Patents Assigned to Risdon Enterprises, Inc.
  • Patent number: 4674237
    Abstract: An improved scouring pad device comprises first and second bats each of which is made of a porous, fiberous, heat-weldable, polymeric material having an outer abrasive surface and an inner surface opposite the outer abrasive surface. An envelope layer of fluid impervious, heat-weldable, sheet-like polymeric material, and having outwardly and inwardly facing surfaces, lies adjacent each of the bats with the outwardly facing surface of the envelope layer confronting the inner surface of the bat. A reservoir layer of heat-weldable liquid absorbent material is disposed between the inwardly facing surfaces of the envelope layers. The bats, the two envelope layers, and the reservoir layer are welded together at a continuous closed boundary. A cleaning composition such as soap is carried in the reservoir layer and is temporarily confined between the first and second envelope layers within the boundary.
    Type: Grant
    Filed: May 7, 1981
    Date of Patent: June 23, 1987
    Assignee: Risdon Enterprises, Inc.
    Inventor: William E. Sullivan
  • Patent number: 4529125
    Abstract: An improved device for dispensing a volatile substance into the environment includes a reservoir layer, having opposing first and second surfaces, for holding the substance and first and second envelope layers respectively in close proximity to the first surface and the second surface of the reservoir layer. At least a portion of at least one envelope layer is permeable to the substance. The reservoir layer and envelope layers are fused together at a first generally circular, continuous boundary at which the reservoir layer is non-permeable to the substance to thereby define a generally circular region within which the substance is confined. The reservoir layer and envelope layers are further fused together at a second non-circular boundary completely enclosing the first boundary and the region to thereby define an outer, decorative, peripheral shape of the device.
    Type: Grant
    Filed: October 2, 1980
    Date of Patent: July 16, 1985
    Assignee: Risdon Enterprises, Inc.
    Inventor: William E. Sullivan
  • Patent number: 4529124
    Abstract: An improved device for dispensing a volatile substance into the environment includes a reservoir layer, having opposing first and second surfaces, for holding the substance and first and second envelope layers respectively in close proximity to the first surface and the second surface of the reservoir layer. At least a portion of at least one envelope layer is permeable to the substance. The reservoir layer and envelope layers are fused together at a first generally circular, continuous boundary at which the reservoir layer is nonpermeable to the substance to thereby define a generally circular region within which the substance is confined. The reservoir layer and envelope layers are further fused together at a second non-circular boundary completely enclosing the first boundary and the region to thereby define an outer, decorative, peripheral shape of the device.
    Type: Grant
    Filed: October 2, 1980
    Date of Patent: July 16, 1985
    Assignee: Risdon Enterprises, Inc.
    Inventors: William E. Sullivan, Joseph M. Fore
  • Patent number: 4432938
    Abstract: The disclosed battery-powered vapor dispensing apparatus has a housing with an access opening, an air intake port, an air discharge port, and means for supporting a vaporizable product in a path between the intake and discharge ports. A structurally-integrated mechanism for creating air flow along the path, assembles as a unit with the housing. The mechanism includes a chassis and an electric motor having electrical contact lugs on one end and a shaft supporting a fan projecting from the other. The chassis comprises a base, means for mounting the motor, a battery compartment, and means for mounting two resilient wire connectors such that one portion of each is resiliently urged against a lug of the motor and a second portion of each is resiliently urged against a battery terminal.
    Type: Grant
    Filed: April 30, 1981
    Date of Patent: February 21, 1984
    Assignee: Risdon Enterprises, Inc.
    Inventor: Murray O. Meetze, Jr.
  • Patent number: 4376483
    Abstract: A device for holding and dispensing a substance such as a liquid, paste or the like, comprises a layer of substance absorbent but heat-sealable reservoir material, for holding the substance, that has two principal surfaces. A first sheet of heat-sealable cover material is disposed in close proximity to one of the principal surfaces of the layer and a second sheet of heat-sealable cover material is disposed in close proximity to the other of the principal surfaces of the layer. The cover materials are substantially impermeable to the substance, are different from the reservoir material, and have different and higher heat sealing temperatures than the reservoir material. The sheets and the layer are compressed together at a continuous boundary at a temperature above the heat sealing temperature of the reservoir material but below the heat sealing temperature of the cover material.
    Type: Grant
    Filed: December 31, 1980
    Date of Patent: March 15, 1983
    Assignee: Risdon Enterprises, Inc
    Inventor: William E. Sullivan
  • Patent number: 4276236
    Abstract: A battery-powered apparatus, for inducing air flow past a product capable of being vaporized, includes a compact housing that comprises a hollow outer shell and a hollow, generally cylindrical inner shell, having an axis, on which the operating components of the apparatus are supported. The inner shell is mounted with the outer shell by a hinge to pivot substantially on the axis between closed and open positions. In the closed position the inner shell compliments the outer shell to define an enclosed space and shield the apparatus components. In the open position, the inner shell is nested within the outer shell to expose the apparatus components. The product and a battery for powering the apparatus may be assembled into a cartridge formed to be received in the apparatus housing. Electrical battery contacts and a support for the cartridge in the housing are also disclosed.
    Type: Grant
    Filed: February 4, 1980
    Date of Patent: June 30, 1981
    Assignee: Risdon Enterprises, Inc.
    Inventors: William E. Sullivan, Murray O. Meetze, Jr.
  • Patent number: 4271092
    Abstract: A battery-powered apparatus, for inducing air flow past a product capable of being vaporized, includes a compact housing that comprises a hollow outer shell and a hollow, generally cylindrical inner shell, having an axis, on which the operating components of the apparatus are supported. The inner shell is mounted with the outer shell by a hinge to pivot substantially on the axis between closed and open positions. In the closed position the inner shell compliments the outer shell to define an enclosed space and shield the apparatus components. In the open position, the inner shell is nested within the outer shell to expose the apparatus components. The product and a battery for powering the apparatus may be assembled into a cartridge formed to be received in the apparatus housing. Electrical battery contacts and a support for the cartridge in the housing are also disclosed.
    Type: Grant
    Filed: February 16, 1979
    Date of Patent: June 2, 1981
    Assignee: Risdon Enterprises, Inc.
    Inventors: William E. Sullivan, O. Murray Meetze, Jr., Richard H. Seager
  • Patent number: D269997
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: August 2, 1983
    Assignee: Risdon Enterprises, Inc.
    Inventor: Richard H. Seager