US3966165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite flexible mold
Assignee: Qo Chemicals Inc
•
Filing: 1974-12-04
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Granted: 1976-06-29
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Expires: 1994-12-04
Abstract
Abstract A flexible, distensible mold suitable for use in conjunction with a vacuum pot to shape art forms and utilitarian articles, such as foundry sand articles, is disclosed. The composite mold provides an integral, internal, flexible, stretchable shaping element thereof having shaping surfaces therein to confine and shape and hardenable or otherwise curable material being molded, and an outer second element which is a flexible, stretchable element distinct and separate from the first, the outer element being in direct and closely confining contact with the inner element, the outer element being in a condition of stress due to stretching.
Inventors
- 👤 Miroslav Psensky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:35
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/34; B28B7/348; B28B7/06; Y; Y10; Y10S; Y10S425/00; Y10S425/044
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
108 words
A composite flexible mold comprising an integral, inner, flexible, stretchable shaping element having a shaping cavity therein, for confining and shaping hardenable or otherwise curable material; and an outer second element which is a flexible, stretchable element distinct and separate from the first element, the outer element being in direct and closely confining contact with the inner element, the outer element being in a condition of stress due to stretching thereof and in which the outer element has a portion thereof having the configuration of a sleeve, and in which the outer element is stretched axially as well as circumferentially while in said direct and closely confining contact.
Claim 2
Dependent Claim
108 words
A composite flexible mold comprising an integral, inner, flexible, stretchable shaping element having a shaping cavity therein, for confining and shaping hardenable or otherwise curable material; and an outer second element which is a flexible, stretchable element distinct and separate from the first element, the outer element being in direct and closely confining contact with the inner element, the outer element being in a condition of stress due to stretching thereof and in which the outer element has a portion thereof having the configuration of a sleeve, and in which the outer element is stretched axially as well as circumferentially while in said direct and closely confining contact.
Claim 3
Dependent Claim
80 words
A composite flexible mold comprising: an integral, inner, flexible, stretchable shaping element having a shaping cavity therein, for confining and shaping hardenable or otherwise curable material; and an outer second element which is a flexible, stretchable element distinct and separate from the first element, the outer element being in direct and closely confining contact with the inner element, the outer element being in a condition of stress due to stretching thereof, and in which said outer element is cup shaped.
Claim 4
Dependent Claim
80 words
A composite flexible mold comprising: an integral, inner, flexible, stretchable shaping element having a shaping cavity therein, for confining and shaping hardenable or otherwise curable material; and an outer second element which is a flexible, stretchable element distinct and separate from the first element, the outer element being in direct and closely confining contact with the inner element, the outer element being in a condition of stress due to stretching thereof, and in which said outer element is cup shaped.
Claim 5
Dependent Claim
109 words
A composite, flexible mold comprising: an integral, internal, element having a shaping cavity therein; and an outer second element; said first and second elements being flexible and stretchable; said outer element being separate and distinct from the first element and being in direct and closely confining contact with said inner element; said outer element being in a condition of stress due to stretching of the outer element; said inner element including a radially extending top flange portion and a body portion dependent therefrom; said second outer element residing around at least a portion of said body portion, and wherein the outer element is stretched axially as well as circumferentially.
Claim 6
Dependent Claim
109 words
A composite, flexible mold comprising: an integral, internal, element having a shaping cavity therein; and an outer second element; said first and second elements being flexible and stretchable; said outer element being separate and distinct from the first element and being in direct and closely confining contact with said inner element; said outer element being in a condition of stress due to stretching of the outer element; said inner element including a radially extending top flange portion and a body portion dependent therefrom; said second outer element residing around at least a portion of said body portion, and wherein the outer element is stretched axially as well as circumferentially.
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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) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |