Patent JPS6423731A successfully refreshed from Google Patents.
US3868087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mold for forming dispensing containers
Assignee: CADDY CORP OF AMERICA
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Filing: 1973-05-07
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Granted: 1975-02-25
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Expires: 1993-05-07
Abstract
Abstract A mold for use in forming a one-piece thermoplastic container for a stack of objects in a rotational molding process is formed from a hollow tubular mold member having opposed opened and closed end portions conforming generally to the configuration of the containers to be formed. The mold has a laterally extending flange located adjacent its opened end portions with a plurality of projections formed thereon extending away from the opened end portion and parallel to the longitudinal axis of the mold. These projections are hollow and open at their inner end, through the flange, thereby to form mold sections which are used to form projections on the container being formed with the mold in the rotational molding process.
Inventors
- 👤 Henry Rothschild
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:14
CPC Classifications
B; B65; B65D; B65D1/00; B65D1/40; B29; B29C; B29C41/00; B29C41/02; B29C41/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
121 words
A mold for use in a rotational molding process comprising a hollow tubular mold member having first and second longitudinally spaced end portions, said first end portion of the mold member being closed and said second end portion being open and including a peripheral flange extending outwardly from said tubular member, said flange having a plurality of independent peripherally spaced hollow proJections extending outwardly therefrom and away from said open end along lines extending generally parallel to the longitudinal axis of said tubular member; said hollow projections being open to the atmosphere through said flange on the side thereof opposite the projections whereby the interior of said projections open towards the closed end of said tubular member on the outside thereof.
Claim 2
Dependent Claim
121 words
A mold for use in a rotational molding process comprising a hollow tubular mold member having first and second longitudinally spaced end portions, said first end portion of the mold member being closed and said second end portion being open and including a peripheral flange extending outwardly from said tubular member, said flange having a plurality of independent peripherally spaced hollow proJections extending outwardly therefrom and away from said open end along lines extending generally parallel to the longitudinal axis of said tubular member; said hollow projections being open to the atmosphere through said flange on the side thereof opposite the projections whereby the interior of said projections open towards the closed end of said tubular member on the outside thereof.
Claim 3
Dependent Claim
38 words
The mold as defined in claim 1 wherein said flange includes a peripheral collar located radially outwardly of said projections, said collar extending generally perpendicularly to the flange and away from said open end of said tubular member.
Claim 4
Dependent Claim
33 words
The mold as defined in claim 2 including a cover for said mold, said cover having a peripheral edge portion for receiving said collar thereby to cover the open end of said mold.
Claim 5
Dependent Claim
17 words
The device as defined in claim 2 wherein said tubular member has a generally elongated cylindrical configuration.
Claim 6
Dependent Claim
25 words
The device as defined in claim 4 wherein said projections are tapered from a base on said flange to a narrow free end portion thereof.
Claim 7
Dependent Claim
36 words
The mold as defined in claim 3 including means on said cover and on the outer surface of said closed end for mounting said mold in an apparatus for rotationally molding an object in the mold.
Claim 8
Dependent Claim
18 words
The mold as defined in claim 3 wherein said tubular member and said cover are formed of metal.
Claim 9
Dependent Claim
24 words
The mold as defined in claim 7 wherein said cover has an opening therein to permit visual inspection of the interior of the mold.
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) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |