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US3924989A Expired / Lapsed US ⏱️ 0.0 years remaining

Machine for producing moldings from chemical components which react quickly with one another

Assignee: Bayer AG
•
Filing: 1973-10-18
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Granted: 1975-12-09
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Expires: 1993-10-18
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Abstract

Abstract An apparatus for producing moldings from chemical components comprises a mold with an associated mixing chamber which communicates at its outlet and with the mold cavity, wherein this communication is supplied with a remixing system comprising an arrangement of channels provided with branches and junctions.

Inventors

  • 👤 Ferdinand Althausen
  • 👤 Heinrich Boden
  • 👤 Heinz Ersfeld
  • 👤 Lothar Klier
  • 👤 Reiner Raffel
  • 👤 Walter Schneider

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 13:21
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/0061; B29C33/0072; B29C44/00; B29C44/34; B29C44/3442; B29C67/00; B29C67/24; B29C67/246; Y; Y10; Y10S; Y10S264/00; Y10S264/83

Claims Analysis

Total Claims: 16
Claim 1
Independent Claim 209 words
An apparatus for producing moldings from chemical components which react quickly with one another, comprising a mold having an associated mixing chamber for reaction components which, at its outlet end, communicates with a cavity in said mold, means for introducing the said chemical components into the mixing chamber and a remixing system arranged between the mixing chamber and the mold cavity and adapted to homogenize the reaction mixture; said remixing system comprising a distributing channel with which a collecting channel is associated disposed in each half of the mold and leading from the mixing chamber portion in each half of the mold, and one or more mixing channels extending from each distributing channel to its associated collecting channel, the mixing channels of each mold half being so arranged that they cross over the mixing channels of the other mold half and being so constructed that the cross sections of the mixing channels of one mold half decrease from their distributing channel to their collecting channel while the cross-sections of the mixing channels of the opposite mold half increase from their distributing channel to their collecting channel; the assemblage being so constructed that the dividing plane dividing the mold into halves extends through the mixing chamber and the remixing system.
Claim 2
Independent Claim 209 words
An apparatus for producing moldings from chemical components which react quickly with one another, comprising a mold having an associated mixing chamber for reaction components which, at its outlet end, communicates with a cavity in said mold, means for introducing the said chemical components into the mixing chamber and a remixing system arranged between the mixing chamber and the mold cavity and adapted to homogenize the reaction mixture; said remixing system comprising a distributing channel with which a collecting channel is associated disposed in each half of the mold and leading from the mixing chamber portion in each half of the mold, and one or more mixing channels extending from each distributing channel to its associated collecting channel, the mixing channels of each mold half being so arranged that they cross over the mixing channels of the other mold half and being so constructed that the cross sections of the mixing channels of one mold half decrease from their distributing channel to their collecting channel while the cross-sections of the mixing channels of the opposite mold half increase from their distributing channel to their collecting channel; the assemblage being so constructed that the dividing plane dividing the mold into halves extends through the mixing chamber and the remixing system.
Claim 3
Dependent Claim 19 words
An apparatus as claimed in claim 1, wherein the remixing system is in the form of a replaceable insert.
Claim 4
Dependent Claim 27 words
An apparatus as claimed in claim 1, wherein the cross section of the mixing channels is changed by changing the depth and/or width of the mixing channels.
Claim 5
Independent Claim 183 words
An apparatus for producing moldings from chemical components which react quickly with one another, comprising a mold having an associated mixing chamber for reaction components which, at its outlet end, communicates with a cavity in said mold, means for introducing the said chemical components into the mixing chamber and a remixing system arranged between the mixing chamber and the mold cavity and adapted to homogenize the reaction mixture; said remixing system comprising a distributing channel with which a collecting channel is associated disposed in each half of the mold and leading from the mixing chamber portion in each half of the mold, and one or more mixing channels extending from each distributing channel to its associated collecting channel, the mixing channels of each mold half being so arranged that they cross over the mixing channels of the other mold half and being so constructed that while the mixing channels maintain constant cross-sections their depths and widths vary along their lengths; the assemblage being so constructed that the dividing plane dividing the mold into halves extends through the mixing chamber and the remixing system.
Claim 6
Independent Claim 183 words
An apparatus for producing moldings from chemical components which react quickly with one another, comprising a mold having an associated mixing chamber for reaction components which, at its outlet end, communicates with a cavity in said mold, means for introducing the said chemical components into the mixing chamber and a remixing system arranged between the mixing chamber and the mold cavity and adapted to homogenize the reaction mixture; said remixing system comprising a distributing channel with which a collecting channel is associated disposed in each half of the mold and leading from the mixing chamber portion in each half of the mold, and one or more mixing channels extending from each distributing channel to its associated collecting channel, the mixing channels of each mold half being so arranged that they cross over the mixing channels of the other mold half and being so constructed that while the mixing channels maintain constant cross-sections their depths and widths vary along their lengths; the assemblage being so constructed that the dividing plane dividing the mold into halves extends through the mixing chamber and the remixing system.
Claim 7
Dependent Claim 19 words
An apparatus as claimed in claim 4, wherein the remixing system is in the form of a replaceable insert.
Claim 8
Independent Claim 173 words
An apparatus for producing moldings from chemical components which react quickly with one another, comprising a mold having an associated mixing chamber for reaction components which, at its outlet end, communicates with a cavity in said mold, means for introducing the said chemical components into the mixing chamber and a remixing system arranged between the mixing chamber and the mold cavity and adapted to homogenize the reaction mixture; said remixing system comprising a distributing channel with which a collecting channel is associated disposed in each half of the mold, and more than one mixing channel extending from each distributing channel to its associated collecting channel, the mixing channels of each mold half being so arranged that they cross over the mixing channels of the other mold half and being so constructed that any one mixing channel has a lesser crosssection than that of either its associated distributing or collecting channel; the assembly being so constructed that the dividing plane dividing the mold into halves extends through the mixing chamber and the remixing system.
Claim 9
Independent Claim 173 words
An apparatus for producing moldings from chemical components which react quickly with one another, comprising a mold having an associated mixing chamber for reaction components which, at its outlet end, communicates with a cavity in said mold, means for introducing the said chemical components into the mixing chamber and a remixing system arranged between the mixing chamber and the mold cavity and adapted to homogenize the reaction mixture; said remixing system comprising a distributing channel with which a collecting channel is associated disposed in each half of the mold, and more than one mixing channel extending from each distributing channel to its associated collecting channel, the mixing channels of each mold half being so arranged that they cross over the mixing channels of the other mold half and being so constructed that any one mixing channel has a lesser crosssection than that of either its associated distributing or collecting channel; the assembly being so constructed that the dividing plane dividing the mold into halves extends through the mixing chamber and the remixing system.
Claim 10
Dependent Claim 19 words
An apparatus as claimed in claim 6, wherein the remixing system is in the form of a replaceable insert.
Claim 11
Independent Claim 171 words
An apparatus for producing moldings from chemical components which react quickly with one another comprising a mold having an associated mixing chamber for reaction components which, at its outlet end, communicates with a cavity in said mold, means for introducing the said chemical components into the mixing chamber and a remixing system arranged between the mixing chamber and the mold cavity and adapted to homogenize the reaction mixture; said remixing system comprising at least one distributing channel which has two approximately parallel branches which are each connected to a collecting channel by more than one mixing channel, each mixing channel having a cross-section less than the cross-section of its associated distributing channel branch and being so arranged that a stream of reactants issuing from its exit will impinge upon a stream from the exit of a mixing channel connecting the other distributing channel branch to the collecting channel; the assembly being so constructed that the dividing plane dividing the mold into halves extends through the mixing chamber and the remixing system.
Claim 12
Independent Claim 171 words
An apparatus for producing moldings from chemical components which react quickly with one another comprising a mold having an associated mixing chamber for reaction components which, at its outlet end, communicates with a cavity in said mold, means for introducing the said chemical components into the mixing chamber and a remixing system arranged between the mixing chamber and the mold cavity and adapted to homogenize the reaction mixture; said remixing system comprising at least one distributing channel which has two approximately parallel branches which are each connected to a collecting channel by more than one mixing channel, each mixing channel having a cross-section less than the cross-section of its associated distributing channel branch and being so arranged that a stream of reactants issuing from its exit will impinge upon a stream from the exit of a mixing channel connecting the other distributing channel branch to the collecting channel; the assembly being so constructed that the dividing plane dividing the mold into halves extends through the mixing chamber and the remixing system.
Claim 13
Dependent Claim 53 words
The apparatus of claim 8 wherein the mixing channels are at approximately right angles to the collecting channel and each mixing channel enters the collecting channel opposite the entrance of a mixing channel connecting the collecting channel with the branch of the distributing channel with which said first mixing channel is not associated.
Claim 14
Dependent Claim 40 words
The apparatus of claim 8, wherein the remixing apparatus comprises two successive distributing channels, each with its associated mixing and collecting channels arranged such that the collecting channel associated with the first distributing channel exits into the second distributing channel.
Claim 15
Dependent Claim 19 words
An apparatus as claimed in claim 8, wherein the remixing system is in the form of a replaceable insert.
Claim 16
Dependent Claim 33 words
An apparatus as claimed in claim 8, wherein the remixing system is arranged in one half of the mold and the other half of the mold forms a tangent to, and covers it.

References Cited (Backward Citations)

US829127A Cited
US832400A Cited
US3343215A Cited
US3605183A Cited
US3476521A Cited
US3459407A Cited
US3709640A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-12-08 1979-06-09 1979-12-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-12-08 1983-06-09 1983-12-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-12-08 1987-06-09 1987-12-09 $7700.00 Window Closed / Lapsed

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