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US3829264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding apparatus
Assignee: Holstein und Kappert Maschinenfabrik Phonix GmbH
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Filing: 1972-12-22
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Granted: 1974-08-13
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Expires: 1992-12-22
Abstract
Abstract A molding apparatus for thermoplastic material has a mold including two relatively movable mold sections. One or both of the mold sections are mounted on carriers for movement relative to the other, and adjusting means in form of springs or in form of superimposed fluid-tightly connected plates defining with one another a compartment which is extensible by pressure fluid, is interposed between at least one of the mold sections and its associated carrier so that the mold sections can be adjusted relative to one another and aligned in parallelism. A control arrangement, controlling operation of the mold, is associated with the latter.
Inventors
- 👤 R Mnilk
- 👤 M Kurreck
- 👤 U Geltenpoth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:33
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/26; B29C33/00; B29C33/20; B29C33/202; B29C49/00; B29C49/02; B29C49/04; B29C2033/205; B29C49/42; B29C49/48; B29C2049/4856; B29C2049/4862; B29C49/56; B29C2049/563; B29C2049/5633; B29C2049/5635
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
103 words
In a molding apparatus for thermoplastic material, in combination, mold means including two mold sections; mounting means mounting at least one of said mold sections for movement relative to the other between a mold-opening and a mold-closing portion; internally pressurizable adjusting means intermediate said mounting means and said one mold section for enabling adjustable parallel alignment of said mold sections; and sensing means for sensing when said mold sections are in said moldclosing position, including pressure-sensing means for sensing an increase in the level of internal pressure in said adjusting means which occurs in response to said mold sections reaching said moldclosing position.
Claim 2
Dependent Claim
103 words
In a molding apparatus for thermoplastic material, in combination, mold means including two mold sections; mounting means mounting at least one of said mold sections for movement relative to the other between a mold-opening and a mold-closing portion; internally pressurizable adjusting means intermediate said mounting means and said one mold section for enabling adjustable parallel alignment of said mold sections; and sensing means for sensing when said mold sections are in said moldclosing position, including pressure-sensing means for sensing an increase in the level of internal pressure in said adjusting means which occurs in response to said mold sections reaching said moldclosing position.
Claim 3
Dependent Claim
59 words
In a molding apparatus as defined in claim 1, said adjusting means comprising a pair of elastically distendable juxtaposed plates having respective circumferential margins in sealing engagement, said plates defining with one another a fluid-tight compartment surrounded by said margins, and pressure means for pressurizing said compartment with pressure fluid whereby to distend said plates to a controllable extend.
Claim 4
Dependent Claim
25 words
In a molding apparatus as defined in claim 2, said plates each having outwardly directed surfaces; and further comprising bolster means supportingly engaging said surfaces.
Claim 5
Dependent Claim
45 words
In a molding apparatus as defined in claim 1, said mounting means having angled projections; and further comprising a holding element carrying said one mold section and including substantially U-shaped angled portions each of which is in meshing engagement with one of said angled projections.
Claim 6
Dependent Claim
36 words
In a molding apparatus as defined in claim 4, said projections and meshing portions having respective juxtaposed faces; and further comprising replaceable distancing members interposed between said faces for maintaining them spaced at a predetermined distance.
Claim 7
Dependent Claim
37 words
In a molding apparatus as defined in claim 2; further comprising conduit means communicating with said compartment; and wherein said pressure-sensing means is interposed in said conduit means for sensing the level of pressure in said compartment.
Claim 8
Dependent Claim
54 words
In a molding apparatus as defined in claim 6, wherein said pressure-sensing means generates a signal in response to sensing of a predetermined level of pressure in said compartment; and further comprising supplying means for supplying said signal as a control signal to a forming device for forming thermoplastic material in said mold means.
Claim 9
Dependent Claim
21 words
In a molding apparatus as defined in claim 6; further comprising a source of pressure fluid connected with said pressure means.
Claim 10
Dependent Claim
90 words
In a molding apparatus as defined in claim 8; further comprising additional mounting means and additional adjusting means corresponding to the first-mentioned mounting means and adjusting means but associated with the other of said mold sections; said pressure means comprising a pressure conduit communicating with said source and connecting the compartments of said adjusting means; a one-way valve interposed in said pressure conduit; and a connecting conduit connecting said compartments in parallel and with said conduit means, said pressure conduit communicating with said connecting conduit downstream of said one-way valve.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |