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US4090836A Expired / Lapsed US ⏱️ 0.0 years remaining

Injection die casting apparatus, especially for making molded parts of thermoplast-structural foam

Assignee: Fried Krupp AG
•
Filing: 1977-04-04
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Granted: 1978-05-23
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Expires: 1997-04-04
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Abstract

Abstract An injection die casting apparatus, especially for making molded articles especially of thermoplast-structural foam, with at least two closing units arranged adjacent to each other and provided with molds and mold chucking plates, and also equipped with an injection unit comprising an extruder, a pertaining charging hopper, a deflecting head and a hydraulic accumulator. The upper surfaces of the closing units have centrally arranged therein injection openings, and the injection unit is pivotable about a vertical axis and tiltable about a horizontal axis.

Inventors

  • 👤 Walter von der Ohe
  • 👤 Hans-Jurgen Lange

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 19:19
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/03; B29C45/12; B29C45/07; B29C45/076; Y; Y10; Y10S; Y10S264/00; Y10S264/83

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 161 words
An injection die casting apparatus, especially for producing formed articles of thermoplast-structural foam, which includes: at least two closing units arranged adjacent to each other and respectively provided with mold chucking plates adapted to receive and support molds; an injection unit comprising an extruder with a charging hopper mounted thereon and a deflecting head connected thereto and a hydraulic accummulator operative therewith, said closing units having upper surfaces with centrally arranged injection openings respectively; supporting means arranged laterally of said at least two closing units, first bearing means supported by said supporting means and supporting said injection unit for rotation about a vertical axis, second bearing means associated with said first bearing means and supporting said injection unit for pivotal movement of the latter about a horizontal axis, and means operatively associated with said mold chucking plates for moving said mold chucking plates toward and away from each other in a vertical direction substantially parallel to said first mentioned vertical axis.
Claim 2
Dependent Claim 161 words
An injection die casting apparatus, especially for producing formed articles of thermoplast-structural foam, which includes: at least two closing units arranged adjacent to each other and respectively provided with mold chucking plates adapted to receive and support molds; an injection unit comprising an extruder with a charging hopper mounted thereon and a deflecting head connected thereto and a hydraulic accummulator operative therewith, said closing units having upper surfaces with centrally arranged injection openings respectively; supporting means arranged laterally of said at least two closing units, first bearing means supported by said supporting means and supporting said injection unit for rotation about a vertical axis, second bearing means associated with said first bearing means and supporting said injection unit for pivotal movement of the latter about a horizontal axis, and means operatively associated with said mold chucking plates for moving said mold chucking plates toward and away from each other in a vertical direction substantially parallel to said first mentioned vertical axis.
Claim 3
Dependent Claim 23 words
An apparatus according to claim 1, in which each of said closing units is provided with a maximum of two mold chucking plates.
Claim 4
Dependent Claim 37 words
An apparatus according to claim 1, which includes hydraulic connecting means rigidly interconnecting said hydraulic accumulator and said injection unit, and also includes a gas reservoir and flexible connecting means connecting said gas reservoir with said accumulator.
Claim 5
Dependent Claim 34 words
An apparatus according to claim 1, which includes rigid conduit means and in which said injection unit is hydraulically operable and is hydraulically connected to said accumulator by means of said rigid conduit means.

References Cited (Backward Citations)

US3205536A Cited
AT257916B Cited
FR1325875A Cited
US3335464A Cited
GB1110303A Cited
US4022561A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1981-05-22 1981-11-21 1982-05-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-05-22 1985-11-21 1986-05-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-05-22 1989-11-21 1990-05-23 $7700.00 Window Closed / Lapsed

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