating a first time delay. Also included is re-polling the sensor to determine a second state of the sensor signal, determining a second time delay by summing a second plurality of time constants, initiating a second time delay if the second state of the sensor signal is the same as the first state of the sensor signal, re-polling sensor to determine a third state of the sensor signal, and considering the sensor signal as a legitimate signal if the third state of the sensor signal is the same as the first and second states of the sensor signal.
    Type: Application
    Filed: October 21, 2004
    Publication date: April 27, 2006
    Applicant: SHOP VAC
    Inventors: Neil Norell, James Robitaille
  • Publication number: 20060087191
    Abstract: A reluctance machine includes a stator having a stator core. The stator core includes a central bore and a plurality of stator poles extending inwardly from the stator core. Each of the stator poles includes a stator pole face. The reluctance machine further includes a rotor having a plurality of rotor poles. Each of the rotor poles includes a rotor pole face. Each of the rotor pole faces includes a first portion, a second portion that is radially inwardly stepped with respect to the first portion to create a non-uniform air gap between the rotor pole face and a corresponding stator pole face, and a protrusion located at an edge of the second portion of the rotor pole face.
    Type: Application
    Filed: October 21, 2004
    Publication date: April 27, 2006
    Applicant: SHOP VAC
    Inventors: Neil Norell, Mark Baer
  • Publication number: 20060087192
    Abstract: A switched reluctance machine includes a stator body having a stator pole. A bobbin is located on the stator pole. A stator winding is disposed on the bobbin. The switched reluctance machine further includes a first housing unit for receiving the stator body and an insulating member coupled to the first housing unit. The insulating member includes a first mounting element for engaging a first end of the bobbin to secure the bobbin against displacement during machine operation.
    Type: Application
    Filed: October 21, 2004
    Publication date: April 27, 2006
    Applicant: SHOP VAC
    Inventors: Neil Norell, Mark Baer
  • Publication number: 20060087277
    Abstract: A system and method of restarting a switched reluctance motor after a cycling of power provided to the motor is provided that includes receiving at the motor a power-off signal followed by a power-on signal, determining a rotational speed of a rotor, and energizing a stator only when the rotational speed of the rotor is determined to be less than a threshold speed.
    Type: Application
    Filed: October 21, 2004
    Publication date: April 27, 2006
    Applicant: SHOP VAC
    Inventors: Neil Norell, James Robitaille, Mark Baer
  • Patent number: 6557206
    Abstract: A mounting assembly adapted to removably secure a vacuum cleaner to a support includes a mounting rack. The mounting rack has a surface located at its upper end that supports the vacuum cleaner in a suspended state. The mounting assembly also includes a retaining clip connected to the mounting rack. The retaining clip is movable between a first position and a second position. The retaining clip engages an outwardly extending portion of the vacuum cleaner in the first position, and disengages the outwardly extending portion in the second position.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: May 6, 2003
    Assignee: Shop Vac
    Inventor: Li H. Liu