Rack and pinion weapon elevation mechanism

Details Rack and pinion weapon elevation mechanism Rack and pinion weapon elevation mechanism

1982-09-27

1984-04-10

Kelly, Donald G.

Ordnance

Mounts

With body protecting devices

89 36K, 89 41H, F41F 2116, F41F 2104, F41F 2306, F41F 2310

Patent

active

044414013

ABSTRACT:
A three rack and double pinion weapon elevation mechanism is disclosed and is useful for positioning and balancing a weapon, such as a cannon, on a combat vehicle. Two hydraulically-actuated gear racks are in facing relation with a main pinion in meshing engagement therebetween. The main pinion is integral with a shaft to which an output pinion is attached. Rotation of the main pinion produces an identical rotation of the output pinion. The output pinion is in mesh with a sector gear attached to the weapon. The two racks are slidable past the main pinion causing it and the output pinion to rotate in one direction or the other, producing a corresponding elevation or depression of the weapon. A third hydraulically-actuated rack is meshed with the main pinion to exert an elevating torque on the output pinion counter to a depressing torque exerted thereon by the weight of the weapon and which varies with changes in weapon elevation angle. A hydraulic accumulator arrangement pressurizes the third rack against the main pinion as a function of weapon position to automatically counter the depressing torque exerted by the weapon, thereby balancing the weapon on the combat vehicle.

REFERENCES:
patent: 1428345 (1922-09-01), Standish
patent: 1493628 (1924-05-01), Hagenbucher
patent: 1612118 (1926-12-01), Hewlett et al.
patent: 2017083 (1935-10-01), Willink
patent: 2946262 (1960-07-01), Bruehl
patent: 3223000 (1965-12-01), Payne et al.
patent: 3636789 (1972-01-01), Geiger
patent: 4338853 (1982-07-01), Neumeyer
patent: 4353283 (1982-10-01), Crepin

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