Patents Represented by Attorney Joseph H. Yamaoka
  • Patent number: 5757037
    Abstract: The power thyristor of this invention has a cellular emitter structure. Each cell also has a FET assisted turn-on gate integrated into the cell. A turn-on gate voltage of one polarity is applied to a FET gate element that overlies the surface of the cell and to the turn-on gate integrated into the cell. When this voltage is so applied, a channel underlying the FET gate element becomes conductive, which allows the integrated turn-on gate to provide drive to the upper base-upper emitter junction of the thyristor cell thereby turning the thyristor cell on.
    Type: Grant
    Filed: February 1, 1995
    Date of Patent: May 26, 1998
    Assignee: Silicon Power Corporation
    Inventors: Dante E. Piccone, Harshad Mehta
  • Patent number: 4938382
    Abstract: A cabinet for dispensing a sheet of paper from a stack of paper sheets in the cabinet. Means are provided in the cabinet for restricting the length of the stack of paper that can be placed in the cabinet when the cabinet is open. The restricting means is movable to a pressure relieving position when the cabinet is closed.
    Type: Grant
    Filed: May 22, 1989
    Date of Patent: July 3, 1990
    Assignee: Scott Paper Company
    Inventors: Alan D. Frazier, Richard P. Lewis, Richard O. Norman
  • Patent number: 4872601
    Abstract: A wall mounted toilet tissue dispenser for two very large rolls of toilet tissue. The rolls are rotatably supported side by side in the dispenser with the axis of each roll perpendicular to the mounting wall of the dispenser. Paper is dispensed through a dispensing opening located at the bottom of the dispenser. Tail guide members are provided in the dispenser for limiting the location in the dispensing opening of the tail of each roll of tissue and for guaranteeing that the paper is at an angle to the vertical when the paper is severed so that after the paper is cut the tail will project below the dispensing opening when the paper falls to a vertical position.
    Type: Grant
    Filed: September 4, 1987
    Date of Patent: October 10, 1989
    Assignee: Scott Paper Company
    Inventor: Jerry A. Sigmund
  • Patent number: 4756485
    Abstract: A multiple roll towel dispenser. The dispenser cabinet has a pair of feed rollers forming a feed roll nip, means for driving one of the feed rollers to dispense web from the cabinet, means in the cabinet for supporting a first roll of web material with its web extended between the feed roll nip, and means for supporting a second roll of web material with its web extended adjacent to the feed roll nip. The dispenser also includes means, contacting the edge of the first roll, having a first position for sensing the diameter of the first roll; means, connected to the sensing means, for biasing the sensing means against the edge of the first roll; biased transfer means for introducing the extended web of the second roll into the feed roll nip; and stop means, connected to the sensing means, the stop means being located to resist motion of the transfer means at a ready position when the edge of the first roll resists movement of the sensing means.
    Type: Grant
    Filed: March 11, 1987
    Date of Patent: July 12, 1988
    Assignee: Scott Paper Company
    Inventors: Lehyman J. Bastian, Alan D. Frazier, Dean H. Heili, Richard D. Kley
  • Patent number: 4749423
    Abstract: A method of making a nonwoven fibrous web. A web of primary fibers having uniformly distributed throughout secondary fibers containing 3 to 7 percent polyethylene by weight of the final web is formed on a conveying means. The polyethylene of the secondary fibers has a melting point that is lower than the melting point of the primary fibers. The web is then heated to a temperature below the melting point of the primary fibers but above the melting point of the polyethylene of the secondary fibers thereby causing some of the polyethylene fibers to bond to each other or to the primary fibers. The web is then heated to a temperature above the melting point of the primary fibers to form primary fiber-to-primary fiber thermal bonds which provide substantially all of the useful strength of the web.
    Type: Grant
    Filed: May 14, 1986
    Date of Patent: June 7, 1988
    Assignee: Scott Paper Company
    Inventors: Lawrence Vaalburg, H. Paul Kaiser
  • Patent number: 4705195
    Abstract: A liquid dispenser. The liquid dispenser includes a pump chamber connected to a storage chamber through a first passage. A valve body extends through the first passage and controls the liquid flow around the valve body and between the pump chamber and the storage chamber. The valve body provides a second internal connecting passage between the pump chamber and the storage chamber and an additional valve located within the valve body controls the flow of liquid between the pump chamber and storage chamber through the second internal connecting passage.
    Type: Grant
    Filed: January 24, 1986
    Date of Patent: November 10, 1987
    Assignee: Sani-Fresh International, Inc.
    Inventor: Samuel C. Heck
  • Patent number: 4705420
    Abstract: A cleaning system utilizing a hollow bodied, disposable dispensing capsule or package comprising a storage chamber and integral dispensing chamber made of a plastic material. The package is connected to the system handle via a conical protrusion on the package closure. An orifice separating the two chambers is provided with a movable, inlet clapper valve, the dispensing chamber outlet orifice being normally closed by a spring urged valve. Deformation of the elastic walls of the bellows shaped dispensing chamber dispenses a discrete amount of liquid to the system handle without relying on gravity. Compression of the dispensing chamber reduces the volume thereof, closes the inlet clapper valve, and opens the outlet valve to dispense the product. The conically shaped storage chamber provides for ready pumping and evacuation of cleaning fluid therefrom, the flexible walls collapsing inward as a result of the vacuum created by the decompression of the dispensing chamber.
    Type: Grant
    Filed: March 21, 1986
    Date of Patent: November 10, 1987
    Assignee: Sani-Fresh International, Inc.
    Inventors: David J. Bokmiller, Samuel C. Heck
  • Patent number: 4682942
    Abstract: A dry-formed web is transferred at speeds in excess of 300 feet per minute onto a stable, porous, endless belt and both the dry-formed web and the belt are conveyed through the embossing nip. The combination of the dry-formed web and the belt are guided into the embossing nip so that the web and belt partially wraps the embossing roll before entering the embossing nip. As the embossing roll contacts the web, some of the air in the web is forced through the porous belt.
    Type: Grant
    Filed: August 12, 1985
    Date of Patent: July 28, 1987
    Assignee: Scott Paper Company
    Inventors: Joel P. Gotchel, Henry J. Norton, Rudolf Neuenschwander, Daniel J. Stango
  • Patent number: 4678105
    Abstract: A safety lock mechanism for a cleaning wand. A three position slide switch alternately engages a pivotal trigger and/or a pivotal door on the end of the wand handle opposite the cleaning head. In the first position, the trigger is locked and the door openable. In the second position, the trigger and door are both locked. In the third position, the handle door is locked but the trigger is operable. Controlled engagement of the trigger and/or door with the slide switch prohibits unwanted loss or discharge of cleaning fluid.
    Type: Grant
    Filed: September 20, 1984
    Date of Patent: July 7, 1987
    Assignee: Sani-Fresh International, Inc.
    Inventor: Samuel C. Heck
  • Patent number: 4660781
    Abstract: A dispenser for a roll (10) of sanitary paper wound on a hollow core (12). The dispsenser (10) has a core supporting member (16) that contacts the inner surface (13) of the core (12) and has a braking surface (20). The coefficient of friction between the member (16) supporting the roll (10) and the inner surface (13) of the core (12) is less than the coefficient of friction between the braking surface (20) and the inner surface (13) of the core (12). The dispenser (10) also includes a compliant member (18), such as a spring, connected to the core supporting member (16). The compliant member (18) is responsive to the weight of the roll (10) and urges the inner surface (13) of the core (12) toward the braking surface (20). At some point during the dispensing of the roll (10), the frictional force, or drag, developed between the inner surface (13) of the core (12) and the braking surface (20) increases as the weight of the roll (10) decreases.
    Type: Grant
    Filed: December 20, 1984
    Date of Patent: April 28, 1987
    Assignee: Scott Paper Company
    Inventor: James E. Hazard
  • Patent number: D289262
    Type: Grant
    Filed: June 8, 1984
    Date of Patent: April 14, 1987
    Assignee: Scott Paper Company
    Inventors: Elmer Goetz, Kenard E. Urion
  • Patent number: D291039
    Type: Grant
    Filed: September 20, 1984
    Date of Patent: July 28, 1987
    Assignee: Sani-Fresh International, Inc.
    Inventor: David J. Bokmiller
  • Patent number: D291259
    Type: Grant
    Filed: September 20, 1984
    Date of Patent: August 4, 1987
    Assignee: Sani-Fresh International, Inc.
    Inventors: Samuel C. Heck, David J. Bokmiller
  • Patent number: D291485
    Type: Grant
    Filed: September 20, 1985
    Date of Patent: August 18, 1987
    Assignee: Sani-Fresh International, Inc.
    Inventors: Richard O. Norman, John R. Frassanito
  • Patent number: D291594
    Type: Grant
    Filed: September 20, 1985
    Date of Patent: August 25, 1987
    Assignee: Sani-Fresh International, Inc.
    Inventors: Richard O. Norman, John R. Frassanito
  • Patent number: D293750
    Type: Grant
    Filed: March 8, 1985
    Date of Patent: January 19, 1988
    Assignee: Scott Paper Company
    Inventor: Samuel S. Leotta
  • Patent number: D296765
    Type: Grant
    Filed: December 15, 1983
    Date of Patent: July 19, 1988
    Assignee: Scott Paper Company
    Inventor: Kenard E. Urion
  • Patent number: D310922
    Type: Grant
    Filed: September 4, 1987
    Date of Patent: October 2, 1990
    Assignee: Scott Paper Company
    Inventor: Jerry A. Sigmund
  • Patent number: D315298
    Type: Grant
    Filed: March 7, 1988
    Date of Patent: March 12, 1991
    Assignee: Scott Paper Company
    Inventor: N. Dominic Marucci
  • Patent number: D359408
    Type: Grant
    Filed: October 19, 1987
    Date of Patent: June 20, 1995
    Assignee: Scott Paper Company
    Inventor: John R. Frassanito