Patent US3565016A successfully refreshed from Google Patents.
US3565016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tablet-making machines
Assignee: Manesty Machines Ltd
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Filing: 1969-04-07
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Granted: 1971-02-23
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Expires: 1989-04-07
Abstract
Abstract In a tablet-making machine comprising a die table having one or more die holes extending therethrough, each such die hole accommodating a respective generally cylindrical die into which corresponding upper and lower punches enter to compress granular or pulverulent material to form it into a tablet, locking means, for the or each die, comprises a plug accommodated in a respective locking hole extending outwards from the die hole to the edge of the die table, the locking hole opening wholly into the die hole, and screw means engageable in the locking hole for urging the plug towards and into engagement with the die, that end of the plug which faces the die being concavely curved complementarily to the outer curved surface of the die and having a rib protruding therefrom for engagement in a circumferential groove around the die.
Inventors
- 👤 James William Christie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:18
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/02; B30B15/026; B30B11/00; B30B11/02; B30B11/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
132 words
A tablet-making machine comprising a die table having a die hole extending therethrough, the die hole accommodating a respective generally cylindrical die into which corresponding upper and lower punches enter to compress pulverulent material to form it into a tablet wherein locking means, for the die, comprises a plug accommodated in a respective locking hole extending outwards from the die hole to the edge of the die table, the locking hole opening wholly into the die hole, and screw means engageable in the locking hole for urging the plug towards and into engagement with the die, that end of the plug which faces the die being concavely curved complementarily to the outer curved surface of the die and having a rib protruding therefrom for engagement in a circumferential groove around the die.
Claim 2
Dependent Claim
132 words
A tablet-making machine comprising a die table having a die hole extending therethrough, the die hole accommodating a respective generally cylindrical die into which corresponding upper and lower punches enter to compress pulverulent material to form it into a tablet wherein locking means, for the die, comprises a plug accommodated in a respective locking hole extending outwards from the die hole to the edge of the die table, the locking hole opening wholly into the die hole, and screw means engageable in the locking hole for urging the plug towards and into engagement with the die, that end of the plug which faces the die being concavely curved complementarily to the outer curved surface of the die and having a rib protruding therefrom for engagement in a circumferential groove around the die.
Claim 3
Dependent Claim
32 words
A tablet-making machine as claimed in claim 1, wherein the machine is a rotary machine and the die table is circular, the locking hole being radially disposed relative to the die hole.
Claim 4
Dependent Claim
20 words
A tablet-making machine as claimed in claim 2, wherein the locking hole is radially disposed relative to the die table.
Claim 5
Dependent Claim
31 words
A tablet-making machine as claimed in claim 1, wherein the plug and the respective screw means are connected together in such a manner as to be rotatable relative to one another.
Claim 6
Dependent Claim
20 words
A tablet-making machine as claimed in claim 4 wherein the screw means is in the form of an Allen screw.
Claim 7
Dependent Claim
31 words
A tablet-making machine as claimed in claim 5 wherein a shank of the plug projects axially into the Allen screw and is formed to connect the plug to the Allen screw.
Claim 8
Dependent Claim
57 words
A tablet-making machine as claimed in claim 6 wherein the socket of the Allen screw joins with an axial hole through the screw by a frustoconical transition, the shank projecting through the hole and into the transition the frustoconical form of which serves to retain a circular spring clip in position in a groove around the shank.
Claim 9
Dependent Claim
39 words
A tablet-making machine as claimed in claim 1 wherein the locking hole and the rib on the plug are disposEd, relative to one another such as to urge the die into engagement with a shoulder in the die hole.
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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |