Patents by Inventor John M. Piwaron

John M. Piwaron 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: 20080282550
    Abstract: A blade assembly for a hair trimmer having a trimmer body and a motor. The blade assembly includes an upper blade having a forward cutting edge, a lower blade having a forward cutting edge and defining a groove, a support member configured for coupling to the trimmer body and having a protrusion, the protrusion configured to be slidingly received in the groove of the lower blade, an actuation member coupled to the lower blade and extending outwardly from the lower blade, and a biasing member retained by the support member and configured to bias the upper blade against the lower blade. The upper blade is configured to oscillate in a transverse direction relative to forward edge of lower blade during operation of motor. The lower blade is configured to move relative to hair trimmer in a longitudinal direction perpendicular to forward edge of upper blade upon movement of actuation member.
    Type: Application
    Filed: June 30, 2008
    Publication date: November 20, 2008
    Applicant: Andis Company
    Inventor: John M. Piwaron
  • Patent number: 6968623
    Abstract: A hair trimmer having an adjustable comb actuator assembly capable of moving a comb to a number of positions between a fully retracted position and a fully extended position for varying the cutting length of the hair trimmer. The actuator assembly includes a comb carriage, a comb button, a lock spring, and a lock button.
    Type: Grant
    Filed: June 18, 2003
    Date of Patent: November 29, 2005
    Assignee: Andis Company
    Inventors: Christopher J. Braun, John M. Piwaron
  • Publication number: 20030233754
    Abstract: A hair trimmer having an adjustable comb actuator assembly capable of moving a comb to a number of positions between a fully retracted position and a fully extended position for varying the cutting length of the hair trimmer. The actuator assembly includes a comb carriage, a comb button, a lock spring, and a lock button.
    Type: Application
    Filed: June 18, 2003
    Publication date: December 25, 2003
    Applicant: Andis Company, Sturtevant, Wisconsin
    Inventors: Christopher J. Braun, John M. Piwaron
  • Patent number: 6112414
    Abstract: A hand-held beauty appliance assembly comprising a hand-held beauty appliance and a battery charger. The hand-held beauty appliance includes an appliance housing portion including a rechargeable battery socket having therein a keyway groove, a frame fixedly supported within the appliance housing portion, an electrical motor fixedly supported on the frame, and a pair of electrical terminals connected to the electrical motor and fixedly supported on the frame. The hand-held appliance also includes a rechargeable battery portion insertable into the battery socket and including a pair of electrical terminals in engagement with the pair of electrical terminals of the appliance housing portion when the rechargeable battery portion is located in the battery socket.
    Type: Grant
    Filed: September 9, 1998
    Date of Patent: September 5, 2000
    Assignee: Andis Company
    Inventors: Matthew L. Andis, Robert E. Derby, John M. Piwaron
  • Patent number: 6076263
    Abstract: Disclosed herein is a hair clipper comprising a blade set, a blade drive assembly located in rearward relation to the blade set and drivingly connected to the blade set, a housing assembly extending rearwardly from the blade set and including a main portion, and a removable portion located adjacent the blade set in enclosing relation to the blade drive assembly, and structure on the main portion and on the removable portion resiliently and removably connecting the removable portion to the main portion.
    Type: Grant
    Filed: July 17, 1997
    Date of Patent: June 20, 2000
    Assignee: Andis Company
    Inventors: Mathew L. Andis, John M. Piwaron
  • Patent number: 5604985
    Abstract: A handheld appliance including a housing including a surface area, a moveable member moveable relative to the surface of the housing, and a latch for releasably preventing and permitting movement of the moveable member relative to the housing and including a series of indentations in the surface area of the housing, and a latch member movably carried on the moveable member for movement between a latch position preventing movement of the moveable member relative to the housing and a release position permitting movement of the moveable member relative to the housing, the latch member including a generally planar base portion, and a flange portion which is received in a selected one of the indentations when the latch member is in the latch position and free of the indentations when the latch member is in the release position.
    Type: Grant
    Filed: August 25, 1994
    Date of Patent: February 25, 1997
    Assignee: Andis Company
    Inventors: Matthew L. Andis, John M. Piwaron
  • Patent number: 5088200
    Abstract: A hair trimmer including a body adapted to support a cutting assembly having a reciprocable cutter, a rotatable drive housed by the body for reciprocating the cutter, and a hinge including a guide plate and a reciprocable yoke support which is engaged with the drive and which is reciprocably movable with respect to the guide plate for guiding movement of the drive relative to the guide plate.
    Type: Grant
    Filed: October 11, 1990
    Date of Patent: February 18, 1992
    Assignee: Andis Company
    Inventors: John M. Piwaron, Daniel L. Sukow, Matthew L. Andis