US3847526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material mixing moulding apparatus for use with a mould to shape a plastics material
Assignee: Ankerwerk Nürnberg GmbH
•
Filing: 1972-03-10
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Granted: 1974-11-12
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Expires: 1992-03-10
Abstract
Abstract A moulding apparatus for use with a mould to shape a plastics material composed of a plurality of liquid components or constituents, the apparatus comprising a two part body having formed therein a mixing chamber for the constituents and an injection duct for directing the mixed constituents from the chamber to a mould cavity, the line of separation of the parts passing through the chamber and the injection duct; also provided is a movable closure member for closing the injection duct when the mould cavity is filled.
Inventors
- 👤 B Fries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:09
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/58; B29C44/581; B29C33/00; B29C33/0061; Y; Y10; Y10S; Y10S425/00; Y10S425/051
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
155 words
A plastics material transfer apparatus for use with a mould comprised of first and second mould sections defining a mould cavity for shaping a plastics material composed of a plurality of liquid constituents, said apparatus comprising: a body comprised of first and second body sections including means for mounting said first and second body sections on said first and second mould sections, respectively, of said mould whereby said respectively mounted sections separate and close during opening and closing of said mould, said body having formed therein a mixing chamber foR mixing said liquid constituents therein and an injection duct in fluid communication with said mould cavity for passing said mixed constituents from said mixing chamber to said mould cavity, said first and second body sections of said body being formed with the line of separation thereof passing through said mixing chamber and said injection duct; and a movable closure member for closing said injection duct.
Claim 2
Dependent Claim
155 words
A plastics material transfer apparatus for use with a mould comprised of first and second mould sections defining a mould cavity for shaping a plastics material composed of a plurality of liquid constituents, said apparatus comprising: a body comprised of first and second body sections including means for mounting said first and second body sections on said first and second mould sections, respectively, of said mould whereby said respectively mounted sections separate and close during opening and closing of said mould, said body having formed therein a mixing chamber foR mixing said liquid constituents therein and an injection duct in fluid communication with said mould cavity for passing said mixed constituents from said mixing chamber to said mould cavity, said first and second body sections of said body being formed with the line of separation thereof passing through said mixing chamber and said injection duct; and a movable closure member for closing said injection duct.
Claim 3
Dependent Claim
39 words
A plastics material transfer apparatus according to claim 1, wherein said closure member is slidable within said body and is formed with an end face which in the closed condition of the closure member is co-extensive with said body.
Claim 4
Dependent Claim
23 words
A plastics material transfer apparatus according to claim 1 and including a piston and cylinder unit for effecting movement of the closure member.
Claim 5
Dependent Claim
32 words
A plastics material transfer apparatus according to claim 1 wherein the body is provided with a plurality of feed ducts in communication with the mixing chamber to direct the liquid constituents thereto.
Claim 6
Dependent Claim
25 words
A plastics material transfer apparatus according to claim 4 and including nozzle blocks in communication with the feed ducts and opening into the mixing chamber.
Claim 7
Dependent Claim
23 words
A plastics material transfer apparatus according to claim 5, wherein the axes of the bores of the nozzle blocks include an angle therebetween.
Claim 8
Dependent Claim
24 words
A plastics material transfer apparatus according to claim 5 wherein the axes of the bores of the nozzle blocks lie in a common plane.
Claim 9
Dependent Claim
33 words
A plastics material transfer apparatus according to claim 5, wherein each nozzle block includes means for adjusting the effective cross-sectional area of the nozzle bore whereby to control the flow of liquid therethrough.
Claim 10
Dependent Claim
46 words
A plastics material transfer apparatus according to claim 8, wherein each said adjusting means includes a needle movable relatively to a valve seat surrounding the nozzle bore, and means for adjusting the distance of the needle from its seat in the open condition of the block.
Claim 11
Dependent Claim
31 words
A plastics material transfer apparatus according to claim 9, wherein the valve seat is of frusto-conical shape and wherein the end of the needle facing said seat is of frusto-conical shape.
Claim 12
Dependent Claim
49 words
A plastics material transfer apparatus according to claim 9 and including a rocker lever engageable with an intermediate thrust stud in turn engageable with the needle, and wherein power means are provided to rock the lever to cause the needle via the stud to move toward its valve seat.
References Cited (Backward Citations)
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US3375553A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |