Patent US3752437A successfully refreshed from Google Patents.
US3752437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mold capable of being opened and closed
Assignee: Dana Inc
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Filing: 1971-12-02
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Granted: 1973-08-14
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Expires: 1991-12-02
Abstract
Abstract A mold which is capable of being closed to form a peripherally enclosed cavity within the mold and is formed from a lower wall, a pair of side walls hinged to pivot with respect to the lower wall and a top wall hinged to pivot relative to one of the side walls. Because of the pivotal movement, the top and side walls, upon pivoting to an open position, move in a peeling manner with respect to an object formed therein, while the supporting means for the lower wall move the latter away from the formed object in a peeling manner.
Inventors
- 👤 G Saidla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:01
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/58; B29C33/00; B29C33/10; B29C33/20; B29C33/30; B29C33/34
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
148 words
A mold comprising, a bottom wall, a pair of side walls and a top wall, support means for supporting said bottom wall and for moving said bottom wall in a vertically downward direction in a differential and peeling manner relative to an article formed within the mold, first hinge means for mounting said side walls relative to said bottom wall and for enabling the side walls to pivot outwardly to an open position in a peeling manner relative to an article formed within the mold and to pivot to a vertical closed position, and second hinge means pivotally mounting said top wall to one of said side walls for enabling said top wall to pivot upwardly to an open position in a peeling manner relative to an article formed in the mold and, when said one side wall is disposed vertically, to pivot to a close horizontal position.
Claim 2
Dependent Claim
148 words
A mold comprising, a bottom wall, a pair of side walls and a top wall, support means for supporting said bottom wall and for moving said bottom wall in a vertically downward direction in a differential and peeling manner relative to an article formed within the mold, first hinge means for mounting said side walls relative to said bottom wall and for enabling the side walls to pivot outwardly to an open position in a peeling manner relative to an article formed within the mold and to pivot to a vertical closed position, and second hinge means pivotally mounting said top wall to one of said side walls for enabling said top wall to pivot upwardly to an open position in a peeling manner relative to an article formed in the mold and, when said one side wall is disposed vertically, to pivot to a close horizontal position.
Claim 3
Dependent Claim
19 words
A mold according to claim 1 wherein said first hinge means connect said side walls to said bottom walls.
Claim 4
Dependent Claim
19 words
A mold according to claim 1 wherein said first hinge means connect said side walls to said Support means.
Claim 5
Dependent Claim
58 words
A mold according to claim 1 wherein said supporting means includes a plurality of vertically movable supports and actuating means for said supports, said actuating means being operable to move some of said vertically movable supports downwardly in advance of the other of said vertically movable supports whereby said bottom wall is moved downwardly in a peeling manner.
Claim 6
Dependent Claim
19 words
A mold according to claim 4 wherein said first hinge means connect said side walls to said bottom walls.
Claim 7
Dependent Claim
32 words
A mold according to claim 4 wherein said support means includes a support member supporting said vertically movable supports, and said first hinge means connect said side walls to said support members.
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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |