Source: http://www.google.com/patents/US7241413?dq=5,742,768
Timestamp: 2013-12-06 08:28:10
Document Index: 107431252

Matched Legal Cases: ['arts 45', 'arts 45', 'art 5', 'art 6', 'arts 5', 'art 5', 'arts 5', 'art 6', 'art 5', 'art 6', 'arts 5', 'arts 5']

Patent US7241413 - Method for producing a hollow handle for a teeth cleaning device - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Advanced Patent Search | Sign inAdvanced Patent SearchPatentsThe invention relates to saucer-type handle components (5, 6) that pertain to a hollow handle and are produced in several steps. Said handle is used for a toothbrush. Said components are joined together and are inserted into an injection mould (25). A synthetic material, preferably a thermoplastic elastomer,...http://www.google.com/patents/US7241413?utm_source=gb-gplus-sharePatent US7241413 - Method for producing a hollow handle for a teeth cleaning devicePublication numberUS7241413 B2Publication typeGrantApplication numberUS 10/181,709PCT numberPCT/CH2001/000080Publication dateJul 10, 2007Filing dateFeb 6, 2001Priority dateFeb 9, 2000Fee statusPaidAlso published asDE10005738A1, DE50115450D1, EP1253839A1, EP1253839B1, EP1625809A1, EP1625809B1, EP2186432A1, EP2186432B1, EP2186433A1, EP2186433B1, US20030037391, WO2001058306A1Publication number10181709, 181709, PCT/2001/80, PCT/CH/1/000080, PCT/CH/1/00080, PCT/CH/2001/000080, PCT/CH/2001/00080, PCT/CH1/000080, PCT/CH1/00080, PCT/CH1000080, PCT/CH100080, PCT/CH2001/000080, PCT/CH2001/00080, PCT/CH2001000080, PCT/CH200100080, US 7241413 B2, US 7241413B2, US-B2-7241413, US7241413 B2, US7241413B2InventorsPhilipp Pfenniger, Beat HuberOriginal AssigneeTrisa Holding AgPatent Citations (29), Referenced by (3), Classifications (36), Legal Events (2) External Links: USPTO, USPTO Assignment, EspacenetMethod for producing a hollow handle for a teeth cleaning deviceUS 7241413 B2Abstract The invention relates to saucer-type handle components (5, 6) that pertain to a hollow handle and are produced in several steps. Said handle is used for a toothbrush. Said components are joined together and are inserted into an injection mould (25). A synthetic material, preferably a thermoplastic elastomer, is injection-moulded around the mould-parting line between the handle components (5, 6) in said injection mould (25). The connection seam (22) thus produced holds the two handle components (5, 6) together in a nondetachable manner and seals the hollow space (13) which is formed by the handle components (5, 6).
10. The method as claimed in claim 1, wherein said thermoplastic material has a Shore hardness of 10�70.
BACKGROUND The present invention relates to a method for producing a hollow handle for a teeth cleaning device and to a handle produced by this method.
SUMMARY The present invention is consequently based on the object of providing a method of the type stated at the beginning that allows handle parts of a wide variety of materials to be joined together to form a hollow handle and connected to each other in an nondetachable and sealed manner.
BRIEF DESCRIPTION OF THE DRAWINGS The subject matter of the invention is explained in more detail below on the basis of the drawings, in which purely schematically:
DETAILED DESCRIPTION OF EMBODIMENTS A teeth cleaning device produced according to the invention, such as an electrically operated toothbrush 1, will be described on the basis of FIGS. 1�3.
The method for producing a toothbrush of the type shown in FIGS. 1�3 is now described on the basis of FIGS. 4�6.
The method explained on the basis of FIGS. 4�7 also allows toothbrushes designed differently than the toothbrush according to FIGS. 1�3 to be produced, as now explained by way of example with reference to FIGS. 9 and 10.
After the joining together of the handle parts 45, 46, the handle 42 is coated by a plastics material in an injection mold in the region of the parting joint between the handle parts 45, 46, as has been explained on the basis of FIGS. 4�6.
FIG. 11 shows in the same representation as FIGS. 4 and 5 the two mold halves 26′ and 27′ of a three-component injection mold 25′. In a first cavity 52, the first handle part 5 is produced�with the injection mold 25′ closed�by injecting the corresponding plastics material by means of the assigned injection unit 29. At the same time, in a second cavity 52′ of the injection mold 25′, the second handle part 6 is produced by injecting another plastics material by means of the assigned injection unit 29. Finally, likewise at the same time, in a third cavity 52″ of the injection mold 25′, the connection seam 22 is formed between the handle parts 5 and 6, produced in a preceding injection cycle and then joined together, by injecting a further different plastics material by means of the assigned injection unit 29.
The first handle part 5 is then inserted by means of the robot arm 54 into the third cavity 52″ of the mold half 26′ and released by deactivating the corresponding suction head 56. Subsequently, the handle parts 5, 6 are joined together, in that the robot arm 54 places the second handle part 6 onto the first handle part 5. By deactivating the assigned suction head 56, the second handle part 6 is released. Once the robot arm 54 has been moved out of the region of the injection mold 25′�also for discharging the toothbrush 1�, the two mold halves 26′, 27′ are moved toward each other, in order to close the injection mold 25′ for the next injection operation.
It is also possible to join the two handle parts 5, 6 together outside the injection mold 25′�for example during an injection operation�and then place them in the third cavity 52″. This procedure is advantageous in particular when further parts are to be introduced into the cavity 13 or one of the handle parts 5, 6 is to be provided with a surface finish or be printed on.
As described, preferably a soft plastic, i.e. a plastic that remains elastomeric, with a Shore hardness of preferably 10�70, is used for the forming of the connection seam 22, 48. However, it is also possible to use a hard plastic in the same way as for the handle and neck parts.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS4175879 *May 27, 1977Nov 27, 1979Pietro MolinariToothbrushUS4261947 *Mar 7, 1979Apr 14, 1981Yoshio OgiMethod for manufacturing hollow plastic articles by joining hollow molded portions by a molded jointUS4476602 *Aug 13, 1982Oct 16, 1984Black & Decker, Inc.Portable electric scrubberUS4544588Mar 26, 1984Oct 1, 1985Bayer AktiengesellschaftHollow bodies of plastic materialsUS4799280 *Jan 5, 1987Jan 24, 1989Lee Fu KueiMotor driven rotary brushUS5221538Aug 5, 1991Jun 22, 1993Daikyo Co., Ltd.Rotational injection molding machine having a plurality of combinations of male and female diesUS5707166 *Jan 24, 1997Jan 13, 1998Johnson & Johnson Consumer Products, Inc.ToothbrushUS5718014 *Apr 29, 1996Feb 17, 1998Black & Decker Inc.Hand held motorized tool with over-molded coverUS5815872Aug 8, 1997Oct 6, 1998Optiva CorporationPressure overload indicator system for power toothbrushesUS5913632Mar 17, 1998Jun 22, 1999Persad; Suresh L.Refillable dentrifice dispensing toothbrushUS5934762Aug 8, 1997Aug 10, 1999Remedent Usa, Inc.Oral hygiene devices and manufacturing methods thereforUS6319448 *May 18, 1999Nov 20, 2001Remy KirchdoerfferProcess for the production of an apparatus or instrument by overmolding and apparatus or instrument thus obtainedUS20020120991Jan 12, 2002Sep 5, 2002Cacka Joe W.ToothbrushUS20020124333Mar 11, 2002Sep 12, 2002Trisa HoldingToothbrush having a vibrating head partDE1904625A1Jan 30, 1969Oct 16, 1969Time IncStoffauflaufDE2024082A1May 16, 1970Dec 2, 1971SwfTitle not availableDE2501291A1Jan 15, 1975Jul 22, 1976Roehm GmbhVerfahren zur herstellung von hohlkoerpern nach dem spritzgiessverfahrenDE3312231A1Apr 5, 1983Oct 11, 1984Bayer AgHohlkoerper aus kunststoffenDE4126041A1Aug 6, 1991Feb 13, 1992Japan Steel Works LtdSpritzgiessmaschine mit verdrehbaren, zu verschiedenen kombinationen zusammenstellbaren patrizen- und matrizen-einzelformenDE4241409C2Dec 9, 1992Jul 23, 1998Josef GleixnerVerfahren sowie Vorrichtung zum Herstellen eines Bauteils durch Spritzen wenigstens zweier Elemente aus Kunststoff und durch Zusammenf�gen dieser Elemente nach dem SpritzenDE4417979A1May 21, 1994Nov 23, 1995Siegfried Hofmann Gmbh WerkzeuVerfahren zum Herstellen mehrteiliger Spritzgu�-Formteile und Werkzeug zur Durchf�hrung des VerfahrensDE19526934A1Jul 24, 1995Jan 30, 1997Mann & Hummel FilterBefestigungselementDE29817994U1Oct 8, 1998Apr 22, 1999Trisa Holding AgZahnb�rsteDE29919053U1Nov 3, 1999Dec 21, 2000Trisa Holding Ag TriengenZahnb�rsteEP0683031A2May 8, 1995Nov 22, 1995Siegfried Hofmann GmbH WerkzeugbauMethod for manufacturing multi-part injection moulded objects and device for carrying out the methodFR1341439A Title not availableFR2018293A1 Title not availableGB1336613A Title not availableWO2000021405A1May 20, 1999Apr 20, 2000Peter GrossTooth brush* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS7891898 *May 6, 2005Feb 22, 2011S.C. Johnson & Son, Inc.Cleaning pad for wet, damp or dry cleaningUS20110037197 *May 26, 2009Feb 17, 2011Gvs S.P.AApparatus for molding and assembling a chamber unit for biomedical use, and associated methodUS20120192369 *Nov 21, 2011Aug 2, 2012Juergen MohrToothbrush* Cited by examinerClassifications U.S. Classification264/263, 15/143.1, 15/22.1, 264/243International ClassificationA46D3/00, B29C45/16, B29C45/00, A46B15/00, A46B5/00, A61C17/22, B29D99/00Cooperative ClassificationB29L2031/42, B29C45/1676, A46B5/00, B29C66/54, A46D3/00, A61C17/225, B29K2221/003, B29K2711/14, B29C45/0062, B29C45/14778, B29L2031/425, A46B15/0061, B29L2031/463, B29C45/14467, A61C17/3481, A46B15/00, B29C2045/0067European ClassificationA46B15/00C3, B29C45/14G, B29C45/00J3B, A61C17/34A8, A46D3/00, A46B5/00, A61C17/22H, A46B15/00Legal EventsDateCodeEventDescriptionJan 5, 2011FPAYFee paymentYear of fee payment: 4Aug 1, 2002ASAssignmentOwner name: TRISA HOLDING AG, SWITZERLANDFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:PFENNIGER, PHILIPP;HUBER, BEAT;REEL/FRAME:012948/0592Effective date: 20020719RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google