US3743466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the production of hollow bodies of thermoplastic materials in a blowing process
Assignee: Rheinmetall Industrie AG
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Filing: 1971-04-23
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Granted: 1973-07-03
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Expires: 1991-04-23
Abstract
Abstract An apparatus for the production of hollow bodies of thermoplastic synthetic material in a blowing process with two blow-molds swingable between a spray head of an extruder and a blowing station, which comprises means for alternatingly receiving extruded raw hoses in the blow-mold with its closing blow-mold halves and for feeding the raw hoses to a blow station. A U-shaped swinging frame is provided which has legs and closing plates. The U-shaped swinging frame has a box-shaped connecting part and a flyingly mounted axle is also provided. The U-shaped swinging frame is suspended on the axle. A carrying frame secures the axle and the axle is disposed such that the vertical symmetrical plane of at least one of the spray heads is arranged in the crossing point of arcs of a circle defined by both blow molds.
Inventors
- 👤 E Gampe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:08
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/28; B29C49/30; B29C49/32; B29C49/02; B29C49/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
187 words
An apparatus for the production of hollow bodies of thermoplastic synthetic material in a blowing process with two blow-molds swingable between a spray head of an extruder, and a blowing station, comprising means for alternatingly receiving extruded raw hoses in said blow-molds with their closing blow mold-halves and for feeding said raw hoses to a blow station, two U-shaped swinging frames having legs, closing plates, blow-mold halves of each of said blow-molds being disposed at the ends of said legs of one of said U-shaped swinging frames by means of said closing plates, each of said U-shaped swinging frames having a box-shaped connecting part, a flyingly mounted axle for each of said swinging frames, said U-shaped swinging frames being suspended on said axles, respectively, carrying frames securing said axles, and said axles being disposed such that the vertical symmetry plane of at least one of said spray heads is arranged in the crossing point of arcs of a circle defined by both of said blow-molds, means mounted on each of said swinging frames for maintaining the associated blow-mold in parallel orientation to itself in all swinging positions.
Claim 2
Independent Claim
187 words
An apparatus for the production of hollow bodies of thermoplastic synthetic material in a blowing process with two blow-molds swingable between a spray head of an extruder, and a blowing station, comprising means for alternatingly receiving extruded raw hoses in said blow-molds with their closing blow mold-halves and for feeding said raw hoses to a blow station, two U-shaped swinging frames having legs, closing plates, blow-mold halves of each of said blow-molds being disposed at the ends of said legs of one of said U-shaped swinging frames by means of said closing plates, each of said U-shaped swinging frames having a box-shaped connecting part, a flyingly mounted axle for each of said swinging frames, said U-shaped swinging frames being suspended on said axles, respectively, carrying frames securing said axles, and said axles being disposed such that the vertical symmetry plane of at least one of said spray heads is arranged in the crossing point of arcs of a circle defined by both of said blow-molds, means mounted on each of said swinging frames for maintaining the associated blow-mold in parallel orientation to itself in all swinging positions.
Claim 3
Dependent Claim
37 words
The apparatus, as set forth in claim 1, wherein said axles of said swinging frame disposed on both sides of said spray head and the position obtainable by both said blow-molds are arranged in a horizontal plane.
Claim 4
Dependent Claim
48 words
The apparatus, as set forth in claim 1, wherein said axles of said swinging frame disposed on both sides of said spray head are arranged in a plane, and the position obtainable by both of said blow-molds is arranged above and below, respectively, said plane of said axles.
Claim 5
Dependent Claim
26 words
The apparatus, as set forth in claim 1, which includes a hydraulic cylinder performing the movement of said swinging frame and disposed adjacent said carrying frame.
Claim 6
Dependent Claim
170 words
The apparatus, as set forth in claim 4, which includes a guide rod immovably disposed relative to and above said swinging frame and pivotally connected to said carrying frame at a point spaced from said axles, a control joint bar operatively pivotally connected to the other end of said guide rod and said end of said swinging frame, said guide rod affecting said closing plate by said control joint bar, and said guide rod parallel to an imaginary straight line in said leg of said swinging frame connecting said axle of said swinging frame and the common pivot axis of said control joint bar and said end of said swinging frame, and said guide rod, said control joint bar, said straight line in said leg of said frame jointly with a straight line connecting said axle of said swinging frame with the immovable pivotal connection of said guide rod with said carrying frame forming a parallelogram for the straight guidance of said blow-molds during the swinging of said swinging frame.
Claim 7
Dependent Claim
35 words
The apparatus, as set forth in claim 5, which includes a base plate supporting both said carrying frames, and including means for setting both said carrying frames relative to each other and to said extruder.
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |