Patents Examined by Edward C. Donovan
  • Patent number: 5058631
    Abstract: A process and system for recovering refrigerant from refrigeration systems without substantial contamination of the atmosphere. The system includes devices for removing refrigerant from the system under the vapor pressure of the refrigerant or with aid from a pump, a conduit for conveying the refrigerant from the system, and a collapsible bag constructed of a flexible material substantially impermeable to refrigerant and to air, having at least one inlet for introducing refrigerant to be salvaged and sealing means for sealing the inlet on the bag. After filling, the bags may be transported to a recovery system for recovering refrigerant from the bag so that the refrigerant may be purified and recovered for reuse.
    Type: Grant
    Filed: August 16, 1989
    Date of Patent: October 22, 1991
    Assignee: Ashland Oil, Inc.
    Inventor: David C. H. Grant
  • Patent number: 5023961
    Abstract: A bidet accessory for mounting to the rear flanged section of two-piece toilet fixtures and removably connected to hot and cold water supplies. An outlet is connected through a flexible conduit to a sprayer that is, when not in use, held in place by the supporting assembly. A mounting assembly is mounted to the supporting assembly and it allows for the installation of the bidet accessory in a multitude of different angles depending on the users' preferences and space constraints.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: June 18, 1991
    Inventor: Nelson A. Alonso
  • Patent number: 4997012
    Abstract: A method of dispensing at a tap an effervescent liquid from a keg-like supply comprises the steps of generally continuously monitoring the weight of the supply and generating an output corresponding thereto, collecting at the tap the liquid that overflows from a vessel into which it is being dispensed, weighing the collected overflow liquid and generating an output corresponding to this weight, comparing the outputs and calculating the difference therebetween, and periodically recording the difference.
    Type: Grant
    Filed: January 9, 1989
    Date of Patent: March 5, 1991
    Inventor: Swiatoslaw Kuziw
  • Patent number: 4987619
    Abstract: A modular bathing cabinet is disclosed which is adapted to be easily transported to and assembled at the location of final use. The bathing cabinet may be in the form of either a shower stall or a bathing tub, and it includes a base, and an upright enclosure which includes a pair of opposite side sections which are of generally L-shape in cross-section and which are joined to each other along a vertical junction line in the back wall of the enclosure. Each of the side sections includes a plurality of horizontal reinforcing metal straps fixed along the outside surface, and the reinforcing straps of the side sections are bolted together to form a secure and rigid interconnection along the vertical junction line. Also, the straps are directly connected to the vertical wall studs of the building, to further rigidify the structure.
    Type: Grant
    Filed: September 7, 1988
    Date of Patent: January 29, 1991
    Inventor: Lee A. Smith
  • Patent number: 4986321
    Abstract: A fuel dispensing nozzle for gasoline fuel pumping stations and the like has an inlet through which the fuel is supplied within a range of inlet pressures, an outlet from which fuel is discharged and a flow passage having valving for selectively opening communication between the inlet and the outlet in response to the pressure differential across the valving. The valving includes a housing within which a movable valve member is mounted, the valve member being actuated to open or partially close communication from an inlet of the housing to an outlet of the housing in response to the pressure differential across the valve member. As the pressure differential decreases above the pressure differential corresponding to the predetermined maximum rate, the valve member begins to close communication to prevent the flow from exceeding the predetermined maximum amount, and as the pressure differential increases communication is decreased so that the maximum predetermined flow rate is not exceeded.
    Type: Grant
    Filed: July 27, 1989
    Date of Patent: January 22, 1991
    Inventors: Leonard R. Nitzberg, Paul D. Manhardt
  • Patent number: 4985943
    Abstract: A hydrotherapeutic jet for a hydrotherapeutic receptacle employs three nozzels and two separate mixing chambers. A primary stream of water flows through the first nozzel to create a low pressure condition which sucks air into the first mixing chamber, causing the primary stream to be mixed with the air. The primary stream is discharged through the second nozzle into the second mixing chamber, thereby creating another low pressure condition which sucks a secondary stream of water from the hydrotherapeutic receptacle into the second mixing chamber and hence causes the aerated primary stream to be entrained with the secondary stream. The air/water mixture is then discharged from the second mixing chamber into the hydrotherapeutic receptacle by te third nozzle.
    Type: Grant
    Filed: September 8, 1989
    Date of Patent: January 22, 1991
    Assignee: Hayward Industries, Inc.
    Inventors: Samuel Tobias, Robert M. Messinger
  • Patent number: 4982460
    Abstract: A jet fitting for a hydrotherapeutic receptacle includes an internal chamber which functions as a mixing chamber as well as a suction chamber. A primary stream of water is supplied to the mixing chamber in such a manner that a low pressure condition is created within the mixing chamber for entraining a secondary stream of water which flows from the hydrotherapeutic receptacle to the mixing chamber and for entraining air from an outside source.
    Type: Grant
    Filed: March 28, 1989
    Date of Patent: January 8, 1991
    Assignee: Hayward Industries, Inc.
    Inventors: Samuel Tobias, William E. Treene, George E. Williams
  • Patent number: 4980931
    Abstract: A self sterilizing toilet seat is provided that includes a built-in mechanism in which detergent, water and air can respectively wash and dry the toilet seat. The built-in mechanism is so constructed that it can only operated when the toilet seat is placed in a down position onto a rim of a toilet bowl.
    Type: Grant
    Filed: September 1, 1989
    Date of Patent: January 1, 1991
    Inventor: Chaskel Meisels
  • Patent number: 4975989
    Abstract: A disposal unit, for the disposal of dog waste, comprises a casing having an inlet slot in its upper wall, from which a chute leads downwardly within the casing to a bowl. An outlet conduit, incorporating a U-bend water trap, leads from the bowl out of the casing for connection to a sewage system. A flushing cistern is mounted within the casing and is operated by an external lever. In use, the dog waste is picked up in a scoop, placed in a disposable paper bag, and then deposited through the slot. It slides down into the bowl from where it may be flushed away by operation of the lever.
    Type: Grant
    Filed: November 29, 1988
    Date of Patent: December 11, 1990
    Inventor: Gary Sutton
  • Patent number: 4975993
    Abstract: A shower device for connection to a fixed water outlet that extends out from a vertical wall includes a T-connection having a central opening that is mountable on the water outlet. A first articulated shower-head assembly is movably mounted on one side opening of the T-connection so that a first shower-head can be manually disposed at any position in a first predetermined sector that lies in a plane normal to the wall. A second articulated shower-head assembly is movably mounted on the other side opening of the T-connection so that a second shower-head can be disposed at any position in a second predetermined sector that lies in another plane normal to the wall.
    Type: Grant
    Filed: December 27, 1988
    Date of Patent: December 11, 1990
    Inventors: David Black, Caron J. Black, Daniel E. Williams
  • Patent number: 4974262
    Abstract: A hinge for a toilet seat and lid includes a bowl leaf, a seat leaf and a lid leaf. The bowl leaf includes a base, means for securing the bowl leaf to a toilet bowl, and a pair of spaced socket portions extending upwardly from the forward end of the bowl leaf base. The seat leaf has a base for securing the seat leaf to a toilet seat, and a hinge pin receiving member extending upwardly from the rear end of the base and having an aperture formed therein for receiving a pair of hinge pins. The lid leaf includes a base, means for securing a lid leaf to a toilet seat lid, and a pair of hinge pin supports extending downwardly from the rear portion of the base. Each hinge pin support as a pair of hinge members extending laterally in opposite directions. The slot extends generally upwardly and rearwardly in the hinge pin receiving member. A hinge pin retaining member extends from one of the walls of the slot.
    Type: Grant
    Filed: July 11, 1988
    Date of Patent: December 4, 1990
    Assignee: Ginsey Industries, Inc.
    Inventor: Maurice M. Rosen
  • Patent number: 4974645
    Abstract: A fuel filler assembly (10) for a fuel tank (12) of a vehicle including a filler tube (14) for directing fuel to the tank (12) and a vent tube (15). The vent tube (15) is closed by a float valve (24) when the tank is filled to capacity and an equalizing port (27) is provided in the vent tube (15) to balance the pressure between the upper portion of the filler neck and the vapor dome area of the tank. When pressure is relieved by removing the filler cap, relief valve (25) located above the float valve (24) and within the vapor dome of the fuel tank operates to allow pressure relief from the vapor dome of the fuel tank. A check valve (20) is provided in the filler tube (14) at the fuel tank (12). The check valve (20) in the filler tube (14) features a valve element (38) having cylindrical sides (39) and a hemispherical end (41) which is received in a housing (32) having cylindrical walls (34) and an annular seat (40) against which the hemispherical end (41) of the valve element (38) seals.
    Type: Grant
    Filed: January 9, 1990
    Date of Patent: December 4, 1990
    Assignee: Ford Motor Company
    Inventor: Donald J. Johnson
  • Patent number: 4970734
    Abstract: A shower stall booth is converted into a bath by supporting an integral sheet of waterproof material against the upstanding walls of the shower stall. Support components extend across the open side of the shower stall to further support the waterproof sheet. A second embodiment enables the waterproof insert to extend outward from within the stall shower to any desired length and breadth. A third embodiment enables the waterproof tub insert to extend upward to any desire height. Fourth and fifth embodiments accomplish the shower stall bath conversion by means of affixing either a watertight wall or a partial tub insert to the open side of the shower stall.
    Type: Grant
    Filed: September 26, 1988
    Date of Patent: November 20, 1990
    Inventors: Moshe Friedman, David Rohinsky
  • Patent number: 4969218
    Abstract: This semi-flush kit is designed for employment with a simple high buoyancy flush valve toilet tanks. Primarily, it consists of two main floats and each are controlled by a right and left rotation of a toilet tank operator's handle. One float of the combination controls a pre-determined lower water level in the tank, and the other controls a second and higher level of water in the tank that may be discharged as desired.
    Type: Grant
    Filed: June 2, 1988
    Date of Patent: November 13, 1990
    Inventor: Joseph Comparetti
  • Patent number: 4969220
    Abstract: A splash minimizing apparatus for washing hands having associated valves and fixtures, includes a back plate having an upper portion through which the valves and/or fixtures may be supported, this back panel also having a lower portion; a bottom receptacle affixed to the lower portion of the back panel, the bottom receptacle having portions defining a drain hole; two trapezoid-shaped side panels perpendicularly disposed with respect to the back panel, the side panels having bottom edged portions disposed within the bottom receptacle; a rectangular front panel having an upper edge and a lower edge, the front panel inclinedly disposed with respect to the back plate so that every point on the respective upper lower edges is uniformly distant from the back plate, the upper edge of the front panel spaced further from the back plate than the lower edge, the lower edge of the front panel being disposed within the bottom receptacle; and various bolts and elements which may be sleeves for vertically maintaining the po
    Type: Grant
    Filed: August 12, 1988
    Date of Patent: November 13, 1990
    Assignee: Societe Agencinox
    Inventor: Jean-Claude Raigneau
  • Patent number: 4965889
    Abstract: Said cover (1) comprises a seat (3) and a lid (4), which are hinged on a base (6) attached to the back of bowl (2). Seat (3) and lid (4) are joined together by hinge (5) and quick fastening device (8, 19) is provided to attach seat/lid unit (3, 4) to fixed base (4), or to unlock said unit so that it may be removed, without separating seat (3) from lid (4). Said disassembly and reassembly operations, especially for cleaning purposes, are thus facilitated.
    Type: Grant
    Filed: February 17, 1989
    Date of Patent: October 30, 1990
    Assignee: Tissot, S.A.
    Inventors: Patrick Tissot, Jean Guy, Claude Patel
  • Patent number: 4966207
    Abstract: A disposable container for shipping a hazardous or ultra-high purity liquid material is disclosed, having a body of substantially vapor-impermeable organic polymer material, such as fluorinataed linear high-density polyethylene, a bubbler tube extending from the top of the container having an open end near the bottom of the container, a liquid level detector, and an outlet tube on the top of the container having an open bottom end near the top of the container. A vapor-impermeable metal coating is provided on the outside of the container by vapor deposition or sputtering. A frangible seal is provided at the top of both the inlet tube and the outlet tube. A metal-coated polymer valve is provided on the bubbler, having vapor-impermeable seals isolating the metal exterior from the metal interior, and also having means for rupturing the frangible seal.
    Type: Grant
    Filed: May 31, 1989
    Date of Patent: October 30, 1990
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Richard E. Howard, Joseph P. Keene
  • Patent number: 4964181
    Abstract: The combination of a shower head attachment having spaced pulsating shower heads to deliver water in pulses at spaced locations of the user's body. A waterproof radio tape player containing a pre-recorded tape of instructions for use in hydrotherapy or for personal use, and a water supply having means for varying the water force and temperature.
    Type: Grant
    Filed: May 31, 1988
    Date of Patent: October 23, 1990
    Assignee: M. A. Industries Ltd.
    Inventor: Mayer Alpert
  • Patent number: 4964445
    Abstract: An apparatus for filling a liquid friction pump with a liquid comprises a metering pump and plug connector means for connection to the liquid friction coupling. During a testing of the filling ratio of the liquid friction pump it may be necessary not only to supply viscous liquid to said coupling but also to withdraw viscous liquid from such coupling. For that purpose the plug connector means are preceded by a manifold, which communicates with two nonreturn valves, which normally prevent a flow of liquid from said manifold through said valves. A discharge line from the metering pump communicates with a first of said nonreturn valves. The second nonreturn valve is incorporated in a return line leading from said manifold to a reservoir, from which the metering pump is adapted to suck liquid. Said second nonreturn valve is adapted to be opened preferably by the application of pneumatic pressure for a flow in said return line from said manifold through said second valve to said reservoir.
    Type: Grant
    Filed: July 6, 1989
    Date of Patent: October 23, 1990
    Assignee: Steyr-Daimler-Puch AG
    Inventor: Gottfried Weinberger
  • Patent number: 4962549
    Abstract: A passive dispenser, adapted to be positioned in the cistern of a toilet, useful for dosing a toilet bowl with an additive such as a disinfectant, cleaning agent, colorant, perfume or the like, has a first chamber and a second chamber separated by a common wall having an opening therein, a second wall extending upwardly from a base of a second of the chambers and spaced apart from the common wall opening to define a cavity having an open upper end to permit fluid communication between the chambers, the first chamber being adapted to hold the additive, the second chamber having a filling means to admit water thereinto during filling of the cistern and a discharge means to discharge additive-containing water into the toilet bowl when the toilet is flushed.
    Type: Grant
    Filed: May 5, 1989
    Date of Patent: October 16, 1990
    Assignee: R & C Products Pty. Limited
    Inventor: Stephen King