Patent US3593377A successfully refreshed from Google Patents.
US3593377A
Expired / Lapsed
US
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Container removal apparatus
Assignee: Dart Container Corp
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Filing: 1969-11-12
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Granted: 1971-07-20
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Expires: 1989-11-12
Abstract
Abstract In a continuous-motion container-molding machine including a plurality of continuously rotating male and female mold elements which form disposable plastic containers from a heated web of thermoplastic material, there is provided a hollow container ejector tube which is configured and designed relative to the female mold elements to permit the rapid entry of containers from the female mold elements and transfer of the containers to a collecting station.
Inventors
- 👤 Bryant Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:35
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/18; B29C51/20; B29C51/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
117 words
In a continuous-motion container-molding machine including a plurality of continuously rotating cooperating male and female mold elements which form disposable plastic containers from a heated web of thermoplastic material, the improvement comprising a hollow container ejector tube having a curvilinear lower end which is complementary to a predetermined arcuate portion of the machine containing at least one of the female mold elements, the curvilinear lower end being provided with a longitudinally extending opening which is positioned adjacent the female mold elements to facilitate entry of containers ejected from the female mold elements, and means establishing a vacuum within the hollow container ejector tube to assist in the lifting and propelling of the containers to a collecting station.
Claim 2
Dependent Claim
117 words
In a continuous-motion container-molding machine including a plurality of continuously rotating cooperating male and female mold elements which form disposable plastic containers from a heated web of thermoplastic material, the improvement comprising a hollow container ejector tube having a curvilinear lower end which is complementary to a predetermined arcuate portion of the machine containing at least one of the female mold elements, the curvilinear lower end being provided with a longitudinally extending opening which is positioned adjacent the female mold elements to facilitate entry of containers ejected from the female mold elements, and means establishing a vacuum within the hollow container ejector tube to assist in the lifting and propelling of the containers to a collecting station.
Claim 3
Dependent Claim
37 words
The apparatus as defined in claim 1 wherein said hollow container ejector tube extends upwardly away from the continuous-motion molding machine at a position which is approximately 310* offset from the top dead center of the machine.
Claim 4
Dependent Claim
19 words
The apparatus as defined in claim 1 wherein the longitudinally extending opening traverses at least two female mold elements.
Claim 5
Dependent Claim
50 words
The apparatus as defined in claim 1 wherein said hollow container ejector tube is cylindrical and said longituDinally extending opening intersects the hollow container ejector tube at an angle which permits the marginal portions surrounding the opening to extend substantially normal to the reciprocating movement of the female mold elements.
Claim 6
Dependent Claim
29 words
The apparatus as defined in claim 1 wherein marginal portions on opposite sides of the longitudinally extending opening gradually taper towards the upper end to an apically configured portion.
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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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |