Patents Assigned to Pulsafeeder, Inc.
  • Publication number: 20150190766
    Abstract: A static mixing apparatus may include a first portion having a height; a plurality of projections extending from proximate an outside edge of the first portion towards the centerline of the first portion at about a right angle, each projection having a first side at about a right angle to a second side, the first and second sides converging at an apex, the plurality of projections arranged to form an opening between the sides of the projections, and the opening having an inlet side and an outlet side. The static mixing apparatus may be substantially cylindrical.
    Type: Application
    Filed: March 27, 2014
    Publication date: July 9, 2015
    Applicant: PULSAFEEDER, INC.
    Inventor: Charles Garner
  • Patent number: 8708678
    Abstract: A nonmetallic pump with a gear pump assembly having an adapter spool mounted to an electric motor. The pump assembly is designed to reduce manufacturing costs and to provide access for many service and maintenance tasks to be performed without breaking any of the pipe connections. The pump assembly also includes a splined shaft system and a lubricating fluid circulation system with spiral grooves located inside a pair of bearings disposed on opposite sides of the gear flights. The assembly also includes a replaceable precision liner that surrounds the gear flights to maintain a tight tolerance for optimal performance of the pump. Also, an O-ring disposed inside the front cover of the assembly provides for operation of the pump over a wide temperature variation with relatively loose manufacturing tolerances.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: April 29, 2014
    Assignee: Pulsafeeder, Inc.
    Inventors: Stephen B. Muscarella, Philip T. Pascoe
  • Patent number: 8322994
    Abstract: A diaphragm metering pump suitable for metering an effervescent gas. The pump has a pump head with a product chamber having an inlet end with a one-way inlet valve and an outlet end with a one-way outlet valve. A displaceable diaphragm member defines a boundary of the product chamber. The diaphragm member is capable of being reciprocated to cause pumping displacements. A discharge side is disposed downstream from the outlet valve. A passageway is disposed in fluid communication between the discharge side and the product chamber. A valve is disposed in the passageway. The valve is opened intermittently to allow liquid to re-enter the product chamber in an amount effective to purge gas from the product chamber to prevent loss of prime.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: December 4, 2012
    Assignee: Pulsafeeder, Inc.
    Inventors: Cordell E. Claude, Stephen B. Muscarella, Patrick F. Miller
  • Patent number: 7896021
    Abstract: A system for quickly removing and installing check valve parts without disturbing system piping attached to a pump. The system includes a first adapter attached to the outlet of the pump head. The first adapter includes a valve seat and a housing with a side wall having external threads. A second adapter includes a hollow body with a space for a check valve. The body has an opening in the side wall for inserting the check valve. The second adapter fits over the first adapter and the adapters are attached by means of a collar. Tightening the collar onto the threads on the first adapter causes the check valve to be held firmly between the valve seat and the top wall of the second adapter.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: March 1, 2011
    Assignee: Pulsafeeder, Inc.
    Inventor: Cordell E. Claude
  • Patent number: 7806673
    Abstract: A nonmetallic pump with a gear pump assembly having an adapter spool mounted to an electric motor. The pump assembly is designed to reduce manufacturing costs and to provide access for many service and maintenance tasks to be performed without breaking any of the pipe connections. The pump assembly also includes a splined shaft system and a lubricating fluid circulation system with spiral grooves located inside a pair of bearings disposed on opposite sides of the gear flights. The assembly also includes a replaceable precision liner that surrounds the gear flights to maintain a tight tolerance for optimal performance of the pump. Also, an O-ring disposed inside the front cover of the assembly provides for operation of the pump over a wide temperature variation with relatively loose manufacturing tolerances.
    Type: Grant
    Filed: August 1, 2005
    Date of Patent: October 5, 2010
    Assignee: Pulsafeeder, Inc.
    Inventors: Stephen B. Muscarella, Philip T. Pascoe
  • Patent number: 7740399
    Abstract: A feeder system comprising a hopper for holding dry chemical. A feed tube extends from the hopper and is for delivering dry chemical to a mixing tank. A first solenoid actuator is provided for controlling the opening and closing of a first solenoid actuated gate that is disposed in the feed tube. A second solenoid actuator is provided for controlling the opening and closing of a downstream second solenoid actuated gate disposed in the feed tube. A central controller is provided that is in communication with and controls the system components including the introduction of the dry chemical and process water into the mixing tank. The central controller controls a metering pump that pumps chemical mixed solution out of the mixing tank.
    Type: Grant
    Filed: July 5, 2007
    Date of Patent: June 22, 2010
    Assignee: Pulsafeeder, Inc.
    Inventors: David G. Simmons, Ashok Vellaiah Retnaswamy
  • Patent number: 7175397
    Abstract: A diaphragm metering pump suitable for metering an effervescent gas. The pump has a pump head with a product chamber having an inlet end with a one-way inlet valve and an outlet end with a one-way outlet valve. A displaceable diaphragm member defines a boundary of the product chamber. The diaphragm member is capable of being reciprocated to cause pumping displacements. A discharge side is disposed downstream from the outlet valve. A passageway is disposed in fluid communication between the discharge side and the product chamber. A valve is disposed in the passageway. The valve is opened intermittently to allow liquid to re-enter the product chamber in an amount effective to purge gas from the product chamber to prevent loss of prime.
    Type: Grant
    Filed: April 10, 2003
    Date of Patent: February 13, 2007
    Assignee: Pulsafeeder, Inc.
    Inventors: Cordell E. Claude, Stephen B. Muscarella, Patrick F. Miller
  • Patent number: 6930486
    Abstract: A conductivity probe having a modular design. A probe body has a distal end and a proximal end. The distal end includes a recessed portion for providing a seat for an O-ring that seals an electrode tip assembly. The probe body also includes a set of internal threads for engaging with cooperating threads disposed on the electrode tip assembly. The distal end of the body terminates in a bottom wall having an opening leading to a connection pipe attached to a junction box. The exterior of the probe body includes a stepped down profile of varying constant diameters with a side port formed in the probe body for receiving a temperature compensation probe. The probe body includes a set of external threads and wrench flats for installing the probe into a boiler conduit. The design is completely modular with minimal assembly required. The probe body is machined easily and features hard stops for trouble-free assembly. Also, there is no potting of the electrical components required.
    Type: Grant
    Filed: August 7, 2003
    Date of Patent: August 16, 2005
    Assignee: Pulsafeeder, Inc.
    Inventors: Stephen B. Muscarella, Philip T. Pascoe
  • Patent number: 6222371
    Abstract: A portable, hand-held fluid tester for testing and analyzing process fluids is provided with a volume controlled fluid reservoir. The test fluid reservoir is connected by a spillway to an overflow reservoir to provide more consistent and accurate fluid volumes for measurement. Improved mounting of electrodes in the test reservoir and connection to a testing printed circuit substrate provides for ease of assembly. A special temperature probe arrangement is also provided in a preferred embodiment.
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: April 24, 2001
    Assignee: Pulsafeeder, Inc.
    Inventor: Francis J. Snyder
  • Patent number: 6139286
    Abstract: A new and improved automatic venting back pressure valve is provided in a valve body including a back pressure chamber having a fluid inlet and a fluid outlet. A spring loaded back pressure member covers the fluid outlet which is movable between a normally closed position wherein the back pressure member seals off the fluid outlet and an open position wherein the back pressure member is displaced from the fluid outlet to permit fluid to flow through the back pressure chamber from fluid inlet to fluid outlet in response to increased fluid pressure in the back pressure chamber. A gas by-pass orifice is disposed in an upper portion of the back pressure chamber which connects the back pressure chamber to a downstream portion of the fluid outlet. The gas by-pass orifice has a diametrical dimension selected to permit flow of gases through the orifice but to substantially not permit flow of liquids through the orifice.
    Type: Grant
    Filed: September 28, 1998
    Date of Patent: October 31, 2000
    Assignee: Pulsafeeder, Inc.
    Inventor: Stephen B. Muscarella
  • Patent number: 5860793
    Abstract: A new and improved diaphragm metering pump is provided with a modular removable drive assembly. The removable drive assembly provides rotation to an eccentric shaft within the pump and is disposed outside rotary bearings for the eccentric shaft and outside sealing elements containing hydraulic fluid in the pump housing. In a preferred embodiment, a readily accessible mechanically activated hydraulic refill valve cartridge is provided to hydraulically balance the diaphragm. In a preferred embodiment, a push to prime air bleeder valve is provided permitting automatic priming of the hydraulic system without requiring disconnection of any valves. The pump is designed to interchangeably receive a number of diaphragm assemblies including an improved leak detection diaphragm and a double-sided leak detection diaphragm. In a preferred embodiment, a diagnostics window is provided permitting visual inspection of the operating condition of various valves connected to the hydraulic system.
    Type: Grant
    Filed: April 30, 1996
    Date of Patent: January 19, 1999
    Assignee: Pulsafeeder, Inc.
    Inventors: Stephen B. Muscarella, Philip T. Pascoe, Francis J. Snyder
  • Patent number: 5676531
    Abstract: A new and improved liquid metering pump for use in pumping sterile fluids and foodstuffs includes a separable autoclavable pump head assembly. The diaphragm-containing pump head may be preassembled as a unit and sterilized to provide a pump head having sterile product contact surfaces. The pre-sterilized pump head may be mounted and connected to an electronic solenoid metering pump and used for delivering fluids in food preparation, medical and pharmaceutical applications.
    Type: Grant
    Filed: March 21, 1996
    Date of Patent: October 14, 1997
    Assignee: Pulsafeeder, Inc.
    Inventors: Stephen B. Muscarella, Robert Kenneth Pfleger, Philip T. Pascoe
  • Patent number: 5667368
    Abstract: A new and improved diaphragm metering pump is provided with a modular removable drive assembly. The removable drive assembly provides rotation to an eccentric shaft within the pump and is disposed outside rotary bearings for the eccentric shaft and outside sealing elements containing hydraulic fluid in the pump housing. In a preferred embodiment, a readily accessible mechanically activated hydraulic refill valve cartridge is provided to hydraulically balance the diaphragm. In a preferred embodiment, a push to prime air bleeder valve is provided permitting automatic priming of the hydraulic system without requiring disconnection of any valves. The pump is designed to interchangeably receive a number of diaphragm assemblies including an improved leak detection diaphragm and a double-sided leak detection diaphragm. In a preferred embodiment, a diagnostics window is provided permitting visual inspection of the operating condition of various valves connected to the hydraulic system.
    Type: Grant
    Filed: April 30, 1996
    Date of Patent: September 16, 1997
    Assignee: Pulsafeeder, Inc.
    Inventors: Craig L. Augustyn, Francis J. Snyder
  • Patent number: 5647733
    Abstract: A new and improved diaphragm metering pump is provided with a modular removable drive assembly. The removable drive assembly provides rotation to an eccentric shaft within the pump and is disposed outside rotary bearings for the eccentric shaft and outside sealing elements containing hydraulic fluid in the pump housing. In a preferred embodiment, a readily accessible mechanically activated hydraulic refill valve cartridge is provided to hydraulically balance the diaphragm. In a preferred embodiment, a push to prime air bleeder valve is provided permitting automatic priming of the hydraulic system without requiring disconnection of any valves. The pump is designed to interchangeably receive a number of diaphragm assemblies including an improved leak detection diaphragm and a double-sided leak detection diaphragm. In a preferred embodiment, a diagnostics window is provided permitting visual inspection of the operating condition of various valves connected to the hydraulic system.
    Type: Grant
    Filed: December 1, 1995
    Date of Patent: July 15, 1997
    Assignee: Pulsafeeder Inc.
    Inventors: Craig L. Augustyn, Richard Giannetti, Travis L. James, Stephen B. Muscarella, Philip T. Pascoe, Francis J. Snyder, Erik C. VanBork
  • Patent number: 5398711
    Abstract: A modular control is provided for sensing characteristics of a fluid and controlling the dispensing of additives into said fluid. The control is contained in a box-like housing having an openable wall which is sealable to a remainder of said housing in a water-tight manner. A plurality of printed circuit boards can be mounted in an interior of said housing. A control circuit is carried on at least one printed circuit board mounted in the housing including a microprocessor controller. At least one probe is provided for immersion in the fluid to detect a characteristic of the fluid. At least one output device is provided for dispensing an additive into the fluid. A signal processing circuit is carried on a printed circuit board mounted in the housing for processing a signal received from the probe. An output control circuit is carried on a printed circuit board mounted in the housing for controlling the output device. A display is mounted on one of the housing walls.
    Type: Grant
    Filed: June 16, 1994
    Date of Patent: March 21, 1995
    Assignee: Pulsafeeder, Inc.
    Inventor: William E. Ardrey, Jr.
  • Patent number: 5056036
    Abstract: A computer controlled metering pump. The displacement of a metering pump is accurately monitored using a position sensor connected to a piston. A control computer receives the sensor signal as well as a desired pumping volume rate. The pumped volume is continuously monitored by the computer as a function of the piston displacement, and compared with the desired rate. The metering pump is controlled to bring the pumped volume rate into agreement with the desired volumetric pumping rate.
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: October 8, 1991
    Assignee: Pulsafeeder, Inc.
    Inventor: Erik C. Van Bork
  • Patent number: 4781535
    Abstract: Apparatus for monitoring the diaphragm integrity in a diaphragm pump. A single continuous circuit trace is supported on a pump diaphragm. An electrical circuit is connected to the continuous circuit trace for measuring both the continuity and a potential ground fault condition between the circuit trace and pumping liquid. The circuit trace is formed in a configuration which resists the effects of strain induced by continuous flexing of the diaphragm.
    Type: Grant
    Filed: November 13, 1987
    Date of Patent: November 1, 1988
    Assignee: Pulsafeeder, Inc.
    Inventors: James J. Frawley, Richard L. Mearns