US3840232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frangible flying target
Assignee: Southwest Research Institute
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Filing: 1973-01-19
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Granted: 1974-10-08
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Expires: 1993-01-19
Abstract
Abstract A frangible flying target or clay pigeon molded from a composition comprising from about 35 percent to about 70 percent by weight of elemental sulphur mixed with about 30 percent to about 65 percent of an inert filler such as limestone dust. The composition is first heated to produce a fluid mix and is then cast or molded to produce a target of desired dimension and configuration. By the inclusion of materials that are dimensionally unstable in the presence of water, such as bentonite clay, it is possible to produce an environmentally degradable target.
Inventors
- 👤 A Ludwig
- 👤 J Dale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:15
CPC Classifications
F; F41; F41J; F41J1/00; F41J1/01
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
50 words
A FRANGIBLE FLYING TARGET CONSISTING OF 35 PERCENT TO 70 PERCENT BY WEIGHT OF AN ELEMENTAL SULFUR COMPOSITION AND FROM 65 PERCENT TO 30 PERCENT BY WEIGHT OF A FINELY DIVIDED INERT FILLER MATERIAL CONSISTING OF LIMESTONE DUST, SAID FRANGIBLE FLYING TARGET BEING SHATTERABLE UPON IMPACT BY A SINGLE PELLET.
Claim 2
Dependent Claim
50 words
A FRANGIBLE FLYING TARGET CONSISTING OF 35 PERCENT TO 70 PERCENT BY WEIGHT OF AN ELEMENTAL SULFUR COMPOSITION AND FROM 65 PERCENT TO 30 PERCENT BY WEIGHT OF A FINELY DIVIDED INERT FILLER MATERIAL CONSISTING OF LIMESTONE DUST, SAID FRANGIBLE FLYING TARGET BEING SHATTERABLE UPON IMPACT BY A SINGLE PELLET.
Claim 3
Dependent Claim
35 words
The frangible flying target of claim 1 wherein the finely divided inert filler material includes from 1 percent to 10 percent by weight of a material that is dimensionally unstable in the presence of water.
Claim 4
Dependent Claim
32 words
The frangible flying target of claim 2 wherein the inert filler material consists of limestone dust and from 1 percent to 10 percent by weight of the limestone dust of bentonite clay.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |