Patent US4251253A successfully refreshed from Google Patents.
US4251253A
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Cooling system for molds
Assignee: Hermann Heye KG
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Filing: 1979-10-30
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Granted: 1981-02-17
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Expires: 1999-10-30
Abstract
Abstract A mold has a mold cavity centered on an axis and formed with a plurality of arrays of passages each lying at least approximately in a respective plane including the mold axis. Fluid is passed through these passages in order to cool the mold, and fluid may be passed more rapidly or under greater pressure or under lower temperature through some of the passages than through others in order to increase the cooling effect. Similarly inserts may partially insulate some of the passages for cooling some parts of the mold more or less than others. A plurality of temperature sensors each connected to a respective control valve may serve to control the fluid flow through each of the passages or sets of passages for continuous cooling control.
Inventors
- 👤 Kurt Becker
- 👤 Lothar Schaar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:14
CPC Classifications
C; C03; C03B; C03B9/00; C03B9/30; C03B9/38; C03B9/3866; C03B11/00; C03B11/12; C03B11/125; C03B11/127; C03B9/3816; C03B9/3825; C03B9/3875; Y; Y02; Y02P; Y02P40/00; Y02P40/50; Y02P40/57
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
123 words
A mold arrangement for molding thermoplastic materials, comprising an elongated mold including a wall which defines an elongated mold cavity having a longitudinal axis; a plurality of cooling passages each extending lengthwise of said longitudinal axis and each being located over its entire length in various positions in said wall and intersecting a plane extending perpendicular to said longitudinal axis; at least two supply means each feeding at least one stream of cooling fluid through at least one of two different ones of said cooling passages to effect heat exchange between said wall and said cooling fluid; and means for regulating the degree of heat exchange between said wall and the stream of cooling fluid in at least one of said two passages.
Claim 2
Dependent Claim
123 words
A mold arrangement for molding thermoplastic materials, comprising an elongated mold including a wall which defines an elongated mold cavity having a longitudinal axis; a plurality of cooling passages each extending lengthwise of said longitudinal axis and each being located over its entire length in various positions in said wall and intersecting a plane extending perpendicular to said longitudinal axis; at least two supply means each feeding at least one stream of cooling fluid through at least one of two different ones of said cooling passages to effect heat exchange between said wall and said cooling fluid; and means for regulating the degree of heat exchange between said wall and the stream of cooling fluid in at least one of said two passages.
Claim 3
Dependent Claim
15 words
The arrangement as defined in claim 1, comprising two concentric annuli of said cooling passages.
Claim 4
Dependent Claim
22 words
The arrangement as defined in claim 1, wherein said regulating means comprises a removable tubular insert in said at least one passage.
Claim 5
Dependent Claim
23 words
The arrangement as defined in claim 1, wherein said regulating means comprises a plurality of tubular inserts in respective ones of said passages.
Claim 6
Dependent Claim
17 words
The arrangement as defined in claim 4, where different ones of said tubular inserts have different lengths.
Claim 7
Dependent Claim
28 words
The arrangement as defined in claim 1, wherein said regulating means comprises means for varying the rate of flow of cooling fluid through said at least one passage.
Claim 8
Dependent Claim
32 words
The arrangement as defined in claim 2, said supply means comprising a pair of concentric feed conduits which each communicate with the passages of one of said two annuli of cooling passages.
Claim 9
Dependent Claim
85 words
The arrangement as defined in claim 1, wherein said mold has a plurality of parts which are separable from one another and at least two of which have respective surfaces which engage one another at an interface, at least some of said passages being formed in one of said two parts and having open ends in the surface of said one part and which are closed by the surface of the other of said two parts when said surfaces engage one another at said interface.
Claim 10
Dependent Claim
35 words
The arrangement as defined in claim 2, wherein said tubular insert is positioned to prevent fluid moving through the passage from contacting at least a portion of the wall of said at least one passage.
Claim 11
Dependent Claim
26 words
The arrangement as defined in claim 3, wherein said tubular insert has spaced ends and is formed between its ends with at least one lateral hole.
Claim 12
Dependent Claim
34 words
The arrangement as defined in claim 1, wherein said at least two supply means each comprise a connector secured to said mold and communicating the respective supply means with said at least one passage.
Claim 13
Dependent Claim
73 words
The arrangement as defined in claim 1, wherein said mold has two halves which are movable toward and away from one another, and wherein at least some of said passages have parts formed in one and parts formed in the other of said mold halves and positioned so that said parts in the respective halves communicate with one another when said mold halves are moved toward one another until they abut each other.
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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) | 1984-02-17 | 1984-08-18 | 1985-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-17 | 1988-08-18 | 1989-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-17 | 1992-08-18 | 1993-02-17 | $7700.00 | Window Closed / Lapsed |