With Side Wall Filling Opening Patents (Class 222/388)
  • Patent number: 11859763
    Abstract: A container includes a pouch formed of a film material and in which a lubricant composition with a worked penetration of 300 to 450 is filled and sealed, and a spout fixed to the pouch.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: January 2, 2024
    Assignee: Nabtesco Corporation
    Inventors: Koji Nakamura, Hiroyuki Miyoshi
  • Patent number: 8978938
    Abstract: A portable chargeable spray bottle is disclosed comprising a body comprising an upper part and a lower part; a spray nozzle assembly equipped on the upper part, and a liquid charging structure placed at the bottom part. It is further comprises an exhaust structure comprising an exhaust hole penetrating the body, whereby exhaust air flow can escape via the exhaust hole to outside the bottle.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: March 17, 2015
    Assignee: Dongguan Yixin Magnetic Disk Co., Ltd.
    Inventors: Yi Ming Hui, Zhi Wang
  • Patent number: 8770447
    Abstract: A sterile lubricant dispenser for dispensing calibrated amount of a sterile lubricant having a viscosity greater than that of 150 P.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: July 8, 2014
    Inventor: Janie Marshall
  • Patent number: 8511519
    Abstract: The apparatus of the present invention is a pet pantry having storage containers for pet-related equipment, accessories, medication, or other items, and also pet food storage and dispensing. The food dispensing mechanism allows for measured food dispensing, providing volume adjustment mechanisms to dispense a desired quantity of pet food. The food dispensing mechanism is a single movement handle or button dispensing the desired quantity of food. The pet pantry is also modular allowing for adjustments to a pet owner's specification.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: August 20, 2013
    Inventors: Michael S. Mahle, Craig Rubino
  • Publication number: 20100301069
    Abstract: In general, a piston-type pump includes a wash flow path that allows a wash liquid such as water to pass through to provide washing and cleaning as the pump operates. The pump may be used in precision liquid dispensing systems and particularly with liquid solutions that have a tendency to precipitate solid particulate. By washing a portion of the pump piston, the liquid solution being dispensed and any solid particulates may be carried away and removed from the pump.
    Type: Application
    Filed: May 28, 2010
    Publication date: December 2, 2010
    Applicant: IVEK CORPORATION
    Inventor: Douglas S. Bensley
  • Patent number: 7678089
    Abstract: An ophthalmic delivery device includes a body defining a fluid reservoir and a pump in fluid communication with the reservoir. The delivery device also includes a nozzle that includes a dosage chamber for holding a dosage of fluid, a valve seat, and a valve cover. The valve cover extends about the valve seat and forms an interface therebetween and the valve seat includes an outlet aperture. The interface is in fluid communication with the outlet aperture and the dosage chamber, and at least part of the valve cover is movable between (i) a closed position with the valve cover engaging the valve seat to close the interface and form a fluid-tight seal therebetween, and (ii) an open position with at least part of the valve cover spaced away from the valve seat in response to fluid flowing through the outlet aperture at a pressure greater than a valve opening pressure to allow the passage of pressurized fluid therebetween.
    Type: Grant
    Filed: November 15, 2004
    Date of Patent: March 16, 2010
    Assignee: Medical Instill Technologies, Inc.
    Inventors: Daniel Py, Julian V. Chan, Jeffrey M. Atwood
  • Patent number: 7673775
    Abstract: An apparatus for dispensing and mixing fluids from multiple cartridges into a removable container, based on the user input through the provided interface. The user interface allows viewing and adjusting of the mix to be dispensed prior to the actual dispensing. The apparatus is capable of dispensing fluids that have a wide range of viscosities, and that are sticky or that solidify quickly due to the evaporation of the volatile substances they contain.
    Type: Grant
    Filed: June 25, 2005
    Date of Patent: March 9, 2010
    Inventor: Cristian Penciu
  • Patent number: 7484642
    Abstract: A dispenser for dispensing a metered volume of a fluid product having a storage chamber for storing the fluid product, an outlet orifice through which the fluid product is dispensable from the dispenser and a metering chamber is disclosed. The metering chamber has an outlet opening which places the metering chamber in fluid communication with the outlet orifice, a transfer opening through which the fluid product is transferable between the storage and metering chambers, and a boundary wall structure which is cyclically movable between a first configuration, in which the transfer opening is opened, and a second configuration, in which the transfer opening is closed. Each cycle of movement which commences at, and ends in, the second configuration results in a metered volume of the fluid product being transferred from the storage chamber to the metering chamber via the transfer opening and dispensed from the outlet orifice via the outlet opening.
    Type: Grant
    Filed: August 4, 2003
    Date of Patent: February 3, 2009
    Assignee: Glaxo Group Limited
    Inventor: Stanley George Bonney
  • Patent number: 7373958
    Abstract: A liquid crystal dispensing apparatus facilitating detection of vapor within liquid crystal material, facilitating removal of residual liquid crystal material, and facilitating precise control of predetermined dispensing positions and dispensing amounts includes a container containing liquid crystal material, a discharge pump drawing in and discharging liquid crystal material, and a nozzle dispensing liquid crystal material, discharged from the discharge pump, onto a substrate. The discharge pump includes a case, a window at a lower portion of the case, a cylinder within the case, a piston rotatably arranged within the cylinder and having a groove for drawing in and discharging liquid crystal material, and a suction opening and a discharge opening through which liquid crystal material is drawn into and discharged from with respect to the cylinder.
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: May 20, 2008
    Assignees: LG Displays Co., Ltd., Top Engineering Co., Ltd.
    Inventors: Jae-Gyu Jeong, Soo-Min Kwak, Hae-Joon Son, Man-Ho An, Joon-Young Kim
  • Patent number: 7261224
    Abstract: With the subject invention, a pump may be formed that generally includes a reservoir formed to accommodate at least one fluid dose, and a fluid-collecting chamber in communication with the reservoir. The fluid-collecting chamber is located such that fluid from the reservoir is fed thereinto, preferably gravitationally. A piston is disposed to reversibly slide within at least a dose-control portion of the fluid-collecting chamber, and the piston is configured such that upon sliding within the dose-control portion, the piston seals or substantially seals the dose-control portion from other portions of the fluid collecting chamber. The piston is configured to displace a volume of fluid from the sealed or substantially sealed dose-control portion which is approximately equal to or greater than the volume of one of the doses of the pump. A nozzle is also provided which is located such that the fluid displaced by the piston from the dose-control portion is generally urged towards the nozzle.
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: August 28, 2007
    Inventors: Ben Z. Cohen, Nigel Kelly
  • Patent number: 6945431
    Abstract: A sanitizable piston pump for dispensing ingredients of cosmetic preparations and other sanitary mixtures is shown and described. The pump includes a valve block including an inlet port threadably connected to a nipple which is detachably connected to an outlet port of a flexible package. The valve block further includes a piston port threadably connected to cylinder and an outlet port that sealably receives a valve stem. The inlet port, the outlet port and the piston port are in fluid communication with one another upon removal of the valve stem from the valve block. The valve stem includes an intake passage and an output passage. The cylinder slidably receives a piston. Both the piston and valve stem are connected to separate actuators. The actuator connected to the valve stem moves the valve stem into one of either an intake position for withdrawing fluid into the cylinder or a dispense position for pumping fluid out of the cylinder and out the outlet of the valve stem.
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: September 20, 2005
    Assignee: Fluid Management, Inc.
    Inventor: William A. Miller
  • Patent number: 6840406
    Abstract: An injector dispenser comprises a chamber (1) with two main sections (1a, 1b) of different diameter inside wich moves a primary piston (3) with zones (3a, 3b) of different diameter, with the piston body (3) being traversed by a slide (17), provided moreover with a secondary cylinder (12) and magnetic device of positioning and locking of driven flow that act as a stop on the slide (17), that includes inside it a pair of discs (18, 19) situated at the ends. A pump is achieved with a less complex structure and greater precision in the dispensing of the liquids to be supplied and using less energy.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: January 11, 2005
    Assignee: Innovacio Technologica Catalana
    Inventor: Xavier Corbella Cordomi
  • Patent number: 6581805
    Abstract: A viscous applicator having a chamber for holding viscous fluid such as dry wall compound. A one-way filling valve and a discharge nozzle are located on the chamber. The nozzle is opened and closed using a pull rod connected to a seal on one end. The second end is controlled by a rotatable handle on the applicator main housing. A gas spring is located in the housing and retracts during loading of dry wall compound into the chamber and discharges compound when the discharge nozzle is opened by the pull rod. The handle is spring loaded to close the nozzle when released. A hollow push rod connects the gas spring to a dispensing head in the chamber and the pull rod is movable through the push rod and the dispensing head. A series of cam slots and followers controls motions of the handle and the pull rod.
    Type: Grant
    Filed: October 17, 2001
    Date of Patent: June 24, 2003
    Inventors: John S. Conboy, Matt Jungklaus
  • Patent number: 6561389
    Abstract: A dispenser apparatus for ultrasound gel comprises a cylindrical body having a closed first end and a dispensing opening at the other end. There is an inlet opening near the first end in fluid communication with a source of pressurized ultrasound gel. A plunger is secured to a shaft near its first end; and there is a valve element at the second end of the shaft, adapted to close the dispensing opening when the shaft is in a first, at rest position, and to permit a dispensing operation when the shaft is in a second, dispensing position. The plunger has at least one passageway formed through its thickness, extending towards a second face. A plunger return spring acts against the second face of the plunger, so as to urge it towards the rest position. A freely moving sealing plate covers the passageway, and is mounted for longitudinal movement along the shaft; and has a return spring to urge it towards the second face of the plunger. The plunger covers the inlet opening when in its first position.
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: May 13, 2003
    Inventor: Walter R. Earle
  • Patent number: 6530907
    Abstract: This channel switching apparatus comprises a first channel switching device (303) for switching a first main channel and a second main channel, a second channel switching device (305) for switching a third main channel and a fourth main channel, a third channel switching device (307) for switching a fifth main channel and a sixth main channel, and a fourth channel switching device (308) for switching a seventh main channel and an eighth main channel. Thus, a channel switching apparatus which can readily and correctly perform even by touch can be provided.
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: March 11, 2003
    Assignee: Sugan Co., Ltd.
    Inventors: Atsushi Sugahara, Tetsuya Yamamoto, Michihiko Matsushima
  • Patent number: 6511301
    Abstract: In a fluid pump and cartridge assembly, a cartridge includes a material inlet port, a material outlet port, and a feed screw. The feed screw delivers fluid to be dispensed from the fluid inlet to the outlet port. The fluid inlet is preferably elongated in a direction along a longitudinal axis of the feed screw to enhance consistency in material flow through the cartridge. The feed screw is preferably driven by a closed-loop servo motor to achieve high-performance dispensing resolution. The assembly is preferably compatible with fixed-z and floating-z cartridges.
    Type: Grant
    Filed: October 31, 2000
    Date of Patent: January 28, 2003
    Inventor: Jeffrey Fugere
  • Patent number: 6467579
    Abstract: A press for extruding lubricating grease has a press head with a high pressure reciprocating pump, a high-pressure outlet opening with a check valve, a low-pressure intake opening for feeding the mass to be extruded to the reciprocating pump, and a connection on the press head for connecting a pipe thereto. The pipe receives therein a grease filled cartridge having a displaceable trailing piston. A cartridge-connecting element has a connection for the cartridge, and the pipe is open at that end thereof oriented away from the press head, whereby when the cartridge is connected to the cartridge-connecting element, it protrudes from the open end of the pipe, is guided radially by the pipe and is retained axially by the cartridge-connecting element.
    Type: Grant
    Filed: September 20, 1999
    Date of Patent: October 22, 2002
    Assignee: MATO Maschinen-und Metallwarenfabrik Curt Matthaei GmbH & Co. KG
    Inventor: Steffen Simon
  • Publication number: 20020074362
    Abstract: A dispenser for dispensing a fluid includes a rigid vial that has a main fluid chamber containing a fluid, and a pump assembly that is in fluid communication with the main fluid chamber and is configured to dispense a predetermined quantity of fluid from the main fluid chamber. A flexible bladder is provided which is located within the main fluid chamber and is configured to expand to fill the ullage created within the main fluid chamber during dispensing of fluid by the pump assembly. The resilient bladder tends to force itself outwardly toward the rigid vial and, in turn, increases the pressure within the main fluid chamber in comparison to the interior of the bladder to thereby prevent the ingress of air or vapors through the bladder or otherwise into the main fluid chamber.
    Type: Application
    Filed: October 23, 2001
    Publication date: June 20, 2002
    Inventors: Daniel Py, Joseph M. Ting
  • Patent number: 6367664
    Abstract: An applicator (33) to deliver viscous liquids such as cream, mayonnaise or mustard. The applicator (33) includes a cylinder assembly (25) which receives a piston (4). The cylinder assembly (25) separates a pair of chambers (26, 27). The piston (4) includes a one-way valve (3) which is resiliently deflectable from apertures (28) in the piston to provide for the flow of liquid from the chamber (26) to the chamber (25). An inlet extends to the chamber (26) while an outlet valve (1) communicates with the chamber (24). This arrangement minimizes hand pressure required by an operator to manipulate the applicator (30) in delivering the viscous liquid.
    Type: Grant
    Filed: April 4, 2000
    Date of Patent: April 9, 2002
    Assignee: N.J. Phillips Pty, Limited
    Inventors: Glenn Walter Bunyan, Keith Graham Rymer
  • Patent number: 5992695
    Abstract: A dispensing system has a gas-powered pump 5 supplied with gas through an inlet 16 from a supply 7 when an actuation valve 11 is operated, the actuation valve also causing the opening of a dispense valve 9 in the outlet 18 of the pump. Gas supplied to the inlet 16 displaces a drive piston 35 against the action of a return spring 41. A rod 31 movable by the drive piston 35 extends into a pumping cylinder 13 where it drives a two-part pumping piston 33 over a substance dispensing stroke. As the substance is being dispensed by the piston 33 a fresh charge of the substance is drawn into the cylinder through a substance inlet 27 connected to a supply 3, which may be a bag-in-box. During the return stroke, lost motion between an inner piston part 43 fixed to the rod 31 and an outer collar-shaped piston part 51 is adjustable by limit switches (109, FIG. 5B) or locking pins (99, FIG. 5A). The actuation valve may be push-button operated (FIGS. 4A and 4B).
    Type: Grant
    Filed: March 20, 1998
    Date of Patent: November 30, 1999
    Assignee: Shurflo Pump Manufacturing. Co.
    Inventor: Michael John Start
  • Patent number: 5862954
    Abstract: Soap lather dispensers are known which process soap solution and air via a flexible arrangement in a foaming unit to produce lather. These devices are either costly to manufacture or produce lather of unreliable and/or poor quality. A uniform lather quality can be ensured independently of the actuation path (P) by a metering pump (1) which operates synchronously with the air pump (12) and has no dead spaces. With special blower units, in particular by the incorporation of the foaming unit (18) in an air chamber (17), the lather quality is further improved. The device is suitable in particular for frequent use in public washrooms.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: January 26, 1999
    Assignee: CWS International AG
    Inventors: Markus Ehrensperger, Rupert Pachler
  • Patent number: 5816455
    Abstract: A frozen dessert dispensing apparatus is provided with a metering chamber having a predetermined volume into which a frozen dessert product is issued at a uniform constant rate from a bulk source. The time period required to fill the chamber volume determines a characteristic viscosity value of the dessert product which is advantageously used to time the flow of additional frozen dessert product from the source into and through the chamber to a selected point. The total time required to dispense a desired volume is based upon the viscosity measurement. A reciprocating piston arrangement provides gating of the frozen dessert product from the bulk source when in a first position and further acts to extrude frozen dessert product from the metering chamber when set in motion under the command of a controller. The piston arrangement includes a compressible plunger portion which deforms as necessary to prevent accidents or other mishaps from occurring in pinch-off regions of the apparatus.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: October 6, 1998
    Assignee: Specialty Equipment Companies, Inc.
    Inventors: Helmut A. Alpers, Jon P. Russett
  • Patent number: 5732853
    Abstract: Dosing unit comprising a dispensing device and a container bag unit. The container bag unit has an imperforate wall. A sleeve-shaped part having an opening therethrough is secured to the wall, the wall closing one end of the sleeve-shaped part. A piercing element with a point is disposed within the sleeve with its point directed toward the wall. A dispensing device is receivable in the end of the sleeve-shaped part opposite the wall to engage the piercing element and to move the piercing element relative to the sleeve to pierce the wall to permit flow of the contents of the bag unit through the sleeve-shaped part and to and through the dispensing device. The piercing element is fixed to the sleeve-shaped part by a rupturable connection that breaks when the dispensing device presses against the piercing element.
    Type: Grant
    Filed: March 26, 1997
    Date of Patent: March 31, 1998
    Assignee: Bentfield Europe B.V.
    Inventors: Wilhelmus Everhardus Ganzeboom, Wouter Jan Ten Wolde
  • Patent number: 5697409
    Abstract: A diluting station and a pipetting station for a machine such as a biological sample testing machine. The diluting station has a rotating shot tube that fills with diluent without the need for priming when the shot tube is in a vertically inclined orientation, and which dispenses the diluent into a receptacle when the shot tube is rotated to a downward orientation. A thimble valve is placed in the shot tube to control the flow of diluent into the valve.The pipetting station includes a cylindrical housing storing a plurality of straws and a concentric rotating drum that sweeps a straw into a straw withdrawal slot. A tubular tapered transfer pin is inserted into the straw frictional into engagement with the straw. The tubular transfer pin rotates the straw out of the slot into a generally downward orientation towards a receptacle containing a fluid. The pin and straw are lowered so as to place the end of the straw into the fluid.
    Type: Grant
    Filed: February 21, 1996
    Date of Patent: December 16, 1997
    Assignee: bioMerieux Vitek, Inc.
    Inventors: James Clement Bishop, Donald Meyer, Craig Drager, Raymond O'Bear
  • Patent number: 5573146
    Abstract: Positive adjustable flow is provided for a dual flow valve for paint dispensing or the like utilizing externally adjustable stops and operating lifts deployed by a single pressure source alternatively or simultaneously applied to a plurality of operating pistons.
    Type: Grant
    Filed: January 9, 1995
    Date of Patent: November 12, 1996
    Assignee: Ingersoll-Rand Company
    Inventor: Richard K. Gardner
  • Patent number: 5531255
    Abstract: A process and apparatus used in manufacturing prefilled, sterile delivery devices such as syringe assemblies. The process includes sealing a syringe container portion at both ends and filling the same through a port provided in the container portion between the two ends. After filling, the port is closed and sealed and the syringe assembly is sterilized to provide a sterile delivery device with sterile contents. A suitable syringe container portion for producing prefilled, sterile delivery devices is also disclosed.
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: July 2, 1996
    Assignee: Mallinckrodt Medical, Inc.
    Inventor: Rita D. Vacca
  • Patent number: 5522710
    Abstract: There is presented a manifold assembly for a linear pump, the assembly inding a tubular manifold for attachment to an outlet portion of the pump, the manifold having therein a central bore extending lengthwise therethrough and aligned with the pump outlet, and a widthwise water inlet extending through a wall of the manifold to the central bore. The assembly further includes a sleeve slidably disposed in the central bore and adapted to be fixed to a piston in the pump. The sleeve is moveable in the manifold central bore in accordance with movement of the piston in the pump, to effect closure and opening of the water inlet to provide water pressure adjacent the piston as the piston reaches the end of its working stroke.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: June 4, 1996
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: George M. Duarte
  • Patent number: 5190191
    Abstract: A viscous fluid dispenser is provided including a housing enclosing a pressurizable viscous fluid reservoir connected to a collapsible measuring chamber. A valve is connected therebetween and can be activated to fill the chamber on demand. The dispenser will discharge a premeasured quantity of fluid either proximally or remotely and direct dispensing of unmeasured quantities without modification.
    Type: Grant
    Filed: March 13, 1991
    Date of Patent: March 2, 1993
    Inventor: Mark E. Reyman
  • Patent number: 4995867
    Abstract: A novel aural medication administration device is disclosed which allows a patient to self-administer aural medication to an ear disposed in any plane. Further the aural medication administration device accepts, for later dispensing, drop by drop introduction of medication into a side port of an aural syringe dispenser, the accuracy and precision of each dose of medication being determined by counting drops as prescribed by a physician. By providing for introduction of medication through a side port, rather than through the effluent port, the aural medication administration device can repeatably accept and dispense medication without contaminating a source fluid by material which can collect on the effluent port of an aural dispensing device.
    Type: Grant
    Filed: January 24, 1990
    Date of Patent: February 26, 1991
    Inventor: Eugene A. Zollinger
  • Patent number: 4889432
    Abstract: A dental mixer apparatus including an upright mixing chamber having an upper open end for receiving dental impression materials and a plunger member suspended coaxially upon an elongated rotary driven mixer shaft for vertical reciprocable movement between a lower operative position in which the plunger is received within the mixing chamber and an upper inoperative position above the mixing chamber. A rotary mixer head is driven by the mixer shaft below the mixing chamber for mixing the materials within the mixing chamber. A suction conduit is provided to suck air from the mixing chamber in order to minimize voids and bubbles within the mixed ingredients. The mixer shaft is supported by a support bracket which is pivotally mounted to permit the mixer shaft and plunger to swing away from their normal vertical position above the mixing chamber to provide more working space above the mixing chamber.
    Type: Grant
    Filed: February 7, 1989
    Date of Patent: December 26, 1989
    Inventor: Roosevelt Patterson
  • Patent number: 4690310
    Abstract: A fluid dispensing apparatus is provided especially designed to minimize the amount of fluid retained in the apparatus during a pumping cycle. The apparatus includes a pair of concentrically aligned inner and outer tubular sleeves shiftable relative to each other for alignment of their respective inlet ports. A piston is received within the inner sleeve, and a nozzle member is axially aligned with and receivable in the inner sleeve.
    Type: Grant
    Filed: December 11, 1985
    Date of Patent: September 1, 1987
    Assignee: Progressive Assembly Machine Co., Inc.
    Inventor: Robert Rasmussen
  • Patent number: 4555047
    Abstract: A tapping lubricant dispenser apparatus is provided for use in numerically controlled automatic toolchanger machining systems to dispense tapping lubricant into a previously drilled hole before tapping. The tapping lubricant is usually a viscous tapping compound of the consistency of paste, grease or the like. The apparatus includes a toolholder of the type to fit into the machine spindle, a reservoir for a supply of lubricant--typically sufficient to run unattended for several complete cycles, e.g. at least one shift--and a reciprocating pump that dispenses the lubricant responsive to actuation by the numerical control system when the toolholder of this apparatus is fitted into the machine tool spindle. The reservoir reloads the pump after each dispensing action. The numerical control and toolchanger system is programmed to select the apparatus, put it in the spindle, align same with the hole to be tapped, and causes pump reciprocation and dispensing and then remove the apparatus from the spindle.
    Type: Grant
    Filed: August 19, 1983
    Date of Patent: November 26, 1985
    Assignee: Cincinnati Milacron Inc.
    Inventor: Harry E. Ackley
  • Patent number: 4500273
    Abstract: An apparatus for measuring and dispensing sugar syrups from a hopper into a mold and employing a mounting block which defines at least one cavity for housing a dispensing valve.The valve comprises a movable cylinder operable by a first pneumatic means and a piston means operable by a second pneumatic means. A pair of sequencing valves are employed for actuating the first and second pneumatic means in a timed sequence for effecting the movement of the cylinder and piston of the dispensing valve.
    Type: Grant
    Filed: December 19, 1983
    Date of Patent: February 19, 1985
    Inventor: Dennis M. Anderson
  • Patent number: 4188724
    Abstract: A side loading dental impression gun designed to accommodate rapid loading into the tubular barrel of the gun of a fast setting dental impression material. A syringe-like gun is formed with a relatively large door-like opening in the side of the barrel adjacent the discharge end of the gun to provide a relatively large opening through which a charge of a semi-fluent fast setting dental impression material can be introduced rapidly into the barrel. Various forms of door-latching or closing devices are disclosed for quickly conditioning the gun for dispensing the impression material with a minimum delay, thus preventing initial setting of the material within the gun.
    Type: Grant
    Filed: December 15, 1977
    Date of Patent: February 19, 1980
    Inventor: James F. Lichon
  • Patent number: RE40539
    Abstract: In a fluid pump and cartridge assembly, a cartridge includes a material inlet port, a material outlet port, and a feed screw. The feed screw delivers fluid to be dispensed from the fluid inlet to the outlet port. The fluid inlet is preferably elongated in a direction along a longitudinal axis of the feed screw to enhance consistency in material flow through the cartridge. The feed screw is preferably driven by a closed-loop servo motor to achieve high-performance dispensing resolution. The assembly is preferably compatible with fixed-z and floating-z cartridges.
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: October 14, 2008
    Assignee: DL Technology LLC
    Inventor: Jeffrey P. Fugere