Through Or One-way Fluid Flow Pumps Patents (Class 134/195)
  • Patent number: 4819678
    Abstract: A cleaning unit for cleaning any type parts used domestically or commerically. The unit has a main containing vessel. The containing vessel is divided into upper and lower chambers by a dividing shelf extending across slightly less than the interior of the vessel. A gap is provided thereby for seepage of liquid from the upper to the lower compartment when in use. A small D.C. pump is used to pump liquid from the lower to upper chamber when used.
    Type: Grant
    Filed: June 1, 1988
    Date of Patent: April 11, 1989
    Inventor: James F. Nolan
  • Patent number: 4817649
    Abstract: A parts washer device including a liquid container, a tank and a pump where the liquid container is adapted to carry a liquid solvent therein and has an open end defined by a rim and a closed end remote therefrom. The tank is adapted to be removably positioned on the liquid container such that parts can be washed therein and includes a parts washing portion adapted to be supported above the open end of the liquid container and a skirt portion extending below the parts washing portion and adapted to fit within the open end of said liquid container. The pump includes a pump discharge tube for carrying the liquid solvent from the liquid container to the parts washing portion of the tank and is mounted on the tank so as to extend through and substantially below the skirt portion into the liquid solvent when the tank is supported on the liquid container.
    Type: Grant
    Filed: April 7, 1988
    Date of Patent: April 4, 1989
    Assignee: Graymills Corporation
    Inventors: Robert E. Schmalz, Jr., Kenneth R. Luedtke, Timothy E. Owens
  • Patent number: 4785836
    Abstract: A cleaning apparatus for paint spray gun assemblies includes a cleaning cabinet, a paint cleaning fluid flow-line system and a pneumatic system for circulation of the cleaning fluid through the flow-line system; fluid outlets in the flow-line system eject cleaning fluid under pressure within the cabinet; paint spray guns are supported in the cabinet with paint passage interiors of the guns in direct fluid flow communication with fluid outlets; typically there is a plurality of fluid outlets for cleaning a plurality of spray gun assemblies simultaneously, a time control in the pneumatic system interrupts the circulation of cleaning fluid with a predetermined period, usually less than 60 seconds.
    Type: Grant
    Filed: July 17, 1987
    Date of Patent: November 22, 1988
    Inventor: Soichiro Yamamoto
  • Patent number: 4773436
    Abstract: Improvements in pot and pan washing machines (as opposed to dishwashing machines and drinking glass washing machines); a device adapted to receive large pots and pans used in cooking operations in a restaurant or the like which is downstream, typically, in the work process of cleaning pots and pans, from an initial scraping and scrapping tank, then, typically, is followed by a rinsing tank, the latter then followed by a sanitizer tank; a pot and pan washer tank utilizing a multiplicity of relatively high velocity, underwater, spaced apart water input jets on one wall thereof which provide a tank-wide circulating flow from upper back to lower front and then upwards and back within the tank from the front wall, the jet nozzles being positioned below the operating water level, there preferably being an overflow opening above the jet nozzles and pipes associated therewith, a pump circulating water from a lower portion of the tank at one side thereof to the noted jet nozzles, a faucet being preferably provided abo
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: September 27, 1988
    Assignee: Cantrell Industries, Inc.
    Inventors: John W. Cantrell, Thomas D. Gault, William R. Cantrell
  • Patent number: 4754770
    Abstract: This invention relates to a dishwasher equipped with a single, unidirectional electric motor driving two impellers coaxial to a pump which sends water to a bypass valve containing inlets and outlets. The opening and closing of inlets and outlets is controlled by an actuator thermally activated by a heater/controller. Power is supplied to the controller through leads connected to a timer.
    Type: Grant
    Filed: May 22, 1986
    Date of Patent: July 5, 1988
    Assignee: eltek S.p.A.
    Inventor: Paolo Fornasari
  • Patent number: 4685480
    Abstract: An improved combined washer and aspirator device comprises improved tips, tip seals, reaction well seals and a frame. The improved device reduces the amount of manual dexterity required of a laboratory technologist to wash beads in reaction wells used in diagnostic immunoassays.
    Type: Grant
    Filed: August 30, 1985
    Date of Patent: August 11, 1987
    Assignee: Abbott Laboratories
    Inventor: Paul L. Eck
  • Patent number: 4403735
    Abstract: A group of nozzles are submerged in a tank of liquid to produce convergent-divergent vortices and cavitation in a liquid which in turn produce acoustic vibrations which assist in cleaning articles placed in the liquid, or in emulsifying a mixture of liquids. Each such nozzle comprises a body, with a central axis, an inlet at one end for supply of liquid under pressure thereto, and a plurality of discrete outlet ports at the other end transversely spaced from the central axis, the axes of the ports converging externally of the body towards the central axis whereby liquid supplied to the inlet under pressure emerges from the outlets in discrete jets directed to pass close to but not to intersect the central axis of the body.
    Type: Grant
    Filed: July 31, 1980
    Date of Patent: September 13, 1983
    Assignee: Rolls Royce Limited
    Inventor: Colin R. Weaver
  • Patent number: 4341568
    Abstract: A device and method for washing an object in a receptacle. The device includes an end portion introducible into and cooperative with the receptacle to define a substantially enclosed space containing the object to be washed. The fluid is introduced into and aspirated from the substantially enclosed space such that the object is movable in the fluid between the end portion and the receptacle.
    Type: Grant
    Filed: June 27, 1980
    Date of Patent: July 27, 1982
    Assignee: Beckman Instruments, Inc.
    Inventor: Kim S. Christensen
  • Patent number: 4228814
    Abstract: An apparatus for cleaning a test electrode in process control and chemical engineering. The apparatus includes a storage container from which a cleaning solution is intermittently drawn in by a pneumatically operating peristaltic pump. The pump supplies the cleaning solution to a nozzle which sprays the solution on the electrode.
    Type: Grant
    Filed: September 25, 1978
    Date of Patent: October 21, 1980
    Assignee: Zellweger Ltd.
    Inventors: Peter Luethi, Werner Steinmetz
  • Patent number: 3949771
    Abstract: A combined washer and aspirator device which is readily adapted to both aspirate and wash material from a solid body in a confined space. The washer-aspirator device is especially constructed to be utilized in conjunction with a hepatitis test wherein the device can remove and/or wash serum from a detection carrier such as a spherical ball. In a preferred embodiment, the device has a probe with an orifice for holding the ball in a suspended state as it is washed and aspirated.
    Type: Grant
    Filed: July 10, 1974
    Date of Patent: April 13, 1976
    Assignee: Abbott Laboratories
    Inventors: John Dennis Dodge, Robert Francis Koschalk