Patent US3679337A successfully refreshed from Google Patents.
US3679337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of plastic articles
Assignee: Individual
•
Filing: 1970-04-16
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Granted: 1972-07-25
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Expires: 1990-04-16
Abstract
Abstract Apparatus for manufacturing hollow plastics articles using a centrifugal mould. A polymerizable mixture of accelerated and catalysed resins is introduced into the mould through two or more nozzels, the component resins of the mixture being fed through separate nozzels. The jets of resin issued from the nozzels are directed to a rotary disc mounted at the forward end of a reciprocating arm bearing the nozzels. The arm is movable into and out of the mould by means of a carriage. Various internal mould configurations may be provided for the production of articles of different section.
Inventors
- 👤 Claude Fuseller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:54
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/28; B29C70/30; B29C70/32; B29C70/323; B29C70/326; B29C31/00; B29C31/04; B29C41/00; B29C41/34; B29C41/36; B29C41/38; F; F16; F16L; F16L9/00; F16L9/006; F16L9/12; F16L9/127
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
29 words
Apparatus as claimed in claim 1, wherein said circuit means for each nozzle comprises an electrically operated distribution valve connected to a supply under pressure of said basis resins.
Claim 2
Dependent Claim
19 words
Apparatus as claimed in claim 2 wherein the supply under pressure is provided by pressure chambers contaIning the resins.
Claim 3
Dependent Claim
14 words
Apparatus as claimed in claim 2 wherein the pressure is provided by a pump.
Claim 4
Dependent Claim
15 words
Apparatus as claimed in claim 1 wherein the motor for driving the disc is pneumatic.
Claim 5
Dependent Claim
15 words
Apparatus as claimed in claim 1 wherein the motor for driving the disc is electric.
Claim 6
Dependent Claim
26 words
Apparatus as claimed in claim 1 wherein the connection between the rotating disc and its motor is ensured by a flexible member extending inside the arm.
Claim 7
Dependent Claim
35 words
Apparatus as claimed in claim 1 wherein microswitches are arranged along the roller track for the carriage, these micro-switches being tripped by the carriage in order to initiate automatically the successive stages of the method.
Claim 8
Dependent Claim
12 words
Apparatus according to claim 1 wherein the arm supports two spray nozzles.
Claim 9
Dependent Claim
12 words
Apparatus according to claim 1 wherein the arm supports four spray nozzles.
Claim 10
Dependent Claim
47 words
Apparatus according to claim 1 wherein the nozzles for spraying the accelerated resins are all located on the same side of the vertical diametral plane of the arm, whereas all the nozzles for spraying the catalysed resins are arranged on the other side of this vertical plane.
References Cited (Backward Citations)
US25587A
Cited
US3507011A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |