Patents Examined by Richard A. Bertsch
  • Patent number: 5540561
    Abstract: An enclosure is provided for protecting a bag containing fluid used in connection with a pump for pumping the fluid to the patient. The pump closes off the opening into the enclosure. A first end of the pump is positioned within the enclosure adjacent to a retaining lip. A latch structure latches a second end of the pump to the enclosure to mount the pump to the enclosure. A bag spike chamber is provided for receiving a bag spike used to connect the pump to the bag. A platform is provided for supporting the bag above the bag spike chamber. A ridge on the front of the control module of the pump engages the enclosure during mounting of the pump to the enclosure. A ridge on the back of the control module fits into the enclosure. The enclosure further includes a pressure plate support surface for engaging a reciprocally shaped pressure plate to facilitate a mechanical fit of the pressure plate to the enclosure.
    Type: Grant
    Filed: October 28, 1993
    Date of Patent: July 30, 1996
    Assignee: SIMS Deltec, Inc.
    Inventor: Jay G. Johnson
  • Patent number: 5540566
    Abstract: A pump comprising a pump body having a control valve for controlling working fluid flow from the pump body to an actuator through a joint. The joint is connected mechanically to the pump body through a washer made of a material different from that of the pump body. The washer has a side surface held in contact with the pump body at a galvanic junction. The pump also includes an annular seal member provided to keep the junction from exposure to the environment.
    Type: Grant
    Filed: August 10, 1993
    Date of Patent: July 30, 1996
    Assignee: Unista Jecs Corporation
    Inventors: Kazuyoshi Ishizaki, Masateru Yamamuro, Atsushi Ishizuka, Shouji Ohya, Miyoko Hamao
  • Patent number: 5538399
    Abstract: A method is provided for protecting a bag containing fluid used in connection with a pump for pumping the fluid to the patient. The pump closes off the opening into an enclosure. A first end of the pump is positioned within the enclosure adjacent to a retaining lip. A latch structure latches a second end of the pump to the enclosure to mount the pump to the enclosure. A bag spike chamber is provided for receiving a bag spike used to connect the pump to the bag. A platform is provided for supporting the bag above the bag spike chamber. A ridge on the front of the control module of the pump engages the enclosure during mounting of the pump to the enclosure. A ridge on the back of the control module fits into the enclosure. The enclosure further includes a pressure plate support surface for engaging a reciprocally shaped pressure plate to facilitate a mechanical fit of the pressure plate to the enclosure.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: July 23, 1996
    Assignee: SIMS Deltec, Inc.
    Inventor: Jay G. Johnson
  • Patent number: 5536098
    Abstract: A bearing assembly for a wheel hub/constant velocity universal joint unit which includes a double-row bearing which has a one-piece outer bearing ring to be connected to a wheel carrier. The bearing inner bearing rings are directly formed by the wheel hub, on the one hand, and by the outer part of the constant velocity universal joint, on the other hand. The parts non-rotatingly engage one another in a form-fitting way and are axially tensioned relative to one another, with the wheel hub, on the one hand, and the outer part of the constant velocity universal joint, on the other hand, including form-fitting engaging mechanism, which are adapted to one another and which enable the two parts to be connected in only one single angular position relative to one another.
    Type: Grant
    Filed: June 10, 1993
    Date of Patent: July 16, 1996
    Assignee: Lohr & Bromkamp GmbH
    Inventor: Peter Schwarzler
  • Patent number: 5536150
    Abstract: This pumping unit stroke reversal invention can be employed in various embodiments, and uses one or more resilient hydraulic-pneumatic accumulators which slow and stop each stoke, storing the kinetic energy, and returning this energy to begin and accelerate the next succeeding stroke. This storing and re-application of energy greatly increases the efficiency of any pumping unit which incorporates the stroke reversal system of this invention. Counterbalance force is mechanical, hydraulic-pneumatic, or a combination of the two, and is applied in linear or rotary fashion. Drive power is applied during the larger central portion of each stroke, either mechanically or hydraulicly, and in either linear or rotary fashion, and the drive mechanism is then passive during the remaining, reversal portions of the stroke cycle.
    Type: Grant
    Filed: July 28, 1994
    Date of Patent: July 16, 1996
    Inventor: Joe W. Tucker
  • Patent number: 5533866
    Abstract: A pressurized air system controls air pressure in air reservoirs that deliver compressed air to air-actuated components in a vehicle. An air compressor supplies compressed air to air reservoirs which deliver compressed air to air-actuated components. A control system measures the air pressure in the air reservoirs by using at least one electric switch. Each switch is connected to an air reservoir and generates an electric signal to an electrically controlled valve indicative of the measured air pressure in the corresponding air reservoir. The electrically controlled valve is connected to an air compressor. The electrically controlled valve moves between a first position causing the air compressor to compress air and to supply compressed air to the air reservoirs and a second position causing the air compressor to stop compressing air, responsive to the received electronic signal.
    Type: Grant
    Filed: June 6, 1994
    Date of Patent: July 9, 1996
    Assignee: Air-Lite Transport, Inc.
    Inventor: Michael R. Malecha
  • Patent number: 5531571
    Abstract: A regulating device for screw-type compressors, which contain a compressor dement (1), an electrical motor (2) to drive the compressor element (1), a minimum pressure valve (4) which is mounted on the outlet (5) of the compressor element (1) and a vessel (6) which is mounted between the compressor element (1) and the minimum pressure valve (4), includes a controller which causes the motor (2) to turn at a frequency-regulated rotational speed at an almost constant pressure in the vessel (6), and a non-return valve (12) which is mounted on the inlet (10) of the compressor element (1) to aid in starting and stopping the motor.
    Type: Grant
    Filed: April 14, 1994
    Date of Patent: July 2, 1996
    Assignee: Atlas Copco Airpower, naamloze vennootschap
    Inventor: Christiaan Van Dyck
  • Patent number: 5529463
    Abstract: A pumping apparatus which is particularly useful in catheterization procedures has two pumps supported in a parallel arrangement. The pumps are engaged by an actuating rod connected to a power cylinder which reciprocates longitudinally between the two pumps. The two pumps are held within the housing such that only the plunger element of one pump is capable of movement in response to the actuating member while only the barrel element of the other pump is capable of movement in response to the actuating member. By way of this linkage, during movement of the actuating rod, one pump performs a pumping stroke while the other pump performs a suction stroke.
    Type: Grant
    Filed: April 19, 1994
    Date of Patent: June 25, 1996
    Assignee: Cordis Corporation
    Inventors: James Layer, Andrea Slater, Karl Weissinger
  • Patent number: 5527161
    Abstract: A liquid pumping and filtering system for use in dispensing materials such as photoresist used to make semiconductors. A positive displacement diaphragm pump is used to draw source liquid from a source bottle. A pump valve is activated to direct fluid from the pump to a main dispensing line which includes a filter. A suckback line bridges the dispense line. The suckback line and the dispense line are each connected to a final dispense line, and the flow of liquid is controlled by a filter valve, which alternative causes fluid to flow through the suckback line or the dispense line, depending upon the mode of operation of the system. The use of an independent suckback line allows the quick withdrawal of fluid away from the dispense nozzle in the final dispense line. As a result, liquid in the dispensing line on opposite sides of the filter is generally maintained at constant pressure.
    Type: Grant
    Filed: August 3, 1994
    Date of Patent: June 18, 1996
    Assignee: Cybor Corporation
    Inventors: David C. Bailey, Ian R. Raphael
  • Patent number: 5527156
    Abstract: An apparatus for and a method of controlling the engine and pumps of hydraulic construction equipment capable of achieving automation of the hydraulic construction equipment by controlling the oil quantity fed to solenoid controlled proportional valves such that it is proportional to the manipulation amount of a manipulation command unit through a computation performed by a controller on the basis of engine RPM data from an engine RPM detection unit and pump delivery pressure variation data from a pump delivery pressure detection units so that the suction horse power of each of the pumps corresponds to the maximum output horse power of the engine and by controlling the oil quantity fed to the hydraulic cylinders 105a and 105b by oil quantity control valves such that it corresponds to the manipulation amount and manipulation ratio from the manipulation command unit.
    Type: Grant
    Filed: November 4, 1994
    Date of Patent: June 18, 1996
    Assignee: Samsung Heavy Industry Co., Ltd.
    Inventor: Myung-Hoon Song
  • Patent number: 5527164
    Abstract: A fluid valve device for on-off control of fluid flow through a passage extending between two fluid ports (12, 15) and including a valve seat (17A) comprises a hollow valve member (21) which is movable into and out of sealing engagement with the valve seat and defines a valve chamber (20). The valve chamber (20) communicates with one of the fluid ports (15) through the valve seat (17A) and is associated with a valve member actuating device (A) which translates the pressure of the fluid received in the valve chamber (20) from an inlet (12/14) for the fluid flow into a force acting on the valve member to displace it relative to the valve seat (17A). The valve member actuating device in one embodiment includes a thrust surface (A) on the valve member (21) which is directed away from the valve seat and forms part of the wall of the valve chamber (20). A second thrust surface (C) on the valve member (21) is directed oppositely and defines a chamber (V) which is isolated from the valve chamber and the flow passage.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: June 18, 1996
    Assignee: Humanteknik AB
    Inventor: Stig Lundback
  • Patent number: 5527163
    Abstract: A holding flange (5) is detachably connected on its bottom to a coupling part (7) within a fuel chamber (2). A flexible hose (8) leading to a sucking-jet pump (9) and a spring action arm (10) for holding the sucking-jet pump (9) down on the bottom of the fuel chamber (2) are fastened to said coupling part (7). For mounting and removal, the coupling part (7) can be separated from the holding flange (5) together with the structural parts fastened to it.
    Type: Grant
    Filed: December 9, 1994
    Date of Patent: June 18, 1996
    Assignees: VDO Adolf Schindling AG, Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Karl-Heinz Werkmann, Frank Reiter, Burkhard Dasbach, Manfred Bigalke
  • Patent number: 5527158
    Abstract: A thermally responsive valve assembly (134) for scroll motorcompressor high temperature protection, which causes a high-side to low-side leak when excessive discharge gas temperatures are encountered, thereby causing the motor protector (35) to trip and de-energize the motor. The valve assembly (134) includes means motor ducting (200) the excessive temperature discharge gas to the lower portion of the motor/compressor shell (10) to the motor to circulate the high temperature gas throughout the motor cavity. The excessive temperature discharge gas heats the motor stator (20) and windings (32) which will in turn cause the motor protector (35) to trip and de-energize the motor.
    Type: Grant
    Filed: December 9, 1994
    Date of Patent: June 18, 1996
    Assignee: Copeland Corporation
    Inventors: Jeffery D. Ramsey, Jean-Luc Caillat, Sunil S. Kulkarni
  • Patent number: 5527162
    Abstract: An apparatus for drawing off dust-laden gases, especially in the art of dental technique, has a ring channel (15) which can be loaded with compressed air. The airstream which is provided by a compressed-air nozzle (26) performs an arcuate movement in the ring channel (15), whereby dust-laden gases are drawn in through an annular slit (22) and conveyed to an outlet channel (13). The apparatus is suitable for drawing off gases from containers. The apparatus serves for drawing off dust-laden air which is released when mixing solid substances, for example dental investment material, in a container (10).
    Type: Grant
    Filed: April 26, 1995
    Date of Patent: June 18, 1996
    Assignee: BEGO Bremer Goldschlagerei Wilh. Herbst GmbH & Co.
    Inventors: Hans-Werner Gundlach, Friedrich Jacob
  • Patent number: 5527157
    Abstract: Evaporative cooler apparatus includes two pumps, a primary pump which pumps water to an evaporative medium and a secondary pump for pumping water from the bottom of the cooler to drain the cooler. The secondary, or drain pump includes a timer so that it is only on to drain water from the bottom of the cooler for a predetermined time, and after a predetermined number of hours of operation of the primary pump. That is, there is a direct relationship between the operation of the cooler apparatus as evidenced by the primary pump, and the draining of the water at the bottom of the cooler by the secondary, or drain pump. The efficiency of the pumps is increased to allow them to pump with a very low water level without cavitation problems by virtue of an impeller design which includes vanes on the bottom of the impeller disk and vanes on top of an impeller disk.
    Type: Grant
    Filed: January 28, 1994
    Date of Patent: June 18, 1996
    Assignee: Phoenix Manufacturing, Inc.
    Inventors: Harold O. Collins, James J. Hennessy, Gilbert Mancillas
  • Patent number: 5525040
    Abstract: A controller for controlling the pumping unit for an oil well comprises a housing having a first and a second tip for placement in a flow of oil between the wellbore to holding tanks; means for generating a substantially constant power; a constant power heater in the first tip connected to the means for generating, for radiating a substantially constant heat; means for determining the temperature at each the first and second tips and for generating a digital signal indicative of the temperature of the first and second tips; supervising means for controlling the means for determining, processing the digital signal for determining a rolling average signal, and generating a control signal therefrom which is independent of ambient temperature of the oil flow; and means for switching the pumping unit on or off, according to the control signal. The controller further comprises means for calibrating the means for determining. The constant power heater is preferably a FET connected in series with a resistor.
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: June 11, 1996
    Assignee: B&B Financial Planning Inc.
    Inventors: Peter R. Andreae, Mark A. Nowicki, Timothy M. Lownie, Stuart F. Bevan
  • Patent number: 5525041
    Abstract: A pump comprising a chamber and a transducer. The chamber receives a medium to be pumped. The chamber has first and second ends and an inlet and an outlet. The transducer is disposed at the first end of the chamber and provides an energy wave within the medium which imparts momentum to it whereby it passes through the outlet by the momentum.
    Type: Grant
    Filed: July 14, 1994
    Date of Patent: June 11, 1996
    Inventor: David Deak
  • Patent number: 5525044
    Abstract: There is presented a gas compressor including a housing defining adjacent first and second chambers in axial alignment, a rod extending through the first chamber and into the second chamber, a tubular projection extending from a first end of the housing into the second chamber, a cylindrically-shaped end portion fixed to the rod and disposed slidably upon the projection and within the second chamber, a piston fixed to the rod and slidably disposed within the first chamber, and conduits for admitting gas to the first chamber, transferring gas from one compression stage to another, and discharging compressed gas from the housing.
    Type: Grant
    Filed: April 27, 1995
    Date of Patent: June 11, 1996
    Assignee: Thermo Power Corporation
    Inventor: Tze-Ning Chen
  • Patent number: 5525039
    Abstract: A pump assembly is disclosed having a housing including a suction inlet and a discharge outlet and a pump assembly contained within the housing. The pump assembly includes a pumping stage and a driving stage, with the pumping stage including an impeller assembly constructed and arranged to impart regenerative action flow to the fluid being pumped. The driving stage includes a magnetic drive comprised of a drive magnet and a driven magnet associated with a shaft operatively coupled to the impeller assembly, with the driven magnet positioned with in a sealed containment vessel. A portion of the pumped liquid is circulated as a coolant through the containment vessel and returned to the pumping stage. A control assembly is provided to monitor the differential temperature of the magnetic drive and the bearing structure within the magnetic drive to control operation of the pump assembly.
    Type: Grant
    Filed: July 21, 1993
    Date of Patent: June 11, 1996
    Assignee: Roy E. Roth Company
    Inventor: Leonard J. Sieghartner
  • Patent number: 5524980
    Abstract: A medicine cabinet organizing insert comprised of a rectangular frame having a side wall, top wall and bottom walls with one side of the frame being open. A vertical divider in the rectangular frame divides the organizing insert into two vertical compartments. One compartment divided into approximately 60% of the organizer has a plurality of adjustable shelves. Two of the shelves have specially designed slots for storing particular toilet articles. The open side of the rectangular frame has scored areas to remove a portion of the frame for fitting narrower designed existing medicine cabinets. The medicine cabinet organizer is easily installed in existing medicine cabinets to replace existing shelves. With the shelves removed, the organizer may be simply placed in the opened cavity of existing medicine cabinets and secured with double faced adhesive tape or installed with mounting screws.
    Type: Grant
    Filed: July 15, 1993
    Date of Patent: June 11, 1996
    Assignee: RX For Organization
    Inventors: Terry A. Carter, Janet L. Carter, Steven V. Mishkin, Carlyn H. Mishkin