Periscope at the hatchway of a combat vehicle

Details Periscope at the hatchway of a combat vehicle Periscope at the hatchway of a combat vehicle

1993-01-04

1994-05-31

Johnson, Stephen M.

Ordnance

Shields

Turret type

89 3608, 359402, 359513, F41H 522, F41H 526

Patent

active

053159152

ABSTRACT:
A periscope at the hatchway of a combat vehicle. The hatchway is closed by a hatch that comprises two components. One component is above the other at least when the hatchway is closed. The upper component is positioned over the upper edge of the hatchway and moves parallel to the plane that the hatch slides back and forth in. The lower component moves perpendicular to that plane. The periscope comprises two sections. The lower section is fastened to the vehicle and extends into its interior. The upper section extends through and slides back and forth along with the upper hatch component. The upper and lower periscope sections remain in optical alignment and contact as long as the upper hatch component is in its hatchway-closing position. A dirt-removal brush is secured to at least an area of the lower surface of the upper hatch component that, as long as that hatch component keeps the hatchway closed, is directly upstream of the periscope in the direction the component slides in when it opens the hatchway. The brush's bristles extend down to the roof of the vehicle perpendicular to the component's hatchway-opening direction at least along the circumference of the lower periscope section at the vehicle's roof.

REFERENCES:
patent: 2130006 (1938-09-01), Gundlach
patent: 2454268 (1948-11-01), Brackett
patent: 3559527 (1971-02-01), Schallehn
patent: 3724323 (1973-04-01), Selle

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