Patent US3647341A successfully refreshed from Google Patents.
US3647341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mold synchronizing apparatus
Assignee: Individual
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Filing: 1969-03-05
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Granted: 1972-03-07
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Expires: 1989-03-05
Abstract
Abstract The present invention relates to an apparatus for the production of hollow articles from thermoplastic synthetic plastic materials by the blowing method employing a two part mold which is opened and closed in the cyclic operation of the apparatus and which in turn is blown up in the mold to form the finished hollow article, and wherein the mold halves are coupled for synchronous movement with respect to one another.
Inventors
- 👤 Stefan Fischer
- 👤 Rainer Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:09
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/56; B29C49/5605; B29C49/5606
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
243 words
A molding device having mold halves adapted to synchronously open and close, said device comprising first and second holding plates having said mold halves secured thereto and having rack means extending therefrom, at least one actuating means connected to either said first or second mold holding plates, first and second rotational coupling means cooperatively associated with said rack means extending from said first and second mold holding plates, and said first and second coupling means cooperatively associated with a rigid translational connecting means interconnecting said first and second coupling means whereby the opening and closing movement of said mold holding plates with respect to one another is synchronized, said first and second rotational coupling means each comprising a shaft, and first and second pinions, said first pinions being operatively connected between said shafts and said racks, said connecting means comprising a common rack, said second pinions being operatively connected between said shafts and said common rack, said actuation means being connected to one of said mold holding plates so as to impart a movement to said plate and to said other mold holding plate and to said first mentioned racks, said movement of said racks via said actuation means being transmitted through said pinions, said shafts and said common rack to the other of said first mentioned racks to cause corresponding movement of the other of said first mentioned racks in dependence upon the movement of said one of said first mentioned racks.
Claim 2
Dependent Claim
243 words
A molding device having mold halves adapted to synchronously open and close, said device comprising first and second holding plates having said mold halves secured thereto and having rack means extending therefrom, at least one actuating means connected to either said first or second mold holding plates, first and second rotational coupling means cooperatively associated with said rack means extending from said first and second mold holding plates, and said first and second coupling means cooperatively associated with a rigid translational connecting means interconnecting said first and second coupling means whereby the opening and closing movement of said mold holding plates with respect to one another is synchronized, said first and second rotational coupling means each comprising a shaft, and first and second pinions, said first pinions being operatively connected between said shafts and said racks, said connecting means comprising a common rack, said second pinions being operatively connected between said shafts and said common rack, said actuation means being connected to one of said mold holding plates so as to impart a movement to said plate and to said other mold holding plate and to said first mentioned racks, said movement of said racks via said actuation means being transmitted through said pinions, said shafts and said common rack to the other of said first mentioned racks to cause corresponding movement of the other of said first mentioned racks in dependence upon the movement of said one of said first mentioned racks.
Claim 3
Dependent Claim
44 words
A device in accordance with claim 1, wherein said shafts are disposed in fixed parallel alignment and are adapted for rotational movement About the center axes thereof in dependence upon the movement imparted thereto by means of the pinions which are fixedly secured thereto.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |