Daniel W Crabtree

US Patent:

6610971, Aug 26, 2003

Filed:

May 7, 2002

Appl. No.:

10/139545

Inventors:

Daniel Crabtree - Ridgecrest CA

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

F41G 700

US Classification:

244 31, 244 311, 244 314, 244 315, 244 316, 244 321

Abstract:

The present invention provides a ship self-defense missile (SSDM) weapon system for launching a plurality of light weight missiles from an existing vertical tube launch infrastructure. The system for vertically launching missiles from a ship comprises a plurality of tiers having a top tier and a bottom tier in which tier supports a plurality of missiles. The tiers are set into a launch canister having an interior wall to form a vertical stack in the launch canister. A launch means is used for selectively launching at least one of the plurality of missiles from the top tier. A means for ejecting ejects the top tier is depleted of missiles. A vertical movement means raises and lowers the tiers within the launch tube and the vertical movement means raises next tier in the vertical stack into a position to launch. Preferably, the vertical movement means is a jack screw threaded though each tier in the vertical stack and the means for ejecting involves screwing a depleted tier off the jack screw and initiating explosives at the base of the depleted tier to allow the next tier access to a ready to fire position.

US Patent:

45517592, Nov 5, 1985

Filed:

Apr 13, 1983

Appl. No.:

6/484657

Inventors:

Daniel L. Crabtree - Ridgecrest CA

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

H04N 314

US Classification:

358213

Abstract:

A video amplifier for a raw video signal permits increasing the gain of the ignal so that it stands out from background noise prior to processing. The amplifier uses a sample and hold circuit between two gain stages to permit the raw video signal to only be sampled at a preset rate. This type of device is especially suitable for charge coupled device video where sampling is desired after a predetermined integration time for the pixel elements of a CCD array. This processing permits low voltage level signals to be amplified relatively isolated from background noise and then processed after being amplified to a level significantly above processing noise. The final gain stage permits amplifying suitable for standard video monitors to use the signal.