← Back to Patent Explorer
US3633507A Expired / Lapsed US ⏱️ 0.0 years remaining

Air-to-ground target-marking device

Assignee: United States Department of the Navy
•
Filing: 1970-03-19
•
Granted: 1972-01-11
•
Expires: 1990-03-19
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A delivery system for air-to-ground markings which comprises a bomblet-containing marking material and provided with a sensor which operates to trigger release of said marking material within a few inches of treetop or near ground surface.

Inventors

  • 👤 Carl H Morley
  • 👤 Howell M Sumrall

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 13:25
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/36; F42B12/46; F42B12/50; F42B10/00; F42B10/32; F42B10/48; F42B10/56; F42B12/42

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 285 words
An air-to-ground target marking device which comprises in combination a hollow cylinder; an ejection fuze assembly secured to one end of said cylinder and sealed therein by means of a weather cap; a sabot fitted along a portion of the inner wall of said cylinder upon which the base of said ejection fuze rests; a proximity fuze positioned within said sabot adjacent said ejection fuze; said sabot being friction fitted around said proximity fuze; said proximity fuze being provided with a bore rider on one side over which said sabot fits and an externally threaded hollow cup-shaped housing positioned in the center base of said fuze; said housing having mounted therein an electrical detonator connected to said fuze and a booster pellet positioned adjacent said detonator; a bomblet positioned adjacent said proximity fuze and secured at its forward end to said hollow cup-shaped housing; said bomblet comprising a container provided with externally scored walls and having a burster column extending centrally therethrough, a support post on the bottom of said container, and an oxyluminescent material substantially filling said container; said burster column comprising a metal tube substantially filled with high explosive pellets and adapted to be actuated by said detonator; a parachute attached by suitable means to said support post and filling the remainder of said cylinder; and an end cap closing said cylinder; said parachute being provided with a pull wire which is connected to said sabot whereby upon release of said parachute said pull wire operates to separate said sabot which falls free causing said bore rider to open which acts to initiate said burster pellets thereby creating sufficient gas pressure to cause rupture of said bomblet container thereby disseminating said oxyluminescent material.
Claim 2
Dependent Claim 285 words
An air-to-ground target marking device which comprises in combination a hollow cylinder; an ejection fuze assembly secured to one end of said cylinder and sealed therein by means of a weather cap; a sabot fitted along a portion of the inner wall of said cylinder upon which the base of said ejection fuze rests; a proximity fuze positioned within said sabot adjacent said ejection fuze; said sabot being friction fitted around said proximity fuze; said proximity fuze being provided with a bore rider on one side over which said sabot fits and an externally threaded hollow cup-shaped housing positioned in the center base of said fuze; said housing having mounted therein an electrical detonator connected to said fuze and a booster pellet positioned adjacent said detonator; a bomblet positioned adjacent said proximity fuze and secured at its forward end to said hollow cup-shaped housing; said bomblet comprising a container provided with externally scored walls and having a burster column extending centrally therethrough, a support post on the bottom of said container, and an oxyluminescent material substantially filling said container; said burster column comprising a metal tube substantially filled with high explosive pellets and adapted to be actuated by said detonator; a parachute attached by suitable means to said support post and filling the remainder of said cylinder; and an end cap closing said cylinder; said parachute being provided with a pull wire which is connected to said sabot whereby upon release of said parachute said pull wire operates to separate said sabot which falls free causing said bore rider to open which acts to initiate said burster pellets thereby creating sufficient gas pressure to cause rupture of said bomblet container thereby disseminating said oxyluminescent material.
Claim 3
Dependent Claim 19 words
The device in accordance with claim 1 wherein the oxyluminescent material consists essentially of polyethylene powder soaked with tetrakis(dimethylamino)ethylene.

References Cited (Backward Citations)

US1988446A Cited
US3207071A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-01-10 1975-07-12 1976-01-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-01-10 1979-07-12 1980-01-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-01-10 1983-07-12 1984-01-11 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag