Patent DE335788C successfully refreshed from Google Patents.
US3989220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaker molding assembly
Assignee: Individual
•
Filing: 1975-12-01
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Granted: 1976-11-02
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Expires: 1995-12-01
Abstract
Abstract A shaker molding assembly. The assembly includes mold halves which are urged together as they are pushed into a holder. A measuring cup can be held against the mold halves to urge them into the holder. Ribs on the mold halves cooperate with a frusto-conic wall of the holder to urge the mold halves together. A mixture of water and a molding powder are shaken together in the assembly to form a smooth mixture. The molding powder includes an alkali metal alginate, calcium sulfate, tetrasodium pyrophosphate, and a filler. The mixture sets to form a jelly-like object which dries to form a rigid object of smaller size which is a substantially exact miniature of the jelly-like object.
Inventors
- 👤 Allen A. Greenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:01
CPC Classifications
B; B29; B29C; B29C39/00; C; C08; C08L; C08L5/00; C08L5/04; Y; Y10; Y10S; Y10S425/00; Y10S425/057; Y10S425/249
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
176 words
A shaker molding assembly which comprises a pair of mold halves, each of said mold halves including a mold cavity, a flat face extending outwardly from sides and one end of the mold cavity, and an end face plate having an end face extending outwardly from the other end of the mold cavity, the mold cavity being open at said other end, a mold holder having a frusto-conic wall receiving the mold halves, an outwardly extending wedge-shaped rib on each mold engaging the frusto-conic wall to drive the mold halves together with the flat faces thereof in flatwise engagement, an axially extending rib on each mold half on the outer edge of the end face thereof, and a measuring cup having an outwardly extending flange at a mouth thereof, there being slots on inner faces of the axially extending ribs receiving portions of the flange of the measuring cup, the measuring cup being sealed to the mold halves when the measuring cup and the holder are urged together and the contents of the assembly are shaken.
Claim 2
Dependent Claim
176 words
A shaker molding assembly which comprises a pair of mold halves, each of said mold halves including a mold cavity, a flat face extending outwardly from sides and one end of the mold cavity, and an end face plate having an end face extending outwardly from the other end of the mold cavity, the mold cavity being open at said other end, a mold holder having a frusto-conic wall receiving the mold halves, an outwardly extending wedge-shaped rib on each mold engaging the frusto-conic wall to drive the mold halves together with the flat faces thereof in flatwise engagement, an axially extending rib on each mold half on the outer edge of the end face thereof, and a measuring cup having an outwardly extending flange at a mouth thereof, there being slots on inner faces of the axially extending ribs receiving portions of the flange of the measuring cup, the measuring cup being sealed to the mold halves when the measuring cup and the holder are urged together and the contents of the assembly are shaken.
Claim 3
Dependent Claim
23 words
A shaker molding assembly as in claim 1 wherein the axially extending ribs form an annulus surrounding the flange of the measuring cup.
Claim 4
Dependent Claim
30 words
A shaker molding assembly as in claim 1 wherein outer edges of the flat faces of the mold halves are wedge-shaped and engage the frusto-conic wall of the mold holder.
Claim 5
Dependent Claim
31 words
A shaker molding assembly as in claim 1 wherein outer edges of the flat faces of the mold halves are provided with cooperating members for aligning the mold halves during assembly.
Claim 6
Dependent Claim
27 words
A shaker molding assembly as in claim 1 wherein the flat face, the end face plate, and the wedge-shaped rib of each mold half are mutually perpendicular.
References Cited (Backward Citations)
US3861640A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |