Source: http://www.google.com/patents/US6354471?ie=ISO-8859-1&dq=6,183,366
Timestamp: 2015-05-06 23:12:51
Document Index: 586839335

Matched Legal Cases: ['arts 2', 'art 5', 'art 5', 'arts 2', 'art 5', 'arts 2', 'arts 2', 'arts 2', 'art 5', 'arts 2']

Patent US6354471 - Liquid material dispensing apparatus - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA liquid dispenser with a syringe reservoir including: (a.) a frame (1) formed by upper bracket (2) and lower bracket (3); (b.) a body (5) that is removable at the frame's upper bracket (2) and provided at its upper end with a threaded part for installing an actuator (6) and provided at its lower end...http://www.google.com/patents/US6354471?utm_source=gb-gplus-sharePatent US6354471 - Liquid material dispensing apparatusAdvanced Patent SearchPublication numberUS6354471 B2Publication typeGrantApplication numberUS 09/725,988Publication dateMar 12, 2002Filing dateNov 29, 2000Priority dateDec 3, 1999Fee statusPaidAlso published asUS20010020629Publication number09725988, 725988, US 6354471 B2, US 6354471B2, US-B2-6354471, US6354471 B2, US6354471B2InventorsHideyo FujiiOriginal AssigneeNordson CorporationExport CitationBiBTeX, EndNote, RefManPatent Citations (6), Referenced by (17), Classifications (11), Legal Events (5) External Links: USPTO, USPTO Assignment, EspacenetLiquid material dispensing apparatus
US 6354471 B2Abstract
I claim: 1. A liquid dispenser with a syringe reservoir, comprising:
a frame formed by an upper bracket and a lower bracket; a body connected in a removable manner at said upper bracket, and having an upper end with a threaded part and a lower end with an insertion part for insertion into a syringe; an actuator coupled to said threaded part provided at said upper end of said body; a valve stem operated by said actuator; and a valve seat member formed to be removable at said lower bracket. 2. A liquid dispenser as set forth in claim 1, wherein said valve stem carries an armature and said actuator further comprises an electromagnetic actuator including a coil, and said actuator is attached to said body in a manner allowing adjustment in the position of the coil relative to the armature thereby regulating a magnetic force.
FIG. 3 is a cross sectional view taken along line A�A of FIG. 2.
Below, working examples of liquid dispensers in accordance with the present invention shall be explained in detail using drawings. That is, FIG. 1 is a drawing showing the overall structure of a liquid dispenser in accordance with the present invention, FIG. 2 is an enlarged partial sectional view of FIG. 1, FIG. 3 is a sectional view of A�A in FIG. 2, and FIG. 4 is a drawing showing a partial sectional view when using a different size syringe.
Next, 5 indicates the body. A through hole 5 c, penetrated by the valve stem 12, is provided in the center of the body 5, and a neck 5 a is formed to be freely removable between the bifurcated parts 2 a and 2 b of the aforesaid upper bracket 2. When installed, it can be vertically positioned with respect to the upper bracket 2. In addition, a gas hole 5 d is provided that communicates with the upper bracket 2's passage 2 d when installed; a seal member (O ring) 17 is installed at the portion facing the passage 2 d. Also, a male threaded part 5 b is provided in the top of the body 5 for installing the actuator 6. In addition, the outer diameter of the body 5's lower end is formed as an insertion part 5 e so that it can be inserted into and removed from the inner diameter of the syringe 14, and a seal member (O ring) 13 is installed so that pressure gas 18 inside the syringe 14 does not leak out during use. Also, a female thread 5 f is provided in the inner diameter of the body 5's lower end for installing the attachment 16 that is used when using a syringe of different size, to be described later. Furthermore, the installation means for installing the attachment 16 is not limited to a thread means; other installation means can also be used.
Next, the dispensing mechanism 30, which incorporates the actuator 6, body 5, valve stem 12, syringe 14, and valve seat member 15, is installed on the frame 1. That is, the valve seat member 15 is installed in the lower bracket 3's shoulder support seat 3a, and the body 5's neck 5 a is installed between the upper bracket 2's bifurcated parts 2 a and 2 b. Furthermore, this is not described in detail in the drawing, but the relationship between the upper bracket 2 and the body 5 is structured so that a two-sided cut part 5 g formed in the cylinder of the body 5 matches and is inserted between the upper bracket 2's bifurcated parts 2 a and 2 b, and is positioned and fixed at a specified position by a spring lock pin when rotated 90�. It is structured so that when removing it, it cannot be removed until the body 5 has been rotated 90�. Therefore when the body 5 is inserted between the upper bracket 2's bifurcated parts 2 a and 2 b and rotated 90�, the gas hole 2 c of the body 5 and the upper bracket 2's passage 2 d are automatically positioned to match up with one another and communicate.
Next we shall explain the procedure for replacement with a new syringe when the liquid inside the syringe is exhausted, etc. First, the body 5 installed between the upper bracket 2's bifurcated parts 2 a and 2 b is rotated 90�, and the two-sided cut part 5 g formed in the cylinder of the body 5 matches between the bifurcated parts 2 a and 2 b, and the dispensing mechanism 30 is removed from the frame 1. When this occurs, the position of the upper bracket 2's passage 2 d and the body 5's gas hole 2 c become offset due to the 90� rotation, and the pressure gas 18 in the syringe 14 is released from the gas hole 2 c to the atmosphere, and the pressure inside the syringe becomes zero. Therefore the prior-art problem of a syringe violently blowing off due to increased gas pressure is eliminated. The removed dispensing mechanism 30 is then disassembled into the valve seat member 15, syringe 14, body 5, actuator 6, etc., and a new syringe can be replaced.
As explained above, the present invention's liquid dispenser provides a liquid dispenser that can handle a variety of types of syringe size; the frame is manufactured to match the size of the largest syringe, and an attachment conforming to small syringes is prepared. Also, when the dispensing mechanism is removed from the frame, the body is rotated 90�, thereby automatically releasing the pressure gas inside the syringe, so the syringe does not blow off due to gas pressure and it is safe. In addition, if the actuator is constituted as an electromagnetic actuator, the gap between the armature and the electromagnetic coil can be freely regulated by the actuator's attachment screw's screw-in amount, so the strength or weakness of the magnetic force acting on the actuator can be regulated, and it is possible to speed up the operational response speed.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS3982724 *Apr 14, 1975Sep 28, 1976Indicon Inc.Deformable tube material dispenserUS4437586 *Mar 29, 1982Mar 20, 1984Eastman Kodak CompanyMechanically actuated pipette dispenserUS4848606 *Jul 23, 1987Jul 18, 1989Tokyo Juki Industrial Co., Ltd.Apparatus for dispensing a predetermined volume of paste-like fluidUS4922852 *Sep 7, 1988May 8, 1990Nordson CorporationApparatus for dispensing fluid materialsUS5074443 *Dec 20, 1989Dec 24, 1991Nordson CorporationAdaptor for liquid dispensing syringeJPH059099A Title not available* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS6561389 *Jul 31, 2001May 13, 2003Walter R. EarleDispenser apparatus for medical grade ultrasound gelUS6782928 *Dec 27, 2002Aug 31, 2004Lg.Philips Lcd Co., Ltd.Liquid crystal dispensing apparatus having confirming function for remaining amount of liquid crystal and method for measuring the sameUS6983867Apr 28, 2003Jan 10, 2006Dl Technology LlcFluid dispense pump with drip prevention mechanism and method for controlling sameUS7096897Jul 22, 2004Aug 29, 2006Lg.Philips Lcd Co., Ltd.Liquid crystal dispensing apparatus having confirming function for remaining amount of liquid crystal and method for measuring the sameUS7306016 *Jul 22, 2004Dec 11, 2007Lg.Philips Lcd Co., Ltd.Liquid crystal dispensing apparatus having confirming function for remaining amount of liquid crystal and method for measuring the sameUS7331482Mar 26, 2004Feb 19, 2008Dl Technology, LlcDispense pump with heated pump housing and heated material reservoirUS7396510 *Jan 10, 2002Jul 8, 2008Roland ZengerleDevice and method for dosing small amounts of liquidUS7543720 *May 4, 2004Jun 9, 2009The Lee CompanyMethod and apparatus for dispensing small volumes of fluidUS7731059 *Jul 17, 2006Jun 8, 2010Lg Display Co., Ltd.Liquid crystal dispensing apparatus having confirming function for remaining amount of liquid crystal and method for measuring the sameUS7745741Nov 2, 2007Jun 29, 2010Lg Display Co., Ltd.Liquid crystal dispensing apparatus having confirming function for remaining amount of liquid crystal and method for measuring the sameUS8052013 *Feb 3, 2005Nov 8, 2011Lg Display Co., Ltd.Liquid crystal dispensing apparatus having integrated needle sheetUS8439226 *Feb 9, 2009May 14, 2013Nordson CorporationLiquid dispensing valve and methodsUS8490575 *May 6, 2010Jul 23, 2013Marco Systemanalyse Und Entwicklung GmbhValveUS8757511Jan 4, 2011Jun 24, 2014AdvanJetViscous non-contact jetting method and apparatusUS20090206112 *Feb 9, 2009Aug 20, 2009Nordson CorporationLiquid dispensing valve and methodsUSRE40539 *Sep 23, 2004Oct 14, 2008Dl Technology LlcFluid pump and cartridgeCN100485496CMar 13, 2003May 6, 2009乐金显示有限公司Liquid crystal dispensing apparatus having confirming function for remaining amount of liquid crystal* Cited by examinerClassifications U.S. Classification222/380, 222/504, 222/397, 222/559, 222/325International ClassificationB05C5/02, B05C11/10, B05C5/00Cooperative ClassificationB05C5/0233, B05C5/0225European ClassificationB05C5/02CLegal EventsDateCodeEventDescriptionMar 15, 2013FPAYFee paymentYear of fee payment: 12Sep 10, 2009FPAYFee paymentYear of fee payment: 8Jul 22, 2005FPAYFee paymentYear of fee payment: 4Apr 1, 2003CCCertificate of correctionMar 12, 2001ASAssignmentOwner name: NORDSON CORPORATION, OHIOFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FUJII, HIDEYO;REEL/FRAME:011614/0475Effective date: 20010115Owner name: NORDSON CORPORATION 28601 CLEMENS ROAD WESTLAKE OHOwner name: NORDSON CORPORATION 28601 CLEMENS ROADWESTLAKE, OHFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FUJII, HIDEYO /AR;REEL/FRAME:011614/0475Owner name: NORDSON CORPORATION 28601 CLEMENS ROADWESTLAKE, OHFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FUJII, HIDEYO /AR;REEL/FRAME:011614/0475Effective date: 20010115Owner name: NORDSON CORPORATION 28601 CLEMENS ROAD WESTLAKE OHFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FUJII, HIDEYO;REEL/FRAME:011614/0475Effective date: 20010115RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services