US3871811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for applying heating and cooling media to mold plate
Assignee: EDWARD J CABIC
•
Filing: 1973-06-25
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Granted: 1975-03-18
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Expires: 1993-06-25
Abstract
Abstract A mold plate for applying heating and cooling fluids to a layer of plastic material comprising a chamber with spaced apart plates in which the first plate contacts the plastic and the heat transfer fluid flows through the chamber. Tubes extend between the plates. They serve a primary purpose to seal the mold plate holes so as to retain the heat transfer fluid internally within the mold plate system. These tubes serve a secondary purpose to supply additional cooling fluid to the plastic. Two mold plates may be positioned on each side of the plastic layer to form a molding press.
Inventors
- 👤 Martin J Barry
- 👤 Elon J Nobles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:41
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/06; B30B15/062; B30B15/064; B29; B29B; B29B13/00; B29B13/02; B29B13/023; B29C; B29C33/00; B29C33/02; B29C33/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
141 words
A mold plate adapted for applying heating and cooling fluids to a layer of plastic material to form a plastic panel comprising: a. a pair of spaced apart plates consisting of a first plate and a second plate wherein the first plate which engages the plastic material is made of a material having good heat transfer properties; b. wall means connecting the edges of said plates to form a fluid-tight chamber between said plates; c. inlet and outlet means within said walls to allow a heattransfer media to enter and exit from said chamber; and d. a plurality of open ended tubes extending between and into the two plates, said tubes being in a fluid-tight relation with said plates so that the media within said chamber cannot escape through said plates to provide additional fluid to the face of the mold.
Claim 2
Dependent Claim
141 words
A mold plate adapted for applying heating and cooling fluids to a layer of plastic material to form a plastic panel comprising: a. a pair of spaced apart plates consisting of a first plate and a second plate wherein the first plate which engages the plastic material is made of a material having good heat transfer properties; b. wall means connecting the edges of said plates to form a fluid-tight chamber between said plates; c. inlet and outlet means within said walls to allow a heattransfer media to enter and exit from said chamber; and d. a plurality of open ended tubes extending between and into the two plates, said tubes being in a fluid-tight relation with said plates so that the media within said chamber cannot escape through said plates to provide additional fluid to the face of the mold.
Claim 3
Dependent Claim
41 words
A mold plate system according to claim 1, wherein the tubes only extend partially into the first plate and wherein the holes into which the tubes extend in the first plate are chamfered on the outer side of the first plate.
Claim 4
Dependent Claim
36 words
A mold plate system according to claim 2, wherein cuts are arranged in the chamfered surface of said first plate whereby fluid flowing through said tubes may escape between said plate and the contigious plastic panel.
Claim 5
Dependent Claim
25 words
A mold plate system according to claim 1, wherein a layer of thermal insulation is positioned between said two plates and adjacent said second plate.
Claim 6
Dependent Claim
44 words
A mold plate system according to claim 1, further comprising chamber means positioned over the outer side of said second plate with a fluid inlet means therein whereby fluid can be applied into all of said plurality of tubes extending into said second plate.
Claim 7
Dependent Claim
29 words
A mold plate system according to claim 5, further comprising a fluid distributing means arranged externally to said fluid inlet means to distribute heat transfer media to said inlet.
Claim 8
Dependent Claim
23 words
A mold plate system according to claim 1, further comprising distributing means within said chamber to distribute the fluid across said first plate.
Claim 9
Dependent Claim
17 words
A mold plate system according to claim 7, wherein said distributing means is at least one baffle.
Claim 10
Dependent Claim
31 words
A mold plate system according to claim 1, further comprising fluid distributing means arranged externally to said inlet and outlet means to distribute heat transfer media to said inlets and outlets.
Claim 11
Dependent Claim
29 words
A molding device for forming plastic panels comprising a pair of spaced apart plate molds as defined in claim 1 and means to control the spacing of said molds.
References Cited (Backward Citations)
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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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |