US3604053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shape-forming devices
Assignee: USM Corp
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Filing: 1969-04-03
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Granted: 1971-09-14
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Expires: 1989-04-03
Abstract
Abstract A machine for the manufacture of relatively thin sheetlike forms from a plastic material. A pair of belts is passed between a pair of mold members while having a charge of plastic material located between the belts to produce a desired form. The molds are brought together with the material and the belts located therebetween, at least one of the belts being employed to carry the material to, and away from, the mold members.
Inventors
- 👤 John C Zemlin
- 👤 Charles O Kilham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:19
CPC Classifications
B; B29; B29C; B29C43/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
123 words
A device for the manufacture of three dimensional shapes from a plastic material comprising, a pair of opposed forming members cooperatively disposed in spaced relation, heating means associated with at least one of said members, a pair of movable, parallel-spaced belts for supporting and transferring component material to and from an operating position between said forming members, a reach of said parallel-spaced belts being arranged for movement between said pair of forming members, means for depositing a quantity of component material on said reach at a locality spaced laterally from said forming members, and means for relatively moving said forming members to clamp said parallel-spaced belts and the deposited component material therebetween at said operating position to produce an element of desired shape.
Claim 2
Independent Claim
123 words
A device for the manufacture of three dimensional shapes from a plastic material comprising, a pair of opposed forming members cooperatively disposed in spaced relation, heating means associated with at least one of said members, a pair of movable, parallel-spaced belts for supporting and transferring component material to and from an operating position between said forming members, a reach of said parallel-spaced belts being arranged for movement between said pair of forming members, means for depositing a quantity of component material on said reach at a locality spaced laterally from said forming members, and means for relatively moving said forming members to clamp said parallel-spaced belts and the deposited component material therebetween at said operating position to produce an element of desired shape.
Claim 3
Dependent Claim
17 words
A device as set forth in claim 1 wherein each of said belts comprises an endless belt.
Claim 4
Dependent Claim
32 words
A device as set forth in claim 1 wherein at least one of said forming members comprises a female die member and further including heating means operatively connected with said die member.
Claim 5
Dependent Claim
19 words
A device as set forth in claim 3 wherein said belt is of a relatively nonstick heat resistant material.
Claim 6
Dependent Claim
42 words
A device as set forth in claim 1 which further includes means for cooling said belt spaced along the length of said belt and having said forming members located along the length of said belt between said depositing and said cooling means.
Claim 7
Independent Claim
122 words
A device for the manufacture of three-dimensional shapes from a plastic material comprising, a pair of opposed forming members cooperatively disposed in spaced relation, heating means associated with at least one of said members, a pair of movable , parallel-spaced belts for supporting therebetween, and transferring, component material during the manufacture process, a reach of said parallel-spaced belts being arranged for movement between said pair of forming members, means for depositing a quantity of component material on a surface of one of said belts facing the other of said belts prior to their entry between said forming members, and means for cooling said material while disposed between said belts located on the opposite side of said forming members from said depositing means.
Claim 8
Independent Claim
122 words
A device for the manufacture of three-dimensional shapes from a plastic material comprising, a pair of opposed forming members cooperatively disposed in spaced relation, heating means associated with at least one of said members, a pair of movable , parallel-spaced belts for supporting therebetween, and transferring, component material during the manufacture process, a reach of said parallel-spaced belts being arranged for movement between said pair of forming members, means for depositing a quantity of component material on a surface of one of said belts facing the other of said belts prior to their entry between said forming members, and means for cooling said material while disposed between said belts located on the opposite side of said forming members from said depositing means.
Claim 9
Dependent Claim
42 words
A device according to claim 6 which further includes means for causing intermittent synchronous movement of said belts whereby material deposited on said one belt is moved seriatim from the point of deposit, between said forming means, and to said cooling means.
Claim 10
Dependent Claim
38 words
A device according to claim 7 which further includes means to move at least one of said forming members relative to the other to clamp confronting portions of said belts and the material deposited thereon betWeen said members.
Claim 11
Dependent Claim
33 words
A device according to claim 8 wherein one of said forming members comprises a female die and the other of said member includes a pad of resilient material having a substantially planar surface.
Claim 12
Dependent Claim
22 words
A device according to claim 9 which further includes heating means operatively associated with said forming members to heat material disposed therebetween.
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) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |