US3663147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary press-molding apparatus
Assignee: Shionogi and Co Ltd
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Filing: 1970-06-02
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Granted: 1972-05-16
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Expires: 1990-06-02
Abstract
Abstract A combination, provided in a conventional punch-and-die type rotary tableting machine, of auxiliary rollers attached to each of the punches or the sheathes thereof, and tracking rails capable of exerting pressure on said punches through said auxiliary rollers with sequential transferring of the punches, serves to cause auxiliary (preparatory and complementary) compacting of material to be molded or of already molded articles resulting in a tableting performance free of capping or lamination.
Inventors
- 👤 Hideyuki Maekawa
- 👤 Teruo Sakamoto
- 👤 Yoshihisa Sagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:37
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/02; B30B11/08; B30B15/00; B30B15/02; B30B15/026
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A punch-and-die type rotary compression molding apparatus which comprises; a stationary frame, a structure rotatably mounted around a vertical axis on said stationary frame and composed of upper and lower punch blocks and an interposed die block, each having a multiplicity of upper punch members, lower punch members and die cavities, respectively, around the circumference thereof, at least one pair of upper and lower compressing rollers, disposed one above and one below the rotatable structure, and mounted rotatably around axes which intersect said vertical axis, and capable of exerting pressures on said punch members, an auxiliary roller on each of the punch members, a plurality of divided semi-annular tracking rails installed, a plurality of abutments projecting outwardly from the stationary frame, and resilient means on said abutments and on which said tracking rails are mounted, said auxiliary rollers engaging said tracking rails for exerting a pressure on said punch members through said auxiliary rollers upon sequential movement of the punch members around the axis of the rotatable structure.
Claim 2
Dependent Claim
168 words
A punch-and-die type rotary compression molding apparatus which comprises; a stationary frame, a structure rotatably mounted around a vertical axis on said stationary frame and composed of upper and lower punch blocks and an interposed die block, each having a multiplicity of upper punch members, lower punch members and die cavities, respectively, around the circumference thereof, at least one pair of upper and lower compressing rollers, disposed one above and one below the rotatable structure, and mounted rotatably around axes which intersect said vertical axis, and capable of exerting pressures on said punch members, an auxiliary roller on each of the punch members, a plurality of divided semi-annular tracking rails installed, a plurality of abutments projecting outwardly from the stationary frame, and resilient means on said abutments and on which said tracking rails are mounted, said auxiliary rollers engaging said tracking rails for exerting a pressure on said punch members through said auxiliary rollers upon sequential movement of the punch members around the axis of the rotatable structure.
References Cited (Backward Citations)
US2973555A
Cited
US2944493A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |