Pump Stop Control Means Requiring Manual Reset Patents (Class 417/33)
  • Patent number: 8731726
    Abstract: A method is provided for regulating fluid pump pressures by detecting an elevation differential between a fluid flow control device and the distal end of a fluid line in communication with the fluid flow control device. A fluid flow control device, for instance a peritoneal dialysis device, is at a first height, a distal end of a fluid line is at a second height, and a valved outlet, when open, affords communication between the fluid flow control device and the distal end of the fluid line. The elevation differential is correlatable with a pressure measurable during a calibration procedure provided as a part of the methodology.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: May 20, 2014
    Assignee: DEKA Products Limited Partnership
    Inventors: Larry B. Gray, Robert J. Bryant
  • Patent number: 8215931
    Abstract: A peristaltic pump is provided that is configured to facilitate safe maintenance of the pump. The pump can comprise a pump body having a pump head and a head cover and a safety switch mechanism. The safety switch mechanism can comprise one or more sensors that allow the pump to detect whether the head cover is in an open or closed position. When the pump is powered-on, the pump can be configured to enter a maintenance mode when the safety switch detects that the head cover is in the open position.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: July 10, 2012
    Assignee: Blue-White Industries, Ltd.
    Inventors: William M. McDowell, John Nguyen, Robert E Gledhill
  • Patent number: 8021125
    Abstract: A hermetic compressor includes a housing accommodating a motor and a compressing mechanism driven by the motor, refrigerating machine oil, which is pooled in the housing, for lubricating the compressing mechanism, refrigerant gas sealed into the housing and to be refrigerant forming a refrigerating cycle, and an oil surface sensor including a thermistor having a given length. A part of the oil surface sensor is impregnated into the refrigerating machine oil, and the sensor senses a temperature immediately after energizing the thermistor and a rate of change in temperature onward, so that a position of an oil surface is detected.
    Type: Grant
    Filed: July 19, 2005
    Date of Patent: September 20, 2011
    Assignee: Panasonic Corporation
    Inventor: Akio Uratani
  • Patent number: 7832989
    Abstract: The pump comprises a pump body, a control member, an elastic member, and blades. The pump body has a holding space, one or more pump inlets, and one or more pump outlets. The holding space, the pump inlets, and the pump outlets communicate with each other. The pump outlets communicate with a fuel outlet of the fuel storage device; while the pump inlets communicate with a fuel reservoir of the fuel storage device. The control member passes through the fuel storage device and is rotatably set in the holding space. The elastic member is set fixed on the pump body and connects with the control member. The blades are set in the holding space and connect with the control member. Thereby, no extra energy is needed for the pump to transport the fuel from the fuel reservoir to the fuel cell.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: November 16, 2010
    Assignee: Wistron Corporation
    Inventors: Shung-Huei Chang, Shu-Hao Liang
  • Publication number: 20080317603
    Abstract: A beverage system includes a pump that draws a set amount of a flavored concentrate into a mixing chamber for mixing with water to form a beverage. A locking ring attaches an adapter plate to a pump head. When the locking ring is in a locked position, a magnet of the locking ring is detected by a reed switch. If the locking ring rotates from the locked position, the reed switch does not detect the magnet, indicating that the locking ring, and therefore the pump head, is incorrectly or not completely installed. The controller then stops operation of the pump.
    Type: Application
    Filed: December 12, 2005
    Publication date: December 25, 2008
    Inventors: James J. Minard, Mark E. Bush
  • Patent number: 6398508
    Abstract: A control switch assembly for an air pump has a unidirectional valve mounted inside a port that is mounted together with a contact device on an actuation device. The actuation device has an extension slidably received in the actuation device and controllably connected to a knob. With the movement of the extension, a switch inside the contact device is able to selectively make an electrical connection and an actuating pin of the unidirectional valve is able to selectively open an airway inside the port. When the electrical connection of the switch is disconnected and the airway is opened by the movement of the actuating pin, the pressure above a diaphragm and inside the compressor is able to be released from the airway of the port so as to smooth the actuation of the compressor.
    Type: Grant
    Filed: December 27, 2000
    Date of Patent: June 4, 2002
    Inventor: Hsi-Kung Yang
  • Patent number: 6269493
    Abstract: A spa system which emp loys a removable drain cover. Removal of the drain cover will cause a proximity switch to turn off the circulation pump in the spa. In a preferred embodiment, the removable drain cover has a magnet attached to it and a magnetically actuable reed switch is attached to the drain body in proximity to the drain cover. Removal of the drain cover with the magnet attached will cause the reed switch to change state which opens a circuit controlling the operation of the spa pump thereby shutting down the spa circulation system. As a result, the spa circulation system cannot be operated without the drain cover in place. This reduces the likelihood of unwanted objects being drawn into the drain. Furthermore, should the spa user's hair become entangled in the drain cover or the drain pipe, the spa pump may be turned off by simply removing the drain cover thereby permitting the entangled user to be released.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: August 7, 2001
    Inventor: Edwin C. Sorensen
  • Patent number: 6053361
    Abstract: A dynamic displacement sensor for detecting an out-of-fluid condition in a liquid delivery system detects an increased amplitude of pump motion of a reciprocating air pump and provides an output signal upon detecting the increased amplitude motion. The detector includes a spring-mass combination supported within a housing such that the mass is movable along a defined axis of the housing, with the spring applying a restoring force to the mass when the mass moves away from its static position. The detector is attached to the pump with its defined axis aligned parallel with the pump axis. A sensor within the housing is triggered to change state when the mass is displaced by pump motion of a predetermined amplitude and frequency, thereby providing is an output signal indicating an out-of-fluid condition.
    Type: Grant
    Filed: August 31, 1998
    Date of Patent: April 25, 2000
    Assignee: Sealed Air Corporation (U.S.)
    Inventor: William M. Hills
  • Patent number: 5690476
    Abstract: A safety device for avoiding entrapment at a water reservoir drain by using a vacuum operated switch to interrupt power to the reservoir pump whenever a blockage occurs. In addition, a manual reset switch requires human intervention to re-activate the reservoir pump once the blockage condition is removed.
    Type: Grant
    Filed: October 25, 1996
    Date of Patent: November 25, 1997
    Inventor: Bernard J. Miller
  • Patent number: 5624237
    Abstract: A pump overload control assembly is for use with an electric motor driven pump in a water pumping system. The assembly includes a pump overload control device coupled to a fluid responsive switch, thereby forming a pump overload control circuit that interrupts the current flow to the motor in response to an overload of current flow to the motor. The pump overload control device includes a resettable overload protector and indicator mechanism that visually indicates when an overload has occurred and breaks the current flow through the circuit, for example, in response to heat generated from the overload current flow. The fluid responsive switch opens and closes the circuit in response to the fluid being pumped to an external source, for example, when the fluid pressure level falls below or rises above a predetermined pressure level.
    Type: Grant
    Filed: March 29, 1994
    Date of Patent: April 29, 1997
    Inventors: Russell E. Prescott, Perrin T. Prescott
  • Patent number: 5228485
    Abstract: A system for sensing fluid conduit occlusion that reacts to occlusion force applied by changing the state of a switch only if a predetermined minimum force has been applied through the conduit. The system includes a contact member arm that cooperates with a force sensitive plunger to engage or separate a pair of contact members in response to application of a minimum force to the plunger. The plunger is positioned within a sensor gap through which the conduit extends.
    Type: Grant
    Filed: April 24, 1990
    Date of Patent: July 20, 1993
    Assignee: Clintec Nutrition Co.
    Inventors: Robert Lewis, Thomas Lillegard
  • Patent number: 5091686
    Abstract: An operation control circuit for pump motor which is made such that driving condition of pump motor is checked and then when its driving condition is abnormal than driving of the pump motor can be stopped.The operation control circuit includes a pump environmental temperature detecting and heater energizing section, an overload and no-load detecting section, an overload driving count section, a no-load driving count section, latch sections, a reset section, a pump motor driving control section, and an operating state display section.According to the invention, using life time can be extended by preventing overload and no-load operation of pump motor, and freezing break down of pump motor can previously be prevented, and opening and closing noise of switch can be reduced.
    Type: Grant
    Filed: September 27, 1990
    Date of Patent: February 25, 1992
    Assignee: Gold Star Co., Ltd.
    Inventor: Woo S. Baik
  • Patent number: 4990057
    Abstract: The compressor controller includes a timing circuit for timing-out a detected fault in a compressor. Upon the fault existing for longer than a predetermined time limit, the controller removes power from the compressor. If the fault is corrected within the predetermined time limit, even momentarily, the timing process is discontinued and the controller continues to monitor the status of the compressor. The controller also includes a delay timer for delaying the re-energizing of the compressor after an interruption or loss of power occurs. The delay prevents short cycling of the compressor. The controller further includes a status display for indicating compressor functions, connections to an alarm which is initiated in the event of compressor failure, a switch for initiating a self test of the controller, and circuitry for a field applied current sensing relay.
    Type: Grant
    Filed: May 3, 1989
    Date of Patent: February 5, 1991
    Assignee: Johnson Service Company
    Inventor: Douglas J. Rollins
  • Patent number: 4969801
    Abstract: A fluid compression system includes a fluid compression device which pressurizes fluid. A pressure sensor senses pressure generated by the compression device. A control device indicates operating parameters and functions of the compression device, graphically displays the parameters and functions, sets limits of the parameters and controls the compression device in response to any of the parameters reaching a preset level of a corresponding function. A reverse rotation sensor determines when the compression device is operating in an incorrect direction by the initial pressure sensed by the pressure sensor after startup of the compression device, and in response, shuts off the compression device.
    Type: Grant
    Filed: November 6, 1989
    Date of Patent: November 13, 1990
    Assignee: Ingersoll-Rand Company
    Inventors: Robert K. Haseley, Paul A. Kirkpatrick, Jimmy L. Levan
  • Patent number: 4930550
    Abstract: The disclosed gaseous fuel torch apparatus is adapted for use in cutting, welding, heating or other such operations involving the heating, cutting, or fusing of either metallic or non-metallic materials. The apparatus includes a fueling module for supplying gaseous fuel to a torch at an elevated pressure from a relatively low pressure gaseous fuel source, such as a natural gas supply system for example. The fueling module also preferably includes a selectively-operable alternate system for supplying such compressed gaseous fuel for other applications, including the recharging of one or more storage vessels for example. The fueling module includes features by which its gaseous fuel discharge pressure can be infinitely varied and preselectively adjusted within the capabilities of the fueling module's compressor device.
    Type: Grant
    Filed: August 3, 1988
    Date of Patent: June 5, 1990
    Assignee: Fuel Concepts, Inc.
    Inventors: Kenneth S. Czerwinski, Eugene Gabany, Shanti S. Sharma, John W. Turko
  • Patent number: 4776766
    Abstract: A portable air pump assembly and detachable safety lamp, includes an air compressor; an air supply line supplying pressurized air from the air compressor to a tire; an electrical supply line supplying current to the air compressor; electrical contacts which connect the electrical supply line to the air compressor only when they are in a closed condition; a by-pass air supply line having one end with the air compressor; a pressure limit switch connected with the opposite end of the by-pass air supply line for automatically causing termination of the current supply to the air compressor in response to back pressure from the tire when the tire has been inflated to a desired air pressure; and a safety lamp detachably connected with the housing for providing a warning light and operable in a connected or detached position.
    Type: Grant
    Filed: August 14, 1987
    Date of Patent: October 11, 1988
    Assignee: Interdynamics, Inc.
    Inventor: Allan Brent
  • Patent number: 4776366
    Abstract: The disclosed gaseous fuel torch apparatus is adapted for use in cutting, welding, heating or other such operations involving the heating, cutting, or fusing of either metallic or non-metallic materials. The apparatus includes a fueling module for supplying gaseous fuel to a torch at an elevated pressure from a relatively low pressure gaseous fuel source, such as a natural gas supply system for example. The fueling module also preferably includes a selectively-operable alternate system for supplying such compressed gaseous fuel for other applications, including the recharging of one or more storage vessels for example. The fuelilng module includes features by which its gaseous fuel discharge pressure can be infinitely varied and preselectively adjusted within the capabilities of the fueling modules's compressor device.
    Type: Grant
    Filed: November 13, 1985
    Date of Patent: October 11, 1988
    Assignee: Michigan Consolidated Gas Company
    Inventors: Kenneth S. Czerwinski, Eugene Gabany, Shanti S. Sharma, John W. Turko
  • Patent number: 4735553
    Abstract: This invention relates to a straight peristaltic pump for conveying concrete or the like, comprising a straight hose adapted to be elastically flattened and extending between a base and pressure rollers; the rollers are mounted idly about transverse pins supported by rollers in abutment on runways; the pins connect two endless chains meshing with two pairs of toothed wheels. According to the invention, an inclined ramp of the runways connects their upstream circular part to their straight part and at least one counter gear supported by the frame meshes with each chain in the zone of connection of the ramp with said straight part.
    Type: Grant
    Filed: April 25, 1986
    Date of Patent: April 5, 1988
    Inventor: Lucien Vidal
  • Patent number: 4712648
    Abstract: Sensor circuitry is disclosed for a transducer (32) having a sensor or delta coil (66) for generating a magnetic flux through a path of movement of a magnetically permeable piston member (48), such that movement of the member (48) changes the return coupled flux linkage, which flux change indicates movement of the member (48), and having a reference coil (84) spaced sufficiently from the path of movement of the member (48) such that movement of the latter has less affect on return coupled flux linkage of the reference coil (84) than the delta coil (66). The coils (66 and 84) are connected (204) in respective parallel voltage dividers, and a half-wave rectified AC signal (diode CR11) is applied thereto.
    Type: Grant
    Filed: August 18, 1986
    Date of Patent: December 15, 1987
    Assignee: SSI Technologies, Inc.
    Inventors: Michael F. Mattes, Mark A. Dorland
  • Patent number: 4684327
    Abstract: An apparatus for monitoring the level of water being pumped into kitchen sinks, laundry tubs, and standpipes. The apparatus features a novel fluid levels ending unit operatively connected to a novel control unit for providing maintained termination of electrical power to the pump motor, should the water drainage system become clogged. As water flows through the nozzle of the sending unit, it operates to seal off the nozzle's air chamber inlet to trap and contain air therein. Therefore, should the drainage system become clogged, back-up water rises to a predetermined height within the air chamber. In so doing, the trapped air within the air chamber becomes compressed to a predetermined small value, for actuating the pressure switch. The actuated pressure switch in turn provides an electrical signal to the control unit for termination of water pump action.
    Type: Grant
    Filed: July 19, 1982
    Date of Patent: August 4, 1987
    Inventor: Joseph A. Gentiluomo
  • Patent number: 4614479
    Abstract: An adjustable automatically controlled pneumatic pump device includes an air pump, an electric motor adapted for being energized by a power source to drive the air pump, an air hose member with an exhaust port at one end, and an other end of the hose member connected to the air pump, a pressure gauge with a pressure setting pointer which can be adjusted in advance according to the predetermined air pressure desired and a pressure indicating pointer which is capable of contacting with the pressure setting pointer when the air pressure through the air hose reaches the predetermined air pressure, and an electric logic circuit device which is electrically associated with the motor and the pressure gauge and arranged in that the electric logic circuit can control the motor for pumping air into an enclosed space.
    Type: Grant
    Filed: October 7, 1985
    Date of Patent: September 30, 1986
    Inventor: Jackson Liu
  • Patent number: 4544328
    Abstract: A control device associated with a pneumatically-driven demand pump comprising a valve system which shuts off the gas which drives the pneumatic pump in response to a pressure-sensitive diaphragm which detects variations in pressure in the fluid output from the pump. The pressure-sensitive diaphragm serves the dual function of suppressing surges of liquid flow from the pump and stopping the pump when the liquid pressure drops below a predetermined minimum by closing a valve to shut off the gas.
    Type: Grant
    Filed: October 5, 1982
    Date of Patent: October 1, 1985
    Assignee: The Coca-Cola Company
    Inventor: William S. Credle, Jr.
  • Patent number: 4511063
    Abstract: An apparatus for maintaining a continuous supply of cementitious material such as stucco or plaster on the hawk of a workman skilled in applying said materials to surfaces with a trowel. Cementitious material stored in bulk in a hopper remote from the workplace is pumped from said hopper through hose to the hawk of the skilled workman. The flowing lines are free of restrictions or valves and the flow is metered at its source by means of a radio transmitter controlled by the workman applying the cementitious material. Said radio transmissions activate the flow according to the needs of the workman.
    Type: Grant
    Filed: June 6, 1983
    Date of Patent: April 16, 1985
    Assignee: The Hoddie Corporation, Inc.
    Inventors: Glenn C. Krause, Joseph Blounts
  • Patent number: 4505643
    Abstract: A circulating pump (B) pumps water between a swimming pool or other reservoir (A) and a filter or other circulated fluid receiving apparatus (C). A control circuit (D) intermittently operates the circulating pump. The operating circuit includes a first timer (32) and a cycle switch (34) which is cyclically closed to produce a pump signal for a first duration with a first periodicity. The pump signal starts a second timer (54) of a time controlled switch (52). The second timer holds the time controlled switch conductive for a preselected time period. The pump signal is conducted through a bypass switch (64), and the time actuated switch. When the pressure monitored by a pressure sensor (20) exceeds a preselected pressure, a low pressure switch (62) closes conducting the pump signal around the bypass and time controlled switches. A high pressure shutoff switch (66) conducts the pump signal to a power relay coil (72) unless a preselected high pressure is monitored.
    Type: Grant
    Filed: March 18, 1983
    Date of Patent: March 19, 1985
    Assignee: North Coast Systems, Inc.
    Inventors: Donald E. Millis, Rodger J. Grys
  • Patent number: 4286925
    Abstract: A control circuit for turning off the electrical power to the drive motor, which reciprocates a polished rod of a pump, when the pump has exhausted the supply of liquid in the well. Simultaneously measuring the polished rod load and rod position and turning off the power when the load is greater than or equal to a preset load and the position is equal to a preset position on the downstroke of the well. A first comparator measures the polished rod load relative to a preset load, and a second comparator measures the polished rod position relative to a preset point so that the power is shut off when the load is greater than or equal to the preset load and the position is equal to the preset point on the downstroke. A set of digital latches act to insure that the load is greater than the preset load for two consecutive strokes before the power is shut off.
    Type: Grant
    Filed: October 31, 1979
    Date of Patent: September 1, 1981
    Assignee: Delta-X Corporation
    Inventor: Thomas R. Standish
  • Patent number: 4239457
    Abstract: The finger is pivoted to the housing of a vibration switch mounted in a remote location. A cord attached to the finger leads to a convenient position. Pulling the cord resets the switch.
    Type: Grant
    Filed: June 28, 1979
    Date of Patent: December 16, 1980
    Inventor: R. C. Langford
  • Patent number: 4135859
    Abstract: An oil reservoir gland stuffing box employed to extend the service life of the packing by providing an oil reservoir to maintain essential lubrication is provided with an attached container which will receive the overflow of the oil reservoir should the packing begin to leak excessively threatening thereby to create a pollution problem. A predetermined overflow actuates a weight sensitive micro-switch wired to shut off the pumping unit and/or send a warning signal to a remote control station. The control switch incorporates a manual re-set provision to prevent the pumping unit from restarting until the well has been serviced.
    Type: Grant
    Filed: April 27, 1977
    Date of Patent: January 23, 1979
    Assignee: J. M. Huber Corporation
    Inventors: Forrest L. Carson, Joe F. Rives
  • Patent number: 4130382
    Abstract: A rain activated control system which shuts off an irrigation pump when a predetermined amount of rainfall occurs. A receptacle for catching rain is mounted in a manner to provide adjustment of the distance between its bottom and a pair of electrodes which extend into the receptacle. When rain is collected in the receptacle in sufficient quantity to immerse the electrodes, a control circuit is completed to operate a relay. The energized relay then activates the shut down system of the engine or motor which drives the irrigation pump. Ater a time delay sufficient to assure complete shut down of the pump, a timing circuit causes deenergization of the relay and closes a reset circuit. When the irrigation pump is to be restarted, the rain receptacle is emptied and a reset switch is opened to reset the control circuitry.
    Type: Grant
    Filed: January 10, 1977
    Date of Patent: December 19, 1978
    Inventor: John J. Bode
  • Patent number: 4080105
    Abstract: An inflator for tires having a housing adapted to be hand held, with air compressor means including an electric motor mounted in the housing for supplying air under pressure to a tire. Adjustable valve means is mounted on the housing and operatively connected to the compressor means for selecting a predetermined air pressure for deliver to the tire, the valve means movable between open and closed positions. A hose is operatively connected to the valve means to provide air under pressure for delivery to the tire from the compressor means in the open position of the valve means, and switch means is mounted in the housing and coupled to the motor for supplying electrical energy to the motor in the energized position of the switch means.
    Type: Grant
    Filed: December 15, 1976
    Date of Patent: March 21, 1978
    Inventor: Edwin E. Connell