US4384834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for compacting powder
Assignee: Institut Cerac SA
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Filing: 1981-02-05
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Granted: 1983-05-24
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Expires: 2001-02-05
Abstract
Abstract A compaction device for compacting powder in which a compaction chamber (16) is formed by a block (1) having a conical bore (9) and a conical sleeve (2) being movable in the bore to be compressed thereby. The taper of sleeve (2) is somewhat smaller than that of the bore (9). A combined shock absorber and extractor, for the compacted powder, which comprises a movable support (4) extending into the compaction chambers (16) and being provided with an enlarged head portion (13) having passages (14). An accumulator (42) is connected to a chamber (22) of the cylinder (11) in which support (4) is movable. The accumulator (42) improves the shock absorbing characteristics.
Inventors
- 👤 Michel Wichoud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:46
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/02; B30B11/04; B30B15/00; B30B15/02; B30B15/022; B29; B29C; B29C43/00; B29C43/32; B29C2043/3272; B29C2043/3283; B29C43/36; B29C43/361; B29C2043/3615; B29C2043/3618; B29C43/3642; B29C2043/3652; B29C33/00; B29C33/20
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
91 words
A device for compacting powder into a solid body, said device comprising a compaction chamber (16) for the powder (7), a movable support (4) extending into said compaction chamber to support the powder therein, and means (5) for launching a punch (58) against the powder to form said solid body, characterized in that said compaction chamber (16) is formed by a block (1) having a conical bore (9) defined therein, and a conical sleeve (2) having a continuous uncut sidewall being movable in said conical bore to be radially compressed thereby.
Claim 2
Independent Claim
91 words
A device for compacting powder into a solid body, said device comprising a compaction chamber (16) for the powder (7), a movable support (4) extending into said compaction chamber to support the powder therein, and means (5) for launching a punch (58) against the powder to form said solid body, characterized in that said compaction chamber (16) is formed by a block (1) having a conical bore (9) defined therein, and a conical sleeve (2) having a continuous uncut sidewall being movable in said conical bore to be radially compressed thereby.
Claim 3
Dependent Claim
28 words
A device according to claim 1, characterized thereby that said conical sleeve (2) has a taper which is somewhat smaller than the taper of said conical bore (9).
Claim 4
Independent Claim
154 words
A device for compacting powder into a solid body, said device comprising a compaction chamber (16) for the powder (7), a movable support (4) extending into said compaction chamber to support the powder therein, and means (5) for launching a punch (58) against the powder to form said solid body, characterized thereby that said movable support comprises a shaft portion (4) extending into the compaction chamber (16) and a head portion (13) having a larger cross-sectional area than the shaft portion, said head portion being movable in a cylinder (11) containing fluid, said head portion being provided with passages (14) to allow fluid to pass from one side of the head portion to the other, and that a piston (12) is movable in said cylinder along said shaft portion to form a seal therebetween, whereby said movable support is capable of performing both as a shock absorber and an extractor for the solid body.
Claim 5
Independent Claim
154 words
A device for compacting powder into a solid body, said device comprising a compaction chamber (16) for the powder (7), a movable support (4) extending into said compaction chamber to support the powder therein, and means (5) for launching a punch (58) against the powder to form said solid body, characterized thereby that said movable support comprises a shaft portion (4) extending into the compaction chamber (16) and a head portion (13) having a larger cross-sectional area than the shaft portion, said head portion being movable in a cylinder (11) containing fluid, said head portion being provided with passages (14) to allow fluid to pass from one side of the head portion to the other, and that a piston (12) is movable in said cylinder along said shaft portion to form a seal therebetween, whereby said movable support is capable of performing both as a shock absorber and an extractor for the solid body.
Claim 6
Dependent Claim
29 words
A device according to claim 3, characterized thereby that an accumulator (42) is connected to said cylinder (11) at the end being directed away from the compaction chamber (16).
Claim 7
Independent Claim
92 words
A device according to claims 1 or 3, characterized thereby that said means for launching a punch (58) comprises a barrel (5) extending between said compaction chamber (16) and a pressure gas container (55), and a valve body (61) being movable in the direction of the barrel to control fluid communication between said container and the barrel, said valve body being provided with a flange (64) which is movable in a control chamber (63,65), and an end portion (66) with reduced diameter for cooperation with an end surface (59) of the barrel.
References Cited (Backward Citations)
US2267508A
Cited
US2942298A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-23 | 1986-11-22 | 1987-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-23 | 1990-11-22 | 1991-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-23 | 1994-11-22 | 1995-05-24 | $7700.00 | Window Closed / Lapsed |