Source: http://www.google.com/patents/US5647856?dq=patent:3079728
Timestamp: 2014-10-25 11:17:54
Document Index: 768418731

Matched Legal Cases: ['art 1', 'art 1', 'art 1', 'art 1', 'arts 7', 'arts 7', 'art 1', 'arts 7', 'arts 7', 'art 1', 'arts 7', 'arts 7', 'art 1', 'arts 7']

Patent US5647856 - Syringe for the controlled discharge of viscous materials - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA syringe having a bearing divided at least once in the axial direction of a threaded rod into bearing parts. The bearing parts are held at a distance from one another and at a distance from the threaded rod by at least one expanding part. The bearing parts, on their surfaces facing the threaded rod,...http://www.google.com/patents/US5647856?utm_source=gb-gplus-sharePatent US5647856 - Syringe for the controlled discharge of viscous materialsAdvanced Patent SearchPublication numberUS5647856 APublication typeGrantApplication numberUS 08/311,217Publication dateJul 15, 1997Filing dateSep 23, 1994Priority dateSep 23, 1993Fee statusLapsedAlso published asCA2132676A1, CA2132676C, DE4332307C1, EP0645124A1, EP0645124B1Publication number08311217, 311217, US 5647856 A, US 5647856A, US-A-5647856, US5647856 A, US5647856AInventorsRudolf Eykmann, Joachim Fritze, Birgit Uhrig, Dieter Schodel, Holger BurckhardtOriginal AssigneeHeraeus Kulzer GmbhExport CitationBiBTeX, EndNote, RefManPatent Citations (15), Non-Patent Citations (2), Referenced by (10), Classifications (9), Legal Events (6) External Links: USPTO, USPTO Assignment, EspacenetSyringe for the controlled discharge of viscous materialsUS 5647856 AAbstract A syringe having a bearing divided at least once in the axial direction of a threaded rod into bearing parts. The bearing parts are held at a distance from one another and at a distance from the threaded rod by at least one expanding part. The bearing parts, on their surfaces facing the threaded rod, have surfaces which can be brought by external pressure into engagement with the threaded rod against the resistance of the bearing parts.
What is claimed is: 1. A syringe for the controlled discharge of a viscous material, comprising:a cartridge for holding the material; an inner stopper in said cartridge; an adapter part having radially movable bearing parts, with each bearing part having a threaded segment; at least one expanding part; and a rotary piston, with the rotary piston having an inserted end configured to be inserted into one end of the cartridge, with the rotary piston configured substantially in the form of a threaded rod, with the inserted end of the rotary piston configured to press against the inner stopper, with the threaded rod movably held in the adapter part between the bearing parts, with the bearing parts held in a rest position by the at least one expanding part at a distance from one another in a radial direction of the threaded rod and at a distance from the threaded rod such that the threaded segments of the bearing parts are spaced from the threaded rod, and with the bearing parts movable between the rest position in which the threaded segments of the bearing parts are spaced at a distance from the threaded rod and a compressed position in which the threaded segments of the bearing parts directly engage the threads on the threaded rod by external pressure on the bearing parts. 2. A syringe as claimed in claim 1, wherein the expanding part is formed by at least one elastically deformable web.
SUMMARY OF THE INVENTION We have developed a syringe in which a bearing is divided at least once in the axial direction of a threaded rod into bearing parts. The bearing parts are held at some distance from one another by at least one expanding part in the radial direction of the threaded rod and at some distance from the threaded rod. The bearing parts, on their surfaces facing the threaded rod, have areas which can be brought by external pressure into engagement with the threaded rod against the resistance of the bearing parts.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a lateral plan view of a syringe with an adapter part and a cartridge inserted in it in accordance with the present invention;
FIG. 2 shows the syringe of FIG. 1 in a view rotated 90� around a longitudinal axis;
DESCRIPTION OF THE PREFERRED EMBODIMENTS The syringe for the discharge of a measured quantity of viscous materials shown in FIGS. 1 and 2 has an adapter part 1, in which a long cartridge 2 is inserted, which cartridge 2 is closed by a cap 3 on its exposed end which projects out of the adapter part 1. The cartridge 2 is filled with the material to be discharged and worked. A rotary piston 4, which is designed partly as a threaded rod 4', enters into the one end of the adapter part 1 and has a handle 5 on its exposed end. An insertion end of the rotary piston 4 presses against a stopper which is not shown in FIGS. 1 and 2 but which is visible in the embodiment shown in FIGS. 7 and 8. The threaded rod 4' of the rotary piston 4 is supported in the adapter part 1 in a bearing formed by two bearing parts 7. These bearing parts 7, as shown in FIGS. 9 to 11, each have respective handle surfaces 8 which project to a slight extent beyond the adapter part 1 and can easily be grasped by the user of the syringe. As shown in FIG. 3, on the inside of each of these bearing parts 7 is a threaded segment 9 which corresponds to the threaded portion 10 of the threaded rod 4'. Since the two bearing parts 7 face one another in the adapter part 1, as shown by way of example in FIG. 2, the threaded rod 4' is guided and centered by means of the facing threaded segments 9 of the bearing parts 7. In the starting position (when the syringe is not being used), the two bearing parts 7 are held at a radial distance from the threaded rod 4' by expanding parts in the form of elastically deformable webs 11 which are supported in corresponding grooves (not shown in detail) in the adapter part 1. Outwardly, i.e., in the radial direction from the threaded rod 4', the bearing parts 7 are held by expanded edge strips 12, as shown in FIG. 9.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS960081 *Apr 8, 1909May 31, 1910Banding Machine CompanyDevice for regulating delivery of plastic substances.US1704921 *Feb 11, 1924Mar 12, 1929Carl C QualeCapsule for hypodermic syringesUS1709637 *Mar 25, 1925Apr 16, 1929Cook Lab IncHypodermic syringeUS3144178 *Mar 12, 1962Aug 11, 1964Stanley J SarnoffCartridge holderUS3581399 *Aug 8, 1969Jun 1, 1971Centrix IncComposite resin filling syringe and techniqueUS3900954 *Jul 10, 1974Aug 26, 1975William B DraganDental filling gun and nozzle tip thereforUS4173227 *Jul 5, 1977Nov 6, 1979Cassou Bertrand M EInjecting gun for animals, in particular for the artificial insemination of cattleUS4710178 *Sep 11, 1986Dec 1, 1987Micro-Mega S.A.Precision injection system and method for intraligmental anesthesiaUS4738379 *May 13, 1986Apr 19, 1988Colpo Co., Ltd.Cartridge and its extractorUS4767413 *Apr 20, 1987Aug 30, 1988Habley Medical Technology CorporationDental syringe having an automatically retractable needleUS4915702 *Jul 11, 1988Apr 10, 1990Habley Medical Technology Of CaliforniaShielded safety syringeUS5454793 *Jan 14, 1993Oct 3, 1995Pharmacia AktiebolagMedicine dispensing deviceUS5531709 *Sep 23, 1994Jul 2, 1996Heraeus Kulzer GmbhSyringe for the controlled discharge of viscous materialsDE4200044A1 *Jan 2, 1992Jul 9, 1992Centrix IncDosierende dentalpatrone *DE7837177U1 Title not available* Cited by examinerNon-Patent CitationsReference1 *Charisma Inlays Gewinn durch Perfektion und A sthetik, published by Haraeus Kulzer GmbH, (31292/D 125 sK dt./WPR 12 12 200), 6 pages.2Charisma-Inlays Gewinn durch Perfektion und Asthetik, published by Haraeus Kulzer GmbH, (31292/D 125 sK dt./WPR 12 12 200), 6 pages.* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS6095814 *Jan 29, 1999Aug 1, 20003M Innovative Properties CompanyDispensing cartridge with stepped chamberUS6234996Jun 23, 1999May 22, 2001Percusurge, Inc.Integrated inflation/deflation device and methodUS6423050Jun 16, 2000Jul 23, 2002Zbylut J. TwardowskiMethod and apparatus for locking of central-vein cathetersUS6571992Jan 10, 2002Jun 3, 2003Dentsply Research & Development Corp.Dispensing syringeUS8246577Feb 13, 2009Aug 21, 2012Tecpharma Licensing AgInjection device with claw-type lockUS8679071Feb 13, 2009Mar 25, 2014Tecpharma Licensing AgInjection device comprising a mechanical lockUS8734403Feb 13, 2009May 27, 2014Tecpharma Licensing AgBlocking element for a dosing mechanismUS8834158Mar 21, 2012Sep 16, 2014Voco GmbhScrew syringe as well as a syringe barrel and female part for a screw syringeDE102011005919A1 *Mar 22, 2011Sep 27, 2012Voco GmbhDrehspritze sowie Spritzenk�rper und Mutterteil f�r eine DrehspritzeWO2002055406A2 *Jan 11, 2002Jul 18, 2002Dentsply Int IncDispensing syringe* Cited by examinerClassifications U.S. Classification604/181, 604/235, 604/218International ClassificationA61C5/04, B05C5/00, B05C17/01, A61C5/06Cooperative ClassificationA61C5/062European ClassificationA61C5/06ALegal EventsDateCodeEventDescriptionSep 13, 2005FPExpired due to failure to pay maintenance feeEffective date: 20050715Jul 15, 2005LAPSLapse for failure to pay maintenance feesFeb 2, 2005REMIMaintenance fee reminder mailedDec 21, 2000FPAYFee paymentYear of fee payment: 4Mar 1, 1999ASAssignmentOwner name: HERAEUS KULZER GMBH & CO. KG, GERMANYFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HERAEUS KULZER GMBH;REEL/FRAME:009781/0854Effective date: 19981116Sep 23, 1994ASAssignmentOwner name: HERAEUS KULZER GMBH, GERMANYFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:EYKMANN, RUDOLF;FRITZE, JOACHIM;UHRIG, BIRGIT;AND OTHERS;REEL/FRAME:007171/0215;SIGNING DATES FROM 19940915 TO 19940922RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google