US4428295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High density shot
Assignee: Olin Corp
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Filing: 1982-05-03
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Granted: 1984-01-31
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Expires: 2002-05-03
Abstract
Abstract A high density shot made of a cold-compacted mixture of at least two metal powders, a first one of such powders more dense than lead and a second one of such being flowable under compaction to serve as a binder. The shot has an extended range as compared to conventional lead shot.
Inventors
- 👤 Venkataramaraj S. Urs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:24
CPC Classifications
F; F42; F42B; F42B7/00; F42B7/02; F42B7/04; F42B7/046; B; B22; B22F; B22F1/00; B22F1/09; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12181
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
44 words
High density shot which consists essentially of an unsintered cold-compacted mixture of at least two metal powders, a first one of such powders being more dense than lead and a second one of such powders being flowable under compaction to serve as a binder.
Claim 2
Dependent Claim
44 words
High density shot which consists essentially of an unsintered cold-compacted mixture of at least two metal powders, a first one of such powders being more dense than lead and a second one of such powders being flowable under compaction to serve as a binder.
Claim 3
Dependent Claim
11 words
The shot of claim 1 wherein said first powder is tungsten.
Claim 4
Dependent Claim
11 words
The shot of claim 1 wherein said second powder is lead.
Claim 5
Dependent Claim
49 words
The shot of claim 1 wherein the volume percentage of said second powder is within the range of from about 10 percent up to about 99 percent and a volume percentage of said first powder is within the range of from about 1 percent up to about 90 percent.
Claim 6
Dependent Claim
78 words
A process for making high density shot which comprises the steps of: (a) Mechanically mixing at least two metal powders, a first one such being more dense than lead and a second one of such powders being flowable under compaction to serve as a binder; (b) Compacting the resultant mixture in a spherical mold at pressures of at least 10,000 psi at temperatures below the melting point of the second powder thereby to form the high density shot.
Claim 7
Dependent Claim
78 words
A process for making high density shot which comprises the steps of: (a) Mechanically mixing at least two metal powders, a first one such being more dense than lead and a second one of such powders being flowable under compaction to serve as a binder; (b) Compacting the resultant mixture in a spherical mold at pressures of at least 10,000 psi at temperatures below the melting point of the second powder thereby to form the high density shot.
Claim 8
Dependent Claim
14 words
The process of claim 5 wherein the compaction pressure is at least 20,000 psi.
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) | 1987-01-30 | 1987-08-01 | 1988-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-30 | 1991-08-01 | 1992-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-30 | 1995-08-01 | 1996-01-31 | $7700.00 | Window Closed / Lapsed |