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Publication numberUS2766022 A
Publication typeGrant
Publication dateOct 9, 1956
Filing dateJun 3, 1954
Priority dateJun 3, 1954
Publication numberUS 2766022 A, US 2766022A, US-A-2766022, US2766022 A, US2766022A
InventorsCharles E Bender
Original AssigneeVirtis Company Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Mixing equipment
US 2766022 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

Qct- 9. 1956 c. E. BENDER 2,766,022

MIXING. EQUIPMENT Filed June 3, 1954 INVENTbR flag/ Z 36%6/61' ATTORNEY nited dtates Patented Oct. 9, 1956 MEXING EQUIPMENT Charles E. Bender, Hastings on Hudson, N. Y., assignor to Virtis Company, Incorporated, Yonkers, N. Y., a corporation of New York Application June 3, 195 4, Serial No. 434,200 3 Claims. (Cl. 259-422) This invention relates to mixing equipment, particularly high speed mixers. It is directed at the problem of controlling atomization, and aims to provide an apparatus for high speed mixing in which aerosols from the fluid are prevented from leaving the mixing vessel.

Any mixing of any fluid disturbs the surface, and some mist is formed by this disturbance. As speed goes up, disturbance and consequent atomization or misting increases. For example, even the relatively slow speeds used in whipping cream on a household mixer can throw cream far out of the bowl. When speeds of 20,000 or more R. P. M. are used, as in the case of homogenization of biologicals, misting becomes a serious problem. If the liquid is at all dangerous, the homogenization must be done in a completely closed system, which may be expensive, or diificult to clean and/or sterilize, or have some other disadvantage. A simple high speed stirring device in a container cannot be used, because the mist escapes through the hole in the container lid through which the stirrer passes.

I have discovered that escape of mist can be prevented from passing inward and upward to the hole in the lid.

Most preferably, for handling dangerous biologicals, the lid has downwardly projecting baffles which mesh with upwardly projecting bafiies on the disc, to add a safety element to the assemblage. The baffled devices can be used for high speed homogenization, even at speeds of the order of 40,000 R. P. M., with no trace of atmospheric contamination.

The drawings disclose a invention; in the drawings,

Fig. l is a section to a vention mounted thereon,

Fig. 2 is a plan view of the lid used in Fig. 1,

Fig. 3 is a plan view of the sealing disc used in Fig. 1.

Referring to the drawings, the container 10, preferably of glass, has mounted thereon a lid 11. It consists of a flat disc 12 of Teflon or other material; a hole 13 is provided to permit a mixer shaft 14 to pass through. Down- Wardly projecting rings 15 and 16 are located at the edge of the disc; they form a channel 17 which tightly fits the upper rim of the container 10. Similar downwardly projecting bafiie rings 18 and 19 are located between the hole 13 and the edge rings 15 and 16.

The bottom piece 20 consists of a flat disc 21 of Teflon or similar flexible material; hole 22 is provided which preferred embodiment of the high speed mixer, with my inthe rod. An upwardly extendlng edge baflie ring 23 fits between rings 17 and 18 on the lid piece; a central baffle ring 24 fits between the rings 18 and 19. In practice, the

ring 20 is mounted on the stirrer just below the lid, so that the baifies overlap as shown.

Teflon (poly tetrachlorodifiuoroethylene) is one of the preferred materials solvents, acids and sterilized at the high tembiological work. Other materials can alkalis, and in addition can be peratures used for but single baffled piece have proved effective even at such high speeds as 40,000 R. P. M.

a stirrer, a baflied lid, and a the lid-sealing is obtained by Cleaning and sterilization are very can be changed without dewhich is defined in the claims.

' central hole therein; a stirrer shaft passing through the container to retard through the hole in the center of the lid.

2. The apparatus of claim 1, in which the lid carries a pair of downwardly extending projections about its rim which clamp the rim of the container top tightly between them.

References Cited in the file of this patent UNITED STATES PATENTS

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US161633 *Aug 15, 1874Apr 6, 1875 Improvement
US774851 *Apr 7, 1902Nov 15, 1904Arthur G MckeeMeans for separating non-gaseous material from a mixture thereof with gaseous material.
US1749281 *Mar 11, 1927Mar 4, 1930Transmission Ball Bearing CompRolling bearing
US1935857 *Nov 18, 1932Nov 21, 1933Nachumsohn IrvingElectric cream-whipper and drink mixer
US2005429 *Mar 21, 1932Jun 18, 1935Foster Wheeler CorpCentrifugal pump and the like
US2022384 *Mar 8, 1932Nov 26, 1935Celanese CorpLiquid seal
US2393691 *Nov 3, 1943Jan 29, 1946Worthington Pump & Mach CorpPumping unit
GB195832A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3038054 *Aug 4, 1959Jun 5, 1962Naimer Hubert LDevice for sealing electrical switches against splash water and the like
US3112081 *Apr 13, 1961Nov 26, 1963Sorvall Inc IvanMicro-homogenizing apparatus
US3169014 *Jun 8, 1961Feb 9, 1965Wilson Jr Kenneth TFluid-tight flexible support, seal and kit
US3367099 *Jan 9, 1967Feb 6, 1968Vyzk Ustav BavinarskySealing arrangement for a spinning apparatus
US4214759 *Apr 23, 1979Jul 29, 1980United States Steel CorporationSeal for railroad car hopper doors
US4380341 *Mar 8, 1982Apr 19, 1983Daimler-Benz A.G.Labyrinth seal for slip ring switch for steering wheels of motor vehicles
US5046458 *Sep 11, 1990Sep 10, 1991Tecumseh Products CompanyAir-cooled engine flywheel fan rotational debris inlet screen
US5472274 *Sep 12, 1994Dec 5, 1995Baillie; Rosa A.Pitcher with cooling and stirring structures
US5730801 *Aug 23, 1994Mar 24, 1998Applied Materials, Inc.Compartnetalized substrate processing chamber
US5883017 *Sep 2, 1997Mar 16, 1999Applied Materials, Inc.Compartmentalized substrate processing chamber
US6306658Dec 14, 1998Oct 23, 2001Symyx TechnologiesParallel reactor with internal sensing
US6455316 *Apr 13, 2000Sep 24, 2002Symyx Technologies, Inc.Parallel reactor with internal sensing and method of using same
US6548026Oct 22, 1998Apr 15, 2003Symyx Technologies, Inc.Parallel reactor with internal sensing and method of using same
US6582116Sep 24, 2001Jun 24, 2003Symyx Technologies, Inc.Apparatus and method for mixing small volumes of reaction materials
US6818183Apr 29, 2002Nov 16, 2004Symyx Technologies, Inc.Multi-temperature modular reactor and method of using same
US6834990Apr 8, 2003Dec 28, 2004Symyx Technologies, Inc.Impeller for mixing small volumes of reaction materials
US6890492Nov 28, 2000May 10, 2005Symyx Technologies, Inc.Parallel reactor with internal sensing and method of using same
US6994827Jun 1, 2001Feb 7, 2006Symyx Technologies, Inc.Parallel semicontinuous or continuous reactors
US7288229May 8, 2001Oct 30, 2007Symyx Technologies, Inc.Parallel reactor with sensing of internal properties
US9643141 *Oct 26, 2012May 9, 2017Trimr, LlcShakeable container with agitator
US20030190755 *Mar 25, 2003Oct 9, 2003Symyx Technologies, Inc.Parallel reactor with internal sensing and method of using same
US20120120757 *Apr 8, 2010May 17, 2012R.B. Radley & Co. Ltd.to chemical reactor apparatus
US20140119154 *Oct 26, 2012May 1, 2014Kasey KershawShakeable container with agitator
USD668113 *Oct 1, 2011Oct 2, 2012Abbott LaboratoriesStirrer
USD668544Oct 1, 2011Oct 9, 2012Abbott LaboratoriesClamp for a liquid container
USD668767Oct 1, 2011Oct 9, 2012Abbott LaboratoriesNipple
USD673040Oct 1, 2011Dec 25, 2012Abbott LaboratoriesPortion of a powder cap for a liquid container
USD681835Oct 1, 2011May 7, 2013Abbott LaboratoriesContainer assembly
USD681836Oct 1, 2011May 7, 2013Abbott LaboratoriesContainer assembly
USD682701Oct 1, 2011May 21, 2013Abbott LaboratoriesContainer for liquids
USD682702Oct 1, 2011May 21, 2013Abbott LaboratoriesContainer for liquids
EP0475170A1 *Aug 24, 1991Mar 18, 1992Tecumseh Products CompanyAir-cooled engine flywheel fan rotational debris inlet screen
Classifications
U.S. Classification366/247, 277/420, 366/325.92, 366/317, 366/304
International ClassificationA47J43/07, B01F15/00
Cooperative ClassificationB01F2015/00097, A47J43/07
European ClassificationA47J43/07